Related references
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Article
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Yulun Wu et al.
Summary: Li2NiO2 cathode prelithiation additive has been successfully used in Li-ion batteries industry to compensate the initial capacity loss (ICL), but the lithium compensation properties during the first cycle are inferior. In this study, a Cu-substituted Li2Cu0.1Ni0.9O2 is reported to address this issue. Li2Cu0.1Ni0.9O2 shows considerably improved lithium compensation performances, with enhanced initial charge capacity and reversible discharge capacity, effectively offsetting the ICL. When applied in a graphite/NCM811 full-cell, exceptional initial charge capacity and discharge capacity can be achieved. This work provides new possibilities for cathode prelithiation additives for next-generation LIBs.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
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Chunliu Xu et al.
Summary: A Na superionic conductor Na3MnTi(PO4)(3) with desirable cycling stability and high safety is considered as a promising cathode for Na-ion batteries. However, the voltage hysteresis caused by Mn2+ ions has led to significant capacity loss. Through the sodium excess strategy, the voltage hysteresis can be suppressed, resulting in improved kinetic properties and increased reversible capacity. Based on these findings, a Na3.6Mn1.15Ti0.85(PO4)(3) cathode with high energy density was developed, surpassing most phosphate cathodes and demonstrating great potential for applications in Na-ion batteries.
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(2023)
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Ping Hu et al.
Summary: A series of NASICON-type Na3+xMnTi1-xVx(PO4)(3) cathode materials are designed, demonstrating multi-electron reaction and high voltage platform. The optimized material Na3.2MnTi0.8V0.2(PO4)(3) achieves a reversible 3.2-electron redox reaction, enabling high discharge capacity and ultrahigh energy density.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
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Yuhang Dai et al.
Summary: Routine electrolyte additives are not effective enough for uniform zinc (Zn) deposition. Based on underpotential deposition (UPD), an escort effect of electrolyte additives for uniform Zn deposition at the atomic level is proposed. With nickel ion (Ni2+) additives, metallic Ni deposits preferentially and triggers the UPD of Zn on Ni, facilitating firm nucleation and uniform growth of Zn while suppressing side reactions. The optimized cell operates for over 900 h at 1 mA cm(-2), more than 4 times longer than the blank one, indicating the significance of this work.
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Shihao Li et al.
Summary: Due to the high capacity and high voltage resulting from anionic redox, Li-rich layered oxides (LLOs) have become the most promising cathode candidate for the next-generation high-energy-density lithium-ion batteries (LIBs). However, the participation of oxygen anion in charge compensation causes various problems such as structural degradation and voltage decay. To address these challenges, a rational structural design strategy is proposed to stabilize oxygen redox from the surface to bulk of LLOs. This design includes an integrated structure on the surface to suppress oxygen release and electrolyte attack, and B doping into Li and Mn layer tetrahedron in the bulk to enhance stability and ions transport ability.
Article
Multidisciplinary Sciences
Jiyu Zhang et al.
Summary: This research addresses the issues of slow kinetics and interfacial instability in non-aqueous sodium-ion batteries (SiBs) by proposing the multiscale interface engineering of Na2.26Fe1.87(SO4)(3). Through this engineering, the Na-ion storage performance of the positive electrode is improved. Physicochemical characterizations and theoretical calculations suggest that the heterostructure of Na6Fe(SO4)(4) phase and the (11-2) plane of Na2.26Fe1.87(SO4)(3) play significant roles in enhancing ionic kinetics and forming an inorganic-rich Na-ion conductive interphase.
NATURE COMMUNICATIONS
(2023)
Editorial Material
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Ashish Rudola et al.
Summary: Today's sodium-ion batteries have potential applications in both stationary energy storage and electric vehicles with driving ranges of 160-280 miles for five passengers. This technology offers a solution to the limited resources of materials used in widely adopted lithium-ion batteries, thereby addressing supply-chain issues.
Review
Chemistry, Multidisciplinary
Wenhua Zuo et al.
Summary: Sodium-ion batteries (NIBs) have emerged as ideal alternatives for large-scale energy storage systems due to their abundant resources, low-cost materials, and improved energy density and cycling stability. However, challenges such as irreversible phase transformations, poor air stability, and relatively high cost need to be addressed for the commercialization of NIBs. This Account discusses recent progress in the development of air-stable, electrochemically stable, and cost-effective NaxTMO2 cathode materials for NIBs.
ACCOUNTS OF CHEMICAL RESEARCH
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Jian Peng et al.
Summary: In this study, the sodium storage properties of hexacyanoferrate (HCF) have been greatly improved by the high-entropy (HE) concept. The synthesis of a high-entropy HCF material has been achieved, demonstrating impressive cycling stability and fast-charging capability. The material also exhibits remarkable air stability and all-climate performance. Through multiple in situ techniques and density functional theory calculations, the reaction mechanism and sodium diffusion coefficient of the material have been measured and analyzed. This research provides new insights into the development of advanced electrodes and the tuning of electrochemical performance through atomic composition.
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Ruwei Chen et al.
Summary: This study proposes a hydrated deep eutectic electrolyte with reduced free water content, which can suppress water-induced side reactions and provide high Zn2+ mass transfer kinetics. This results in highly reversible Zn anodes and high capacity Zn//NVO full cells.
ENERGY & ENVIRONMENTAL SCIENCE
(2023)
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Summary: Hybrid capacitors are emerging for their ability to store large amounts of energy and maintain stability even in harsh environments or extreme temperatures. Novel aqueous multivalent cation storage systems have been developed to address safety concerns. Carbon-based nanomaterials are attractive for their outstanding properties and have been extensively studied in multivalent-ion hybrid capacitors (MIHCs). This paper reviews recent advances in MIHCs and carbon-based materials, providing insights and commercialization reference for laboratory research.
ENERGY & ENVIRONMENTAL SCIENCE
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Zhen-Yi Gu et al.
Summary: This study investigates the issue of voltage plateau regulation for cathode materials with fixed active center in sodium-ion batteries. A high-entropy substitution strategy is utilized to alter the crystal structure of the cathode materials, resulting in enhanced electronic conductivity and reduced diffusion barrier for Na+. The carbon-free high-entropy Na3V1.9(Ca,Mg,Al,Cr,Mn)(0.1)(PO4)(2)F-3 cathode exhibits higher mean voltage and advantageous energy density. The introduction of high entropy enables higher working voltage of the cathode, and coupling with a hard carbon anode achieves high specific energy density.
ADVANCED MATERIALS
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Junliang Lu et al.
Summary: The introduction of heavy fluorination into the layered anionic framework of a Li-Mn-O-F cathode has successfully inhibited the irreversible oxygen redox process, improved the reversibility of oxygen redox, and greatly enhanced the reversible capacity to nearly reach the theoretical capacity.
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Chunliu Xu et al.
Summary: In this study, a selective replacement of vanadium rather than manganese in the Na4VMn(PO4)(3) system was developed to enhance the anode performance and structural stability. Experimental results confirmed that the Al-substituted Na4V0.8Al0.2Mn(PO4)(3) anode exhibited favorable ion kinetics and structure stability.
ACS ENERGY LETTERS
(2022)
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Wei Zhang et al.
Summary: In this study, a new cathode material for sodium-ion batteries, Na2TiV(PO4)(3), with multi-electron redox reaction and high stability, was successfully synthesized. The material exhibited an ultrahigh capacity and fast storage performance, as well as good air stability and high/low-temperature properties.
CHEMICAL ENGINEERING JOURNAL
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Chunliu Xu et al.
Summary: This study explores a doping strategy using low-cost Fe2+ to activate V4+/V5+ redox, aiming to increase the energy density of phosphate cathodes. The reversible activation of V4+/V5+ redox is found to be related to Na positions.
ADVANCED ENERGY MATERIALS
(2022)
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Wei Zhang et al.
Summary: In this study, a reduced graphene oxide supported NASICON Na3Cr0.5V1.5(PO4)(3) cathode with ultrafast and ultrastable sodium storage properties was designed. It exhibited high energy density, excellent fast-charging performance, and a three-electron transfer reaction based on fully activated V5+/V4+, V4+/V3+, V3+/V2+ couples.
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Summary: This study presents an initial anode-free sodium battery with an energy density exceeding 200 Wh kg(-1), showcasing the potential for sodium batteries to rival lithium-ion battery performance. Through innovative design and interface chemistry, the cycling lifetime of the sodium battery reaches an impressive 260 cycles without applying additional pressure, providing insights for further development of high-performance sodium batteries.
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Qinhao Shi et al.
Summary: The authors propose a method to improve the performance of P2-type sodium metal oxide cathode materials by niobium doping, and demonstrate their high-efficiency energy storage performance at different temperatures through experiments.
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Ping Hu et al.
Summary: To enhance battery energy density and understand the charge storage mechanism, it is important to reduce non-active materials in electrodes. In this study, a free-standing Na4MnV(PO4)(3)@C fiber membrane was used as a sodium-ion battery cathode, showing reversible redox reactions and ion diffusion behavior. The assembled battery exhibited high energy density and good cyclability.
ADVANCED FUNCTIONAL MATERIALS
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Rui Zhang et al.
Summary: By using a new compositionally complex doping strategy, researchers have successfully fabricated a high-Ni, zero-Co layered cathode with extremely high thermal and cycling stability. The cathode exhibits nearly zero volumetric change, greatly reducing lattice defects and local strain-induced cracks. This study is of great significance for addressing the safety and stability concerns of high-Ni, zero-Co cathode materials.
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Zhengyan Lun et al.
Summary: High-entropy ceramics are solid solutions with compositional flexibility and wide applicability, showing substantial performance improvement in lithium-ion battery cathodes. The high-entropy concept leads to enhancements in energy density and rate capability, especially in cation-disordered rocksalt-type cathodes. High-entropy materials have the potential for various applications and the design of high-entropy solid solutions in the DRX space can further enhance performance in battery electrodes.
Review
Chemistry, Multidisciplinary
Yaosen Tian et al.
Summary: The significant advancements in performance and cost of lithium-ion batteries have made them the preferred technology for electrical energy storage, but they may not meet all the requirements for large-scale applications. Hence, exploration of beyond lithium-ion technologies including sodium-ion batteries, potassium-ion batteries, all-solid-state batteries, and multivalent batteries is accelerating.
Article
Chemistry, Multidisciplinary
Yongjie Zhao et al.
Summary: The study introduces a NASICON-structured Na4MnCr(PO4)(3) cathode with high specific capacity and operation potential, demonstrating a distinct three-electron redox reaction during the insertion/extraction process. The highly stable NASICON structure with minimal volume variation ensures long-term cycling stability, with impedance analysis and interface characterization revealing the correlation between capacity fading and cathode electrolyte interphase evolution at high potential.
Review
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Fabian Duffner et al.
Summary: This review highlights the current production status of representative PLIBs and the advantages of lithium-ion batteries as advanced electrochemical energy storage technology. It also discusses the research and manufacturing processes of post-lithium technologies.
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Mohammed Hadouchi et al.
Summary: The new material exhibits high initial discharge capacity and outstanding rate capability and cycle life, attributed to its small volume change and single-phase mechanism. Experimental data and computational methods reveal the mechanism of sodium extraction and diffusion kinetics. These findings contribute to enhancing the electrochemical performance of sodium-ion batteries.
ENERGY STORAGE MATERIALS
(2021)
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Jingrong Hou et al.
Summary: A novel sodium-deficient NASICON fluorinated phosphate cathode material for sodium ion batteries has been developed in this study, demonstrating high energy and high power densities as well as high sodium diffusion kinetics. Compared to traditional materials, this cathode shows improved performance including higher energy density, enhanced rate capability, and long cycling life. The findings open up promising prospects for high-performance sodium ion batteries by unlocking the potential of NASICON phosphate materials through fluorine substitution.
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Chenchen Wang et al.
Summary: In this study, a layered P2-Na0.612K0.056MnO2 with large-sized K+ riveted in the Na-layers enables 0.9 Na+ (de)insertion with a reversible phase transition of P2-P'2. This cathode material demonstrates the highest specific capacity and energy density based on the redox of Mn3+/Mn4+, with high capacity retention after 100 cycles. This research provides insights into tunable chemical environments of transition-metal oxides for advanced cathode materials and promotes the development of sodium-ion batteries. High capacity and structural stable cathode materials remain challenges for sodium-ion batteries.
NATURE COMMUNICATIONS
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Summary: A novel ternary NASICON-type Na4VMn0.5Fe0.5(PO4)(3)/C cathode is designed with large reversible capacity, high voltage, and good stability. The cathode exhibits excellent rate capacity and cycling durability, outperforming Na4VFe(PO4)(3)/C and Na4VMn(PO4)(3)/C. The synergetic contributions of multimetal ions and facilitated Na+ migration are confirmed, providing new perspectives for high-performance Na-ion batteries.
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Huangxu Li et al.
Summary: This paper introduces three major categories of manganese-based materials, including oxides, Prussian blue analogous, and polyanion type materials, and explains their crystal structure, electrochemical performance, and reaction mechanism in emerging rechargeable battery systems. Key issues encountered by these materials are also discussed.
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