摘要
高镍含量三元层状材料Li Ni_(1-x-y)Co_xMn_yO_2(NCM)凭借比容量高、成本较低和安全性优良等优势,成为研究的热点,被认为是极具应用前景的锂离子动力电池正极材料。综述了高镍NCM材料的晶体电子结构特征以及镍含量变化对性能的影响,介绍了国内外主要的制备方法和掺杂和包覆改性的机理和特性,并展望了高镍NCM材料未来的应用和发展方向。
Due to their advantages of high specific capacity, low cost and high safety, nickel–rich layered metal oxide materials Li Ni_(1-x-y)Co_xMn_yO_2(NCM) are believed to be a candidate of the potential cathode materials for lithium ion power battery, and have become a research hotspot. The impact of crystal structure, electronic structure, and nickel content on the electrochemical performance of nickel–rich NCM were summarized, the main synthesis methods at home and abroad, the mechanism and characteristics of coating and doping were introduced, and the prospect for nickel–rich NCM cathode materials has been discussed.
引文
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