材料科学
锂(药物)
阴极
晶间腐蚀
镍
烧结
单晶
纳米技术
法律工程学
冶金
微观结构
电气工程
化学
结晶学
工程类
内分泌学
医学
作者
Bianzheng You,Zhixing Wang,Fang Shen,Yijiao Chang,Wenjie Peng,Xinhai Li,Huajun Guo,Qiyang Hu,Chengwei Deng,Sheng Yang,Guochun Yan,Jiexi Wang
标识
DOI:10.1002/smtd.202100234
摘要
Single-crystal nickel-rich cathode materials (SC-NRCMs) are the most promising candidates for next-generation power batteries which enable longer driving range and reliable safety. In this review, the outstanding advantages of SC-NRCMs are discussed systematically in aspects of structural and thermal stabilities. Particularly, the intergranular-crack-free morphology exhibits superior cycling performance and negligible parasitic reactions even under severe conditions. Besides, various synthetic methods are summarized and the relation between precursor, sintering process, and final single-crystal products are revealed, providing a full view of synthetic methods. Then, challenges of SC-NRCMs in fields of kinetics of lithium diffusion and the one particularly occurred at high voltage (intragranular cracks and aggravated parasitic reactions) are discussed. The corresponding mechanism and modifications are also referred. Through this review, it is aimed to highlight the magical morphology of SC-NRCMs for application perspective and provide a reference for following researchers.
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