Nickel (Ni)‐rich cathodes are among the most promising cathode materials of lithium batteries, ascribed to their high‐power density, cost‐effectiveness, and eco‐friendliness, having extensive applications from portable electronics to electric vehicles and national grids. They can boost the wide implementation of renewable energies and thereby contribute to carbon neutrality and achieving sustainable prosperity in the modern society. Nevertheless, these cathodes suffer from significant technical challenges, leading to poor cycling performance and safety risks. The underlying mechanisms are residual lithium compounds, uncontrolled lithium/nickel cation mixing, severe interface reactions, irreversible phase transition, anisotropic internal stress, and microcracking. Notably, they have become more serious with increasing Ni content and have been impeding the widespread commercial applications of Ni‐rich cathodes. Various strategies have been developed to tackle these issues, such as elemental doping, adding electrolyte additives, and surface coating. Surface coating has been a facile and effective route and has been investigated widely among them. Of numerous surface coating materials, have recently emerged as highly attractive options due to their high lithium‐ion conductivity. In this review, a thorough and comprehensive review of lithium‐ion conductive coatings (LCCs) are made, aimed at probing their underlying mechanisms for improved cell performance and stimulating new research efforts.

中文翻译：

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用于锂离子电池富镍正极的锂离子导电涂层

富镍（Ni）正极因其高功率密度、成本效益和生态友好性而成为最有前途的锂电池正极材料之一，在便携式电子产品、电动汽车和国家电网等领域有着广泛的应用。它们可以促进可再生能源的广泛应用，从而为现代社会的碳中和和实现可持续繁荣做出贡献。然而，这些正极面临着重大的技术挑战，导致循环性能差和安全风险。潜在的机制是残留的锂化合物、不受控制的锂/镍阳离子混合、严重的界面反应、不可逆相变、各向异性内应力和微裂纹。值得注意的是，随着镍含量的增加，这些问题变得更加严重，并阻碍了富镍正极的广泛商业应用。人们已经制定了各种策略来解决这些问题，例如元素掺杂、添加电解质添加剂和表面涂层。表面涂层是一种简便有效的途径，并在其中得到了广泛的研究。在众多表面涂层材料中，由于其高锂离子电导率，最近成为极具吸引力的选择。在这篇综述中，对锂离子导电涂层（LCC）进行了彻底、全面的综述，旨在探讨其改善电池性能的潜在机制并刺激新的研究工作。