通过原位操作分析全面了解锂离子电池富镍阴极材料的元素掺杂和替代情况

IF 11.1 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY
Yun Seong Byeon, Wontae Lee, Sangbin Park, Dongil Kim, Jaewoo Jung, Min-Sik Park, Won-Sub Yoon
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引用次数: 0

摘要

本综述探讨了高能锂离子电池(LIB)开发过程中遇到的挑战和取得的进展,尤其关注富镍正极材料的电化学和结构稳定性。尽管这些正极材料具有提高锂离子电池能量密度的潜力,但在循环过程中会遇到不可逆相变和结构退化等问题,最终影响其电化学性能。元素掺杂/替代已成为应对这些挑战的可行策略。然而,其性能提升的确切机制仍不清楚。本研究的目的是通过采用原位操作分析方法,阐明富镍阴极材料中掺杂和取代引发的复杂反应机制,从而揭示它们在循环过程中对电化学行为和结构完整性的影响。这项综合研究旨在阐明元素掺杂或取代基在富镍阴极材料晶体结构中的作用,从而为高能量 LIB 中阴极材料的结构工程提供有价值的见解。通过阐明这些错综复杂的机制,本综述为今后的研究提供了实用的路线图,并通过指导先进锂电池开发过程中的材料设计和优化策略,为锂电池技术做出了重要贡献。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Comprehensive Understanding of Elemental Doping and Substitution of Ni-Rich Cathode Materials for Lithium-Ion Batteries via In Situ Operando Analyses

Comprehensive Understanding of Elemental Doping and Substitution of Ni-Rich Cathode Materials for Lithium-Ion Batteries via In Situ Operando Analyses
This review explores the challenges and advancements in the development of high-energy lithium-ion batteries (LIBs), particularly focusing on the electrochemical and structural stability of Ni-rich cathode materials. Despite their potential to increase the energy density of LIBs, these cathode materials encounter issues such as irreversible phase transitions and structural degradation during cycling, which ultimately affect their electrochemical performance. Elemental doping/substitution has emerged as promising strategies to address these challenges. However, the precise mechanisms underlying their performance enhancement remain unclear. The objective is to elucidate the complex reaction mechanisms triggered by doping and substitution in Ni-rich cathode materials by employing in situ operando analyses to uncover their effects on electrochemical behavior and structural integrity during cycling. This comprehensive investigation aims to clarify the roles of elemental dopants or substituents in the crystal structures of Ni-rich cathode materials, thereby offering valuable insights for the structural engineering of cathode materials in high-energy LIBs. By elucidating these intricate mechanisms, this review provides a practical roadmap for future research and significantly contributes to LIB technology by guiding material design and optimization strategies in the development of advanced LIBs.
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来源期刊
CiteScore
14.00
自引率
2.40%
发文量
0
期刊介绍: Small Science is a premium multidisciplinary open access journal dedicated to publishing impactful research from all areas of nanoscience and nanotechnology. It features interdisciplinary original research and focused review articles on relevant topics. The journal covers design, characterization, mechanism, technology, and application of micro-/nanoscale structures and systems in various fields including physics, chemistry, materials science, engineering, environmental science, life science, biology, and medicine. It welcomes innovative interdisciplinary research and its readership includes professionals from academia and industry in fields such as chemistry, physics, materials science, biology, engineering, and environmental and analytical science. Small Science is indexed and abstracted in CAS, DOAJ, Clarivate Analytics, ProQuest Central, Publicly Available Content Database, Science Database, SCOPUS, and Web of Science.
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