锰对 LiNiO2 的温度替代效应

IF 2.2 4区工程技术 Q3 ELECTROCHEMISTRY

Journal of electrochemical science and technology Pub Date : 2023-12-11 DOI:10.33961/jecst.2023.00787

Seungjae Jeon, Sk. Khaja Hussain, Jin Ho Bang

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引用次数: 0

摘要

尽管锰（Mn）在无钴富镍阴极材料中发挥着重要作用，但现有关于锰替代钴的效果的报告并不一致。在这项研究中，我们分析了由 Li(Ni 1- x Mn x )O 2 (LNMO) 组成的阴极的性能。锰的替代产生了有利和不利的结果。我们发现，影响性能的各种效应（磁沮驱动的锂/镍混合、晶粒生长抑制和锂插入/萃取动力学延迟）之间存在复杂的相互作用，并且与煅烧温度密切相关。这表明，建立最佳反应温度对于开发高性能 LNMO 非常重要。

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Temperature-Dependent Mn Substitution Effect on LiNiO2

Despite the important role of manganese (Mn) in cobalt-free, Ni-rich cathode materials, existing reports on the effects of Mn as a substitute for cobalt are not consistent. In this work, we analyzed the performance of cathodes comprised of Li(Ni 1– x Mn x )O 2 (LNMO). Both beneficial and detrimental results occurred as a result of the Mn substitution. We found that a complex interplay of effects (Li/Ni mixing driven by magnetic frustration, grain growth suppression, and retarded lithium insertion/extraction kinetics) influenced the performance and was intimately related to calcination temperature. This indicates the importance of establishing an optimal reaction temperature for the development of high-performance LNMO

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来源期刊

Journal of electrochemical science and technology ELECTROCHEMISTRY-

CiteScore

6.30

自引率

8.10%

发文量

期刊介绍： Covering fields: - Batteries and Energy Storage - Biological Electrochemistry - Corrosion Science and Technology - Electroanalytical Chemistry and Sensor Technology - Electrocatalysis - Electrochemical Capacitors & Supercapcitors - Electrochemical Engineering - Electrodeposition and Surface Treatment - Environmental Science and Technology - Fuel Cells - Material Electrochemistry - Molecular Electrochemistry and Organic Electrochemistry - Physical Electrochemistry - Solar Energy Conversion and Photoelectrochemistry