A novel lithium-ion battery comprising Li-rich@Cr2O5 composite cathode and Li4Ti5O12 anode with controllable coulombic efficiency

Ding, Xiang; Zou, Bang-Kun; Li, Yuxuan; He, Xiaodong; Liao, Jiaying; Tang, Zhongfeng; Shao, Yu; Chen, Chunhua

doi:10.1007/s40843-017-9083-9

Cited by 10 publications

(2 citation statements)

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“…Choosing a proper anode plays a major role in improving the ICE of an LRM full cell. Ding et al [183] suggested that the LRM@ Cr 2 O 5 ||Li 4 Ti 5 O 12 full cell exhibited higher ICE (97.7%) than the LRM@Cr 2 O 5 //graphite counterpart (71.8%). Si-based materials are considered candidates for pairing with LRMs owing to their high capacity.…”

Section: The Practical Application Progress Of Lrm Cathodes In Full Cellmentioning

confidence: 99%

Challenges and Recent Advances in High Capacity Li‐Rich Cathode Materials for High Energy Density Lithium‐Ion Batteries

et al. 2021

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mismatch between the cathode and anode materials (the cathode capacity is nearly an order of magnitude smaller than the anode capacity) has seriously hindered the development of LIBs. [2] Li-rich cathode materials have been regarded as one of the most promising candidates for next-generation cathode materials for rechargeable LIBs owing to their prominent specific capacity. For instance, in Li-rich Mn-based (LRM) cathode materials with the chemical formula xLi 2 MnO 3 ⋅(1 -x)LiTMO 2 (TM = Ni, Mn, Co, etc.), when x = 0.5, in the form of Li 1.2 Mn 0.54 Co 0.13 Ni 0.13 O 2 , the theoretical capacity of the LRM cathode reaches over 250 mA h g −1 for 1 Li + extraction, and ≈378 mA h g −1 for 1.2 Li + extraction. [3] Furthermore, LRM cathodes reduce the use of expensive Co and have the advantages of low cost, environmental friendliness, and high thermal stability. However, LRM cathode materials have inherent issues, such as low initial Coulombic efficiency (ICE), poor rate capacity, and serious voltage fading, which inhibit their further practical applications. [4] These issues need to be immediately addressed to eliminate range and safety anxiety in the electric consumption market. The development of state-of-the-art characterization techniques has brought new understandings of the origins of these problems. [5] In this case, considerable progress has been made in the evolution of LRM cathode structures and its various reaction mechanisms during long-time cycles, the electrochemical activity of anions, and other aspects. In addition, significant advances have also been made in the novel modification methods for promoting the electrochemical performances of LRM cathode materials as well as other branches of Li-rich cathode materials. Herein, we present a comprehensive review of the recent challenges and prospects in high-capacity Li-rich cathode materials. This paper aims to offer a global and critical perspective on Lirich cathode materials for LIBs, as shown in Figure 1, including an in-depth evaluation of degradation mechanisms, the prevailing modification methods and development trends, application, and future opportunities for LRM electrode materials in full-cells and future solid-state batteries. We intend to provide perspectives on the practical development and application of Li-rich cathode materials have attracted increasing attention because of their high reversible discharge capacity (>250 mA h g −1 ), which originates from transition metal (TM) ion redox reactions and unconventional oxygen anion redox reactions. However, many issues need to be addressed before their practical applications, such as their low kinetic properties and inefficient voltage fading. The development of cutting-edge technologies has led to cognitive advances in theory and offer potential solutions to these problems. Herein, a recent in-depth understanding of the mechanisms and the frontier electrochemical research progress of Li-rich cathodes are reviewed. In addition, recent advances associated with various strategies to promot...

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Section: The Practical Application Progress Of Lrm Cathodes In Full Cellmentioning

confidence: 99%

Challenges and Recent Advances in High Capacity Li‐Rich Cathode Materials for High Energy Density Lithium‐Ion Batteries

et al. 2021

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“…Other innovative approaches.-Except for these basic and common strategies, researchers have found many other innovative approaches. 160 The following lists three more distinctive methods.…”

Section: Strategies For High Rate Capacity Performance Improvementmentioning

confidence: 99%

Review—Key Strategies to Increase the Rate Capacity of Cathode Materials for High Power Lithium-Ion Batteries

Sun

Guo

et al. 2020

J. Electrochem. Soc.

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Realizing ultra-fast charge and discharge of lithium-ion batteries (LIBs) is one of the effective ways to promote the popularity of electric vehicles, solve energy and environmental problems. A lot of studies have shown that low conductivity and low lithium-ion diffusivity are the major limiting factors for the rate performance of cathode. However, there is no systematic review on the methods to improve the rate performance of cathode for LIBs. Hence this review ground-breakingly summarizes a series of key strategies and their electrochemical mechanisms to increase the rate capacity of cathode materials. The limiting factors for the development of LIBs fast charging are introduced. It analyzes the working mechanisms of the nanostructure and micronanostructures. The influences of carbon coating with different carbon sources are introduced and compared in detail. The specific mechanisms and research results of surface coating modification and doping strategies in LiFePO 4 , layered structure cathode, and spinel structure cathode are reviewed. Moreover, innovative approaches such as spinel-layered composites preparation, structuralgradient design, and photo-accelerated fast charging are also provided. Finally, some existing challenges and development directions in the future are discussed.

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Enhanced Electrochemical Performances of Ni Doped Cr8O21 Cathode Materials for Lithium-ion Batteries

Tang,

Liu,

et al. 2023

J. Wuhan Univ. Technol.-Mat. Sci. Edit.

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A novel lithium-ion battery comprising Li-rich@Cr2O5 composite cathode and Li4Ti5O12 anode with controllable coulombic efficiency

Abstract: Through meticulous design, a Li-lacking Cr

Cited by 10 publications

References 40 publications

Challenges and Recent Advances in High Capacity Li‐Rich Cathode Materials for High Energy Density Lithium‐Ion Batteries

Challenges and Recent Advances in High Capacity Li‐Rich Cathode Materials for High Energy Density Lithium‐Ion Batteries

Review—Key Strategies to Increase the Rate Capacity of Cathode Materials for High Power Lithium-Ion Batteries

Enhanced Electrochemical Performances of Ni Doped Cr8O21 Cathode Materials for Lithium-ion Batteries

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