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Article
Chemistry, Physical
Yan He et al.
Summary: In this study, a high-performance sol-binder based on propylene carbonate and poly(vinylidene fluoride) is designed to fabricate uniform slurry and optimize binder distribution, resulting in a robust and healthy active material microenvironment (ME@AM). The sol-to-gel transition of the sol-binder during high-temperature drying prevents component aggregation/separation and improves overall electrode performance.
ADVANCED ENERGY MATERIALS
(2023)
Article
Chemistry, Physical
Hao Huang et al.
Summary: The currently dominant cathode material Li(NixCoyMnz)O-2(NCM, x + y + z = 1) in lithium-ion batteries exhibits higher energy density with increasing nickel content, but it also suffers from stronger interface reactions with the electrolyte and worse safety performance. Single crystal cathode materials have advantages such as fewer grain boundaries, higher density, and suppressed microcracks, leading to reduced interfacial side reactions and improved volumetric energy density and safety performance. In this study, a pulse high-temperature sintering (PHTS) strategy is reported to prepare single-crystal Li(Ni0.9Co0.05Mn0.05)O-2 (SC-NCM90), which shows enhanced tap density and thermal stability compared to spherical NCM90 particles.
ADVANCED ENERGY MATERIALS
(2023)
Article
Chemistry, Physical
Minghao Zhang et al.
Summary: Using a thick NMC811 electrode as an example, this study employs a macro-to-nanoscale 2D and 3D imaging analysis approach combined with 4D computational modeling to investigate its degradation mechanism in a lithium-ion battery cell. The results reveal that the reaction heterogeneity caused by unbalanced electron conduction within the thick cathode is the main cause of battery degradation over cycling. The increased heterogeneity leads to uneven utilization of active material and higher probabilities of particle cracking.
Article
Engineering, Environmental
Yuhang Hu et al.
Summary: Researchers found that doping Li with 8.9 at% Sn can create a Li-Li22Sn5 dual-phase alloy with impressive processability, allowing the fabrication of thin foils. The textured Li-alloy exhibits stable plate-strip cycling and improved performance.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Multidisciplinary Sciences
Minje Ryu et al.
Summary: In this study, a feasible and sustainable dry press-coating process is proposed to fabricate electrodes for lithium-ion batteries. This process improves the mechanical strength and performance of the electrodes compared to traditional wet coating, allowing for high loading and impressive specific energy and volumetric energy density.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Hoseong Kim et al.
Summary: A comprehensive comparison of lithium- and sodium-ion storage behaviors in hard carbon reveals that lithium-ion mainly undergoes intercalation in the graphitic lattices while sodium-ion primarily occurs through chemisorption on the inner surfaces of closed pores. The redox sites for plateau capacities are the same for both ions and are located in the closed pores. Sodium-ion plateau capacities depend on the volume of available closed pores, while lithium-ion plateau capacities are influenced by intercalation propensity. Intercalation preference and plateau capacity have an inverse correlation. These findings provide a clearer understanding of the electrochemical behavior of hard carbon anodes and offer insights for designing better anodes.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Physical
Zhiwei Jing et al.
Summary: Li-rich Ni-rich Li1.08Ni0.9Mn0.1O2 oxides with core-shell architecture were synthesized to improve their high-voltage cyclability. The thermally-driven atomic interdiffusion between the Mn-rich shell and the Ni-rich core formed a thickness-controllable Li-rich Mn-rich shell, ensuring exceptional structural reversibility for the layered Li-rich Ni-rich core in long-term cycling. The optimized core-shell Li1.08Ni0.9Mn0.1O2 achieved a capacity retention of 96% after 100 cycles at 0.1 C in the voltage range of 2.7-4.6 V, providing a new avenue for rational design of advanced cathode materials for LIBs and beyond.
ENERGY STORAGE MATERIALS
(2023)
Article
Engineering, Environmental
Minhyuck Park et al.
Summary: In this study, a catalytic support consisting of a 3D carbon nanofiber scaffold coated with LiNO3 was developed to achieve a high-performance lithium metal anode (LMA) for use in carbonate-based electrolyte systems. The support not only inhibits side reactions, improves lithium-ion transport kinetics, and promotes uniform deposition/dissolution of lithium, but also enables stable cycling over 300 cycles. In addition, when combined with a high-voltage NCM811 cathode, the LMA based on the proposed support demonstrates significantly improved cycling performance with high energy and power densities.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Energy & Fuels
Daan Zhao et al.
Summary: A coupled electrochemical and thermal model is used to study the effects of electrode thickness on polarization and thermal characteristics in lithium-ion batteries. The results show that concentration polarization in the solid matrix of the positive and negative electrodes leads to larger voltage drop amplitudes in the beginning and end of the discharge process, respectively. With an increase in electrode thickness, the ratio of concentration polarization in the liquid electrolyte to total polarization increases, resulting in higher temperatures and more non-uniform temperature distributions in the battery under higher discharge rates, and a decrease in discharge energy efficiency.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Chemistry, Multidisciplinary
Hang Sheng et al.
Summary: A stable high-nickel cathode is designed by inducing a dense amorphous Li2CO3 coating layer on the particle surface. This coating layer serves as a physical protection layer and can be transformed into a robust cathode electrolyte interphase (CEI), improving the cathode's interfacial stability and electrochemical performance.
ADVANCED MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Yu-Jie Guo et al.
Summary: Chemical modification of electrode materials by heteroatom dopants is crucial for improving storage performance in rechargeable batteries. This study investigates the competitive doping chemistry of boron and aluminum in nickel-rich cathode materials. The atomic radii difference between B and Al leads to different spatial configurations of bonding with lattice oxygen. The findings provide insights into stabilizing the structural evolution and surface chemistry of the cathode.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Physical
Nag-Young Kim et al.
Summary: Amphiphilic bottlebrush polymers (BBPs) designed as a new class of cathode binder material exhibit process compatibility, strong adhesive properties, and transition metal ion chelation capabilities, resulting in high-performance NCM811 cathodes with high mass loading.
ADVANCED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Aurora Gomez-Martin et al.
Summary: This study investigates the Mg substitution of Ni-rich LiNi1-x-yMnxCoyO2 (NMC) layered oxides and demonstrates a linear correlation between cycle life and attainable gravimetric capacities, which are influenced by the degree of Mg substitution and the amount of cycled Li+ ions. To achieve a higher energy density, a lower Mg content and higher Ni content should be considered.
ADVANCED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Xiang Han et al.
Summary: This research report introduces a method for fabricating solid-state composite cathodes using liquid-phase sintering technology, which can improve the energy density and safety of solid-state batteries. This method utilizes low-melting-point additives to achieve high area capacity and density in the composite cathode structure.
Article
Chemistry, Multidisciplinary
Hyeokjun Park et al.
Summary: Nickel-rich layered oxides are important cathode materials for lithium-ion batteries. The synthesis process is influenced by the kinetic competition between thermal decomposition and lithiation, which leads to the formation of spatially heterogeneous intermediates. Thermal decomposition results in defective structures, while promoting lithiation can mitigate their generation and suppress chemo-mechanical failures.
Review
Chemistry, Physical
Zidong Chen et al.
Summary: This review discusses the ongoing efforts in tailoring the surfaces of silicon particles to minimize changes to their integral structure during the cycle in lithium-ion batteries. The emerging organic moieties on silicon offer new ways to tune the interactions with battery components and stabilize the silicon. The review highlights the important role of organic components and provides successful examples of tailored interactions with electrolytes, binders, and conductive agents.
ADVANCED ENERGY MATERIALS
(2022)
Review
Energy & Fuels
Jia Xu et al.
Summary: This review summarizes the recent research progress of MOF/carbon-based functional materials composites in the field of batteries and supercapacitors, and prospects their future development.
JOURNAL OF ENERGY STORAGE
(2022)
Review
Materials Science, Multidisciplinary
Xiaoge Liu et al.
Summary: This review systematically summarizes the recent progress of MOF-based hybrid nanofiber membranes prepared by electrospinning, focusing on their application in energy storage and environmental protection. The methods of preparation are discussed, and the applications and future research directions are explored.
ADVANCED FIBER MATERIALS
(2022)
Article
Chemistry, Physical
Dong Hyuk Kang et al.
Summary: This study investigates the key factor in promoting the hydrogen evolution reaction (HER) in carbon-based electrode materials (CEMs) and finds that ultramicropores play a critical role. When CEMs have a proper graphitic structure with few ultramicropores, high-performance aqueous zinc batteries can be achieved.
Article
Chemistry, Multidisciplinary
David J. Arnot et al.
Summary: This article discusses three critical aspects of thick high-loading electrode science and technology, including design and fabrication methods, advanced characterization methods, and the use of modeling. Through these methods, lithium-ion batteries with high energy density and power output can be achieved, advancing the development of next-generation batteries.
ACCOUNTS OF MATERIALS RESEARCH
(2022)
Article
Chemistry, Multidisciplinary
Chul-Ho Jung et al.
Summary: Phosphorous- and boron-doped Ni-rich layered cathodes with a textured microstructure show enhanced cycle stability compared to undoped cathodes. The boron-doped cathode not only suppresses microcrack formation during cycling but also exhibits better cycle stability due to its primary particle morphology that is resistant to oxygen evolution.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Yangfan Zhang et al.
Summary: By using ethylene vinyl acetate copolymer (EVA) as flexible supports and ion channels, high-energy-density flexible LFP/CNT/EVA cathode and LTO/CNT/EVA anode are successfully prepared, achieving high energy density and all flexible LIBs. The system is able to maintain a constant specific capacity while increasing thickness, resulting in ultrahigh areal capacity.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Chemistry, Physical
Eyob Belew Abebe et al.
Summary: In this study, nickel-rich layered oxide cathode materials were modified by adding a specific amount of lithium excess, resulting in improved electrochemical performance such as enhanced discharge capacity retention and rate capability. The optimal lithium excess in the NCM90 cathode materials showed potential for use in next-generation lithium-ion batteries.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Chemistry, Physical
Kai Yang et al.
Summary: This study prepared aligned electrodes with high mass loading and areal capacities by copolymerizing xanthan gum and amorphophallus konjac gum, using an ice-templating method. The KG-XG copolymer not only firmly holds active materials together, but also improves effective porosity and homogeneous dispersion of conductive agents.
ADVANCED ENERGY MATERIALS
(2021)
Article
Chemistry, Physical
Tianqi Wu et al.
Summary: A high-performance thick electrode was fabricated through layer-by-layer assembly of two-dimensional nanosheets, allowing for abundant ion-transport channels. The new electrode exhibits excellent capacity and areal capacity, marking a significant stride towards higher energy density.
ENERGY STORAGE MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Jingyi Wu et al.
Summary: The pursuit of higher energy and power outputs in batteries has led researchers to focus on optimizing electrode thickness and other key design parameters to achieve higher cell-level energy and power densities. Strategies to simultaneously enhance energy and power output have been elaborated upon, while remaining challenges towards scalable high-energy/power energy-storage systems have been highlighted.
ADVANCED MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Xiao Zhang et al.
Summary: This study introduces a modified ice-templating method to fabricate low-tortuosity porous electrodes and systematically investigates the impact of structural parameters on thick electrode electrochemistry. It reveals that electrodes with thinner walls can maintain higher capacity under higher current densities.
Article
Chemistry, Physical
Junru Wang et al.
Summary: The study presents a novel strategy for constructing thick electrodes towards high energy density LIBs, by preparing ultrahigh-capacity thick LiFePO4 (UCT-LFP)-based freestanding electrodes with vertically-aligned channels. The electrodes show superior rate capability and cycling performance.
ENERGY STORAGE MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Xiang Han et al.
Summary: Solid-state batteries (SSBs) have the potential to improve safety and energy density compared to conventional liquid cells. By utilizing NASICON-type solid electrolyte Li1.3Al0.3Ti1.7(PO4)3 (LATP) and constructing mixed conductive interphases through low-melting-point liquid sintering, high-loading solid cathodes with improved kinetics have been achieved, showing promising capacity loading up to 6 mA h cm(-2) for LATP/LiCoO2 cathodes and up to 10 mAh cm(-2) for Ni-rich cathodes, leading to cells with energy density exceeding 400 Wh kg(-1).
ENERGY & ENVIRONMENTAL SCIENCE
(2021)
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Wangda Li et al.
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Kyu-Young Park et al.
JOURNAL OF POWER SOURCES
(2020)
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Yujing Bi et al.
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Yudi Kuang et al.
ADVANCED ENERGY MATERIALS
(2019)
Review
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Yayuan Liu et al.
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Sang-Hoon Park et al.
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Jingxu Zheng et al.
ACS ENERGY LETTERS
(2019)
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Jae-Hyung Kim et al.
JOURNAL OF MATERIALS CHEMISTRY A
(2019)
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Hyeon Ji Yoon et al.
ADVANCED ENERGY MATERIALS
(2018)
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Hoon-Hee Ryu et al.
CHEMISTRY OF MATERIALS
(2018)
Article
Multidisciplinary Sciences
Pengfei Yan et al.
NATURE COMMUNICATIONS
(2018)
Article
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Pengfei Yan et al.
Article
Electrochemistry
Malcolm Stein et al.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2017)
Article
Multidisciplinary Sciences
Se Youn Cho et al.
NATURE COMMUNICATIONS
(2017)
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Chaoji Chen et al.
ADVANCED ENERGY MATERIALS
(2017)
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O. Schmidt et al.
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Electrochemistry
Kevin G. Gallagher et al.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2016)
Review
Chemistry, Multidisciplinary
D. Larcher et al.
Article
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Karnail B. Singh et al.
PHYSICAL REVIEW LETTERS
(2007)
