Ternary nickel-cobalt lithium aluminate LiNi Co Al O2 (NCA, ) is an essential cathode material with many vital advantages, such as lower cost and higher specific capacity compared with lithium cobaltate and lithium iron phosphate materials. However, the noticeably irreversible capacity and reduced cycle performance of NCA cathode materials have restricted their further development. To solve these problems and further improve the electrochemical performance, numerous research studies on material modification have been conducted, achieving promising results in recent years. In this work, the progress of NCA cathode materials is examined from the aspects of surface coating and bulk doping. Furthermore, future research directions for NCA cathode materials are proposed.

中文翻译：

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锂离子电池用改性镍钴铝酸锂正极材料综述

三元镍钴铝酸锂 LiNi Co Al O2 (NCA, ) 是一种必不可少的正极材料，与钴酸锂和磷酸铁锂材料相比，具有许多重要优势，例如成本更低、比容量更高。然而，NCA正极材料明显的不可逆容量和循环性能降低限制了它们的进一步发展。为了解决这些问题并进一步提高电化学性能，近年来进行了大量的材料改性研究，取得了可喜的成果。在这项工作中，从表面涂层和体掺杂方面考察了 NCA 正极材料的进展。此外，提出了 NCA 正极材料的未来研究方向。