Recent progress in Co-free, Ni-rich cathode materials for lithium-ion batteries

IF 1.7 4区 化学 Bulletin of the Korean Chemical Society Pub Date : 2023-11-13 DOI:10.1002/bkcs.12799
Sk. Khaja Hussain, Jin Ho Bang
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Abstract

Cobalt (Co) has played an important role in nickel (Ni)-rich cathode materials in terms of improving electrochemical performance, boosting energy density, and improving cycling life for lithium-ion batteries (LIBs). While Co resources are becoming more cost-effective, they pose environmental challenges that can lead to limitations in production and indicate the need for alternative Co-free, Ni-rich cathodes. This review aims to compile some of the concepts established in recent years to overcome the electrochemical disadvantages of Ni-rich cathodes without Co. With the development of strategies involving single-crystals, core-shell structures, and substitution of Co by other metal ions, problems associated with capacity reduction and the underlying structure degradation mechanism have been resolved. Therefore, structural transformation strategies focusing on potential cathodes with improved energy density and lifetime have been pursued for safe LIBs. We also address possible issues and some new insights to improve the performance of Co-free, Ni-rich cathodes for practical applications.

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用于锂离子电池的无钴、富镍正极材料的最新进展
钴(Co)在富镍(Ni)正极材料中发挥着重要作用,可改善锂离子电池(LIB)的电化学性能、提高能量密度和循环寿命。虽然钴资源的成本效益越来越高,但它们带来的环境挑战可能会导致生产受限,并表明需要无钴富镍阴极替代品。本综述旨在梳理近年来为克服不含钴、富镍阴极的电化学缺点而提出的一些概念。随着涉及单晶、核壳结构和用其他金属离子替代 Co 的策略的发展,与容量降低和潜在结构退化机制相关的问题已经得到解决。因此,人们一直在为安全的锂电子电池寻找结构转变策略,重点是具有改进能量密度和寿命的潜在阴极。我们还探讨了在实际应用中提高无钴、富镍阴极性能的可能问题和一些新见解。
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来源期刊
Bulletin of the Korean Chemical Society
Bulletin of the Korean Chemical Society Chemistry-General Chemistry
自引率
23.50%
发文量
182
期刊介绍: The Bulletin of the Korean Chemical Society is an official research journal of the Korean Chemical Society. It was founded in 1980 and reaches out to the chemical community worldwide. It is strictly peer-reviewed and welcomes Accounts, Communications, Articles, and Notes written in English. The scope of the journal covers all major areas of chemistry: analytical chemistry, electrochemistry, industrial chemistry, inorganic chemistry, life-science chemistry, macromolecular chemistry, organic synthesis, non-synthetic organic chemistry, physical chemistry, and materials chemistry.
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