A Mechanistic Insight into the Oxygen Redox of Li-Rich Layered Cathodes and their Related Electronic/Atomic Behaviors Upon Cycling

Article Chemistry, Multidisciplinary

Detection of trapped molecular O2 in a charged Li-rich cathode by Neutron PDF

Robert A. House et al.

Summary: By presenting neutron PDF data, it was demonstrated that the charged O-redox cathode material contains molecular O-2, which could potentially increase the energy density of Li-ion batteries.

ENERGY & ENVIRONMENTAL SCIENCE (2022)

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Review Nanoscience & Nanotechnology

Pushing the limit of 3d transition metal-based layered oxides that use both cation and anion redox for energy storage

Minghao Zhang et al.

Summary: This Review discusses the potential of layered oxide compounds with anion redox as positive electrode materials for next-generation Li-ion batteries. It outlines the mechanisms of anion redox and emphasizes the impact of structural changes on electrochemical performance. The importance of an integrated approach combining characterization and computation for studying the evolution of bulk structure and electrode-electrolyte interphase is highlighted.

NATURE REVIEWS MATERIALS (2022)

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Article Chemistry, Physical

Coupling structural evolution and oxygen-redox electrochemistry in layered transition metal oxides

Donggun Eum et al.

Summary: This study explores the close interplay between the local structural change and oxygen electrochemistry during short- and long-term battery operation for layered transition metal oxides (TMOs). The evolution of oxygen-redox activity and reversibility is found to be closely related to cation-migration mechanisms.

NATURE MATERIALS (2022)

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Article Chemistry, Physical

Retardation of Structure Densification by Increasing Covalency in Li-Rich Layered Oxide Positive Electrodes for Li-Ion Batteries

Aleksandra A. Savina et al.

Summary: Due to the excellent discharge capacity provided by oxygen redox activity, Li-rich layered oxide positive electrode materials have attracted great attention. However, there is still no consensus regarding the role of ionocovalency of transition metal-oxygen chemical bonding in the reversibility of oxygen redox and the local crystal and electronic structure transformations. In this study, we successfully manipulated the cationic/anionic redox contributions to the overall electrochemical activity and investigated the importance of enhancing the covalency of the TM-O bonding for anchoring the reversibility of the charge compensation mechanism.

CHEMISTRY OF MATERIALS (2022)

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Article Chemistry, Physical

Capturing dynamic ligand-to-metal charge transfer with a long-lived cationic intermediate for anionic redox

Biao Li et al.

Summary: This study reveals the activation mechanism of reversible anionic redox reactions in cation-disordered rock-salt Li1.17Ti0.58Ni0.25O2 and experimentally validates previous theoretical hypotheses. The findings also provide additional guidance for designing high-capacity electrodes.

NATURE MATERIALS (2022)

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Article Chemistry, Multidisciplinary

Ion-Migration Mechanism: An Overall Understanding of Anionic Redox Activity in Metal Oxide Cathodes of Li/Na-Ion Batteries

Yangyang Lai et al.

Summary: This study investigates the activation mechanism of the anionic redox reaction (ARR) in cathode materials for Li/Na-ion batteries by designing Mg/Li/Zn-substituted NaxMnO2 and LixMnO2 cathode materials. Experimental results and theoretical calculations reveal that the activation of ARR is only observed in Li-substituted LixMnO2, while all Mg/Li/Zn-substituted NaxMnO2 cathode materials show ARR activities. The study proposes an ion-migration mechanism to explain the different ARR behaviors between NaxMnO2 and LixMnO2, providing insights for the development of high-capacity metal oxide cathode materials for LIBs/SIBs.

ADVANCED MATERIALS (2022)

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Article Chemistry, Multidisciplinary

Fluorinated Rocksalt Cathode with Ultra-high Active Li Content for Lithium-ion Batteries

Yi Pei et al.

Summary: This study reports a new type of ultra-high Li compound, Li4+xMoO5Fx, for cathode materials in lithium-ion batteries. The cathode exhibits an unprecedented level of electrochemically active Li, delivering a reversible capacity of up to 438 mAh g(-1). The Li4+xMoO5Fx compound demonstrates outstanding structural stability and enables a facile and reversible cycling of high Li portion through a reductive effect.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2022)

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Article Chemistry, Multidisciplinary

Adaptive Cation Pillar Effects Achieving High Capacity in Li-Rich Layered Oxide, Li2MnO3-LiMeO2 (Me = Ni, Co, Mn)

Satoshi Hiroi et al.

Summary: Intensive research is being conducted to enhance the performance of lithium-ion batteries. Li-rich layered oxides (LLO) are attracting attention due to their higher capacity, which is attributed to the unique structural features resulting from cation mixing. Understanding these features will provide guidance for the design of next-generation lithium-ion battery positive electrodes.

SMALL (2022)

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Article Chemistry, Physical

π-type orbital hybridization and reactive oxygen quenching induced by Se-doping for Li-rich Mn-based oxide cathode

Jun Chen et al.

Summary: Electrochemically stable Li-rich Mn-based oxide cathode is successfully designed by manipulating molecular polarity within host structure through the introduction of Se, resulting in improved stability and reduced oxygen loss. This work provides a potential avenue for advanced electrodes in lithium-ion batteries.

ENERGY STORAGE MATERIALS (2022)

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Article Chemistry, Multidisciplinary

The Role of Ni and Co in Suppressing O-Loss in Li-Rich Layered Cathodes

Edouard Boivin et al.

Summary: It is shown that almost complete eradication of oxygen loss with Ni substitution is due to the presence of a less lithium-rich, more nickel-rich rocksalt shell at the surface of the particles compared with the bulk. Thinner rocksalt shell forms in the case of Ni and Co co-substitution, leading to more abundant oxygen loss. Co doping does not result in a surface shell yet it still suppresses oxygen loss, indicating that two mechanisms exist for oxygen loss suppression.

ADVANCED FUNCTIONAL MATERIALS (2021)

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Article Chemistry, Physical

Reversible and Irreversible Redox Processes in Li-Rich Layered Oxides

Michael Merz et al.

Summary: This study investigates the reversible and irreversible charge exchange reactions of Li- and Mn-rich layered oxides, and demonstrates the relationship between O-O formation in the bulk and reduction/oxidation processes of Ni, Co, and Mn. It also discusses the reversibility of charge compensation reactions and differences between O-O formation and oxygen release during activation.

CHEMISTRY OF MATERIALS (2021)

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Article Chemistry, Multidisciplinary

Delocalized Metal-Oxygen π-Redox Is the Origin of Anomalous Nonhysteretic Capacity in Li-Ion and Na-Ion Cathode Materials

Daniil A. Kitchaev et al.

Summary: The study presents the first consistent mechanism of nonhysteretic oxidation beyond the transition metal limit, explaining the electrochemical and structural evolution of Na2Mn3O7 and Li2IrO3 model materials. The source of anomalous nonhysteretic capacity is identified as a pi-bonded metal-d and O-p orbital network, enabled by a unique resistance to transition metal migration. Voltage, accessible capacity, and structural evolution upon oxidation are shown to be collective properties of the pi-network rather than local bonding environments.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2021)

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Article Multidisciplinary Sciences

Nonpolarizing oxygen-redox capacity without O-O dimerization in Na2Mn3O7

Akihisa Tsuchimoto et al.

Summary: This study focuses on the origin of voltage hysteresis in oxygen-redox reactions, particularly exploring the stable O· oxygen atoms identified in the Na2-xMn3O7 material. The results indicate that the presence of O· oxygen atoms and the hole stabilization through a (sigma+) multiorbital Mn-O bond are key factors for its small polarization and large capacity.

NATURE COMMUNICATIONS (2021)

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Article Chemistry, Multidisciplinary

Ti-Based Surface Integrated Layer and Bulk Doping for Stable Voltage and Long Life of Li-Rich Layered Cathodes

Dong Luo et al.

Summary: The study developed a Ti-based surface integrated layer and bulk doping to improve the voltage and capacity stability of high-energy-density lithium-rich layered oxides. Experimental results showed that this method effectively suppressed surface structure evolution and interfacial reactions, enhancing battery cycling performance.

ADVANCED FUNCTIONAL MATERIALS (2021)

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Article Chemistry, Physical

Whither Mn Oxidation in Mn-Rich Alkali-Excess Cathodes?

Mateusz Jan Zuba et al.

Summary: Comparing LR-NMC compounds with a model Mn7+ system KMnO4, it was found that beam-induced Mn reduction can be observed in KMnO4, but negligible evidence for Mn oxidation was observed in LR-NMC, indicating a more reduced TM environment.

ACS ENERGY LETTERS (2021)

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Article Energy & Fuels

The role of O2 in O-redox cathodes for Li-ion batteries

Robert A. House et al.

Summary: This study explores the mechanisms and impacts of oxygen redox in lithium-ion batteries, proposing a unified model to reduce instability caused by oxygen redox and provide strategies for achieving more reversible, high energy density cathodes.

NATURE ENERGY (2021)

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Article Chemistry, Physical

Cycling mechanism of Li2MnO3: Li-CO2 batteries and commonality on oxygen redox in cathode materials

Zengqing Zhuo et al.

Summary: By evaluating the Mn and O states in Li2MnO3, it is found that Mn(III/IV) redox dominates the reversible bulk redox, while surface reactions contribute to the initial charge plateau with oxygen release and carbonate decomposition. The absence of lattice oxygen redox in Li2MnO3 questions the origin of oxygen redox in Li-rich compounds, suggesting opportunities for using alkali-rich materials for catalytic reactions.

JOULE (2021)

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Article Chemistry, Physical

Revealing the Thermodynamics and Kinetics of In-Plane Disordered Li2MnO3 Structure in Li-Rich Cathodes

Yun-shan Jiang et al.

Summary: This study investigates the thermodynamic origin of Li2MnO3 superstructures and the kinetic behavior of lithium storage in ordered and disordered Li-rich oxides. The research elucidates the formation energies of different Li/Mn lattice ordering states and demonstrates that the designed disordered material exhibits higher Li+ diffusion kinetics and superior cyclic stability of high capacity. Theoretical calculations show that the negative shift of the d-band center promotes the stabilization of oxygen redox in the structure.

ACS ENERGY LETTERS (2021)

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Article Chemistry, Multidisciplinary

Nanostructure Transformation as a Signature of Oxygen Redox in Li-Rich 3d and 4d Cathodes

Antonin Grenier et al.

Summary: LRNMC cathodes have higher energy storage capacity, but during O oxidation, nanoscale domains of lower electron density are formed within the cathode structure. The observation of nanopores during O oxidation, which is partially reversible, is a common feature in Li-rich systems like Li2RuO3 and Li1.3Nb0.3Mn0.4O2, but not present in traditional cathode materials such as stoichiometric NMC and NCA.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2021)

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Article Chemistry, Physical

Impact of Stacking Faults and Li Substitution in LixMnO3 (0 ≤ x ≤ 2) Structural Transformations upon Delithiation

Jon Serrano-Sevillano et al.

Summary: Lithium-rich layered oxides are considered as next generation Li-ion cathode materials, with Li2MnO3 being used as a model for studying complex structural modifications. This study used density functional theory calculations to investigate the impact of stacking faults on structural transformations in Li2MnO3, revealing that they hinder structural stability.

JOURNAL OF PHYSICAL CHEMISTRY LETTERS (2021)

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Article Multidisciplinary Sciences

Tomographic reconstruction of oxygen orbitals in lithium-rich battery materials

Hasnain Hafiz et al.

Summary: High-energy X-ray Compton measurements and first-principles modelling reveal how the electronic orbital responsible for the reversible anionic redox activity can be imaged and visualized, and its character and symmetry determined. Differential changes in the Compton profile with lithium-ion concentration are sensitive to the phase of the electronic wave function, and carry signatures of electrostatic and covalent bonding effects.

NATURE (2021)

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Article Chemistry, Multidisciplinary

Correlating ligand-to-metal charge transfer with voltage hysteresis in a Li-rich rock-salt compound exhibiting anionic redox

Biao Li et al.

Summary: Anionic redox in Li-ion cathodes offers increased energy density but comes with drawbacks such as voltage hysteresis. This study investigates the origin of voltage hysteresis by designing a Li-rich cation-disordered rock-salt compound and reveals a non-equilibrium redox pathway responsible for voltage hysteresis. The charge transfer involving structural distortion between O and Fe states is found to be the cause of voltage hysteresis.

NATURE CHEMISTRY (2021)

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Article Multidisciplinary Sciences

Activation of anionic redox in d0 transition metal chalcogenides by anion doping

Bernhard T. Leube et al.

Summary: The synthesis of Li2TiS3-xSex solid solution series with mixed ligands reveals a bell-shaped variation in electrochemical activity, peaking at x = 0.6 composition. The capacity results from interactions between anionic and cationic redox processes, with evidence for metal-ligand charge transfer. Insights from this study can guide the rational synthesis of other Li-rich chalcogenides for solid-state batteries.

NATURE COMMUNICATIONS (2021)

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Article Multidisciplinary Sciences

Covalency does not suppress O2 formation in 4d and 5d Li-rich O-redox cathodes

Robert A. House et al.

Summary: Recent findings suggest that Li-rich transition metal oxides undergo O-redox, forming molecular oxygen trapped in the particles during oxidation. This phenomenon occurs across 3d, 4d, and 5d transition metal oxides, indicating a greater covalency in the 4d and 5d compounds does not stabilize peroxo-like species. High resolution RIXS and XAS data for Li2IrO3 support a charge compensation mechanism associated primarily with Ir redox without evidence of O-O dimerization.

NATURE COMMUNICATIONS (2021)

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Article Chemistry, Physical

Metal-Ligand π Interactions in Lithium-Rich Li2RhO3 Cathode Material Activate Bimodal Anionic Redox

Kun Zhang et al.

Summary: Understanding the anionic redox behavior with respect to metal-ligand interactions in Li-rich oxide cathodes is crucial for developing high-capacity battery materials. By analyzing the orbital combinations of transition metals and oxygen in LROs, it was found that a pi-type oxygen redox mode can be achieved at low voltages, expanding the fundamental theories of anionic redox and providing a new design route for high-capacity cathode materials. The interaction between oxygen and central Rh in Li2RhO3 demonstrates high reactivity in the occupied anti-bonding state, showing a novel low-voltage oxygen redox mechanism.

ADVANCED ENERGY MATERIALS (2021)

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Article Chemistry, Physical

Distinct Oxygen Redox Activities in Li2MO3 (M = Mn, Ru, Ir)

Zengqing Zhuo et al.

Summary: This study re-evaluated the redox reactions in Li2RuO3 and found both Ru and O redox to be highly reversible, contrasting with other Li2MO3 systems. The critical role of transition metals and their coupling to oxygen in maintaining reversible oxygen redox activities for high-energy batteries was highlighted through this research.

ACS ENERGY LETTERS (2021)

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Article Chemistry, Multidisciplinary

Anionic redox reaction triggered by trivalent Al3+ in P3-Na0.65Mn0.5Al0.5O2

Ding-Ren Shi et al.

Summary: This study comprehensively investigated the electrochemical mechanism of the cathode material NMAO for sodium ion batteries through experimental and computational methods, revealing that the reversible oxygen redox behavior is triggered by Al3+ through the oxygen quasi non-bonding states. The presence of Al3+ is found to suppress oxygen loss in the anionic redox reaction, providing new insights into the design and mechanism of anionic redox active cathode materials.

CHEMICAL COMMUNICATIONS (2021)

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Article Chemistry, Multidisciplinary

Ultralow-Strain Zn-Substituted Layered Oxide Cathode with Suppressed P2-O2 Transition for Stable Sodium Ion Storage

Yanxia Wang et al.

ADVANCED FUNCTIONAL MATERIALS (2020)

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Article Chemistry, Multidisciplinary

Reversible Anionic Redox Activities in Conventional LiNi1/3Co1/3Mn1/3O2 Cathodes

Gi-Hyeok Lee et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2020)

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Article Chemistry, Physical

Exploring the Kinetic Limitations Causing Unusual Low-Voltage Li Reinsertion in Either Layered or Tridimensional Li2IrO3 Cathode Materials

Biao Li et al.

CHEMISTRY OF MATERIALS (2020)

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Article Multidisciplinary Sciences

Superstructure control of first-cycle voltage hysteresis in oxygen-redox cathodes

Robert A. House et al.

NATURE (2020)

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Article Chemistry, Physical

Voltage decay and redox asymmetry mitigation by reversible cation migration in lithium-rich layered oxide electrodes

Donggun Eum et al.

NATURE MATERIALS (2020)

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Article Multidisciplinary Sciences

Structural evolution at the oxidative and reductive limits in the first electrochemical cycle of Li1.2Ni0.13Mn0.54Co0.13O2

Ei Yin et al.

NATURE COMMUNICATIONS (2020)

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Article Chemistry, Multidisciplinary

Dielectric Polarization in Inverse Spinel-Structured Mg2TiO4 Coating to Suppress Oxygen Evolution of Li-Rich Cathode Materials

Wei Zhang et al.

ADVANCED MATERIALS (2020)

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Article Chemistry, Physical

Charging Mechanism of Li2MnO3

Niccolo Guerrini et al.

CHEMISTRY OF MATERIALS (2020)

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Review Chemistry, Physical

Design Rules for High-Valent Redox in Intercalation Electrodes

William E. Gent et al.

JOULE (2020)

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Article Chemistry, Physical

Oxygen redox activity with small voltage hysteresis in Na0.67Cu0.28Mn0.72O2 for sodium-ion batteries

Wei Zheng et al.

ENERGY STORAGE MATERIALS (2020)

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Article Nanoscience & Nanotechnology

Tailoring of Gradient Particles of Li-Rich Layered Cathodes with Mitigated Voltage Decay for Lithium-Ion Batteries

Xiaokang Ju et al.

ACS APPLIED MATERIALS & INTERFACES (2020)

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Article Chemistry, Physical

Anionic Redox Activity Regulated by Transition Metal in Lithium-Rich Layered Oxides

Jun-Hyuk Song et al.

ADVANCED ENERGY MATERIALS (2020)

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Article Multidisciplinary Sciences

Inhibition of oxygen dimerization by local symmetry tuning in Li-rich layered oxides for improved stability

Fanghua Ning et al.

NATURE COMMUNICATIONS (2020)

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Article Energy & Fuels

First-cycle voltage hysteresis in Li-rich 3dcathodes associated with molecular O2trapped in the bulk

Robert A. House et al.

NATURE ENERGY (2020)

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Article Chemistry, Physical

Relationship between rate performance and electronic/structural changes during oxygen redox of lithium-rich 4d/3d transition metal oxides

Aruto Watanabe et al.

SOLID STATE IONICS (2020)

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Article Chemistry, Physical

Metal-oxygen decoordination stabilizes anion redox in Li-rich oxides

Jihyun Hong et al.

NATURE MATERIALS (2019)

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Article Chemistry, Physical

Unified picture of anionic redox in Li/Na-ion batteries

Mouna Ben Yahia et al.

NATURE MATERIALS (2019)

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Article Chemistry, Physical

Understanding the Low-Voltage Hysteresis of Anionic Redox in Na2Mn3O7

Bohang Song et al.

CHEMISTRY OF MATERIALS (2019)

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Article Chemistry, Multidisciplinary

Unraveling Oxygen Evolution in Li-Rich Oxides: A Unified Modeling of the Intermediate Peroxo/Superoxo-like Dimers

Zhenlian Chen et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2019)

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Article Chemistry, Multidisciplinary

Charge Transfer Band Gap as an Indicator of Hysteresis in Li-Disordered Rock Salt Cathodes for Li-Ion Batteries

Quentin Jacquet et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2019)

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Editorial Material Chemistry, Physical

What Limits the Capacity of Layered Oxide Cathodes in Lithium Batteries?

Hui Zhou et al.

ACS ENERGY LETTERS (2019)

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Article Energy & Fuels

Probing the thermal effects of voltage hysteresis in anionic redox-based lithium-rich cathodes using isothermal calorimetry

Gaurav Assat et al.

NATURE ENERGY (2019)

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Article Energy & Fuels

Manganese oxidation as the origin of the anomalous capacity of Mn-containing Li-excess cathode materials

Maxwell D. Radin et al.

NATURE ENERGY (2019)

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Article Energy & Fuels

Exploring the bottlenecks of anionic redox in Li-rich layered sulfides

Sujoy Saha et al.

NATURE ENERGY (2019)

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Article Chemistry, Physical

Native Vacancy Enhanced Oxygen Redox Reversibility and Structural Robustness

Yejing Li et al.

ADVANCED ENERGY MATERIALS (2019)

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Article Energy & Fuels

Gradient Li-rich oxide cathode particles immunized against oxygen release by a molten salt treatment

Zhi Zhu et al.

NATURE ENERGY (2019)

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Article Chemistry, Physical

High Reversibility of Lattice Oxygen Redox Quantified by Direct Bulk Probes of Both Anionic and Cationic Redox Reactions

Kehua Dai et al.

JOULE (2019)

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Article Chemistry, Physical

Anionic Redox Reaction-Induced High-Capacity and Low-Strain Cathode with Suppressed Phase Transition

Xiaohui Rong et al.

JOULE (2019)

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Article Chemistry, Multidisciplinary

Oxygen redox chemistry without excess alkali-metal ions in Na-2/3[Mg0.28Mn0.72]O-2

Urmimala Maitra et al.

NATURE CHEMISTRY (2018)

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Article Multidisciplinary Sciences

Elucidating anionic oxygen activity in lithium-rich layered oxides

Jing Xu et al.

NATURE COMMUNICATIONS (2018)

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Article Chemistry, Physical

Highly Reversible Oxygen-Redox Chemistry at 4.1 V in Na4/7-x[square 1/7Mn6/7]O2 (square: Mn Vacancy)

Benoit Mortemard de Boisse et al.

ADVANCED ENERGY MATERIALS (2018)

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Review Energy & Fuels

Fundamental understanding and practical challenges of anionic redox activity in Li-ion batteries

Gaurav Assat et al.

NATURE ENERGY (2018)

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Article Energy & Fuels

Nucleation of dislocations and their dynamics in layered oxide cathode materials during battery charging

A. Singer et al.

NATURE ENERGY (2018)

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Article Energy & Fuels

Evolution of redox couples in Li- and Mn-rich cathode materials and mitigation of voltage fade by reducing oxygen release

Enyuan Hu et al.

NATURE ENERGY (2018)

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Article Chemistry, Multidisciplinary

Temperature-Sensitive Structure Evolution of Lithium-Manganese-Rich Layered Oxides for Lithium-Ion Batteries

Haijun Yu et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2018)

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Article Chemistry, Physical

Anionic Redox Activity in a Newly Zn-Doped Sodium Layered Oxide P2-Na2/3Mn1-yZnyO2 (0 < y < 0.23)

Xue Bai et al.

ADVANCED ENERGY MATERIALS (2018)

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Article Chemistry, Physical

Na2Mn0.33+Mn2.74+O6.85: A cathode with simultaneous cationic and anionic redox in Na-ion battery

Qidi Wang et al.

ENERGY STORAGE MATERIALS (2018)

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Article Chemistry, Physical

Structure-Induced Reversible Anionic Redox Activity in Na Layered Oxide Cathode

Xiaohui Rong et al.

JOULE (2018)

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Article Chemistry, Multidisciplinary

Requirements for reversible extra-capacity in Li-rich layered oxides for Li-ion batteries

Y. Xie et al.

ENERGY & ENVIRONMENTAL SCIENCE (2017)

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Review Chemistry, Physical

Sustainability and in situ monitoring in battery development

C. P. Grey et al.

NATURE MATERIALS (2017)

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Article Multidisciplinary Sciences

Coupling between oxygen redox and cation migration explains unusual electrochemistry in lithium-rich layered oxides

William E. Gent et al.

NATURE COMMUNICATIONS (2017)

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Article Multidisciplinary Sciences

Fundamental interplay between anionic/cationic redox governing the kinetics and thermodynamics of lithium-rich cathodes

Gaurav Assat et al.

NATURE COMMUNICATIONS (2017)

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Review Chemistry, Physical

Narrowing the Gap between Theoretical and Practical Capacities in Li-Ion Layered Oxide Cathode Materials

Maxwell D. Radin et al.

ADVANCED ENERGY MATERIALS (2017)

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Article Chemistry, Physical

Oxygen activity and peroxide formation as charge compensation mechanisms in Li2MnO3

Anika Marusczyk et al.

JOURNAL OF MATERIALS CHEMISTRY A (2017)

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Article Chemistry, Physical

Extending the Battery Life Using an Al-Doped Li[Ni0.76Co0.09Mn0.15]O2 Cathode with Concentration Gradients for Lithium Ion Batteries

Un-Hyuck Kim et al.

ACS ENERGY LETTERS (2017)

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Article Energy & Fuels

Approaching the limits of cationic and anionic electrochemical activity with the Li-rich layered rocksalt Li3IrO4

Arnaud J. Perez et al.

NATURE ENERGY (2017)

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Article Chemistry, Physical

Correlations between Transition-Metal Chemistry, Local Structure, and Global Structure in Li2Ru0.5Mn0.5O3 Investigated in a Wide Voltage Window

Yingchun Lyu et al.

CHEMISTRY OF MATERIALS (2017)

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Review Nanoscience & Nanotechnology

Molecular Orbital Principles of Oxygen-Redox Battery Electrodes

Masashi Okubo et al.

ACS APPLIED MATERIALS & INTERFACES (2017)

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Article Chemistry, Physical

Redox Potential Paradox in NaxMO2 for Sodium-Ion Battery Cathodes

Yusuke Nanba et al.

CHEMISTRY OF MATERIALS (2016)

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Article Chemistry, Physical

Lithium Extraction Mechanism in Li-Rich Li2MnO3 Involving Oxygen Hole Formation and Dimerization

Hungru Chen et al.

CHEMISTRY OF MATERIALS (2016)

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Article Chemistry, Multidisciplinary

Exploring reversible oxidation of oxygen in a manganese oxide

Ke Du et al.

ENERGY & ENVIRONMENTAL SCIENCE (2016)

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Article Chemistry, Multidisciplinary

The intriguing question of anionic redox in high-energy density cathodes for Li-ion batteries

M. Saubanere et al.

ENERGY & ENVIRONMENTAL SCIENCE (2016)

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Article Chemistry, Physical

Influence of Mg2+ doping on the structure and electrochemical performances of layered LiNi0.6Co0.2-xMn0.2MgxO2 cathode materials

Zhenjun Huang et al.

JOURNAL OF ALLOYS AND COMPOUNDS (2016)

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Article Electrochemistry

Practical Assessment of Anionic Redox in Li-Rich Layered Oxide Cathodes: A Mixed Blessing for High Energy Li-Ion Batteries

Gaurav Assat et al.

JOURNAL OF THE ELECTROCHEMICAL SOCIETY (2016)

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Article Chemistry, Multidisciplinary

The structural and chemical origin of the oxygen redox activity in layered and cation-disordered Li-excess cathode materials

Dong-Hwa Seo et al.

NATURE CHEMISTRY (2016)

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Article Chemistry, Multidisciplinary

Charge-compensation in 3d-transition-metal-oxide intercalation cathodes through the generation of localized electron holes on oxygen

Kun Luo et al.

NATURE CHEMISTRY (2016)

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Article Multidisciplinary Sciences

Gas-solid interfacial modification of oxygen activity in layered oxide cathodes for lithium-ion batteries

Bao Qiu et al.

NATURE COMMUNICATIONS (2016)

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Article Chemistry, Physical

Structural integrity-Searching the key factor to suppress the voltage fade of Li-rich layered cathode materials through 3D X-ray imaging and spectroscopy techniques

Yahong Xu et al.

NANO ENERGY (2016)

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Review Chemistry, Multidisciplinary

Review of the US Department of Energy's Deep Dive Effort to Understand Voltage Fade in Li- and Mn-Rich Cathodes

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ACCOUNTS OF CHEMICAL RESEARCH (2015)

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