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首页> 外文期刊>Coatings >A Comparative Review of Metal Oxide Surface Coatings on Three Families of Cathode Materials for Lithium Ion Batteries
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A Comparative Review of Metal Oxide Surface Coatings on Three Families of Cathode Materials for Lithium Ion Batteries

机译：用于锂离子电池三个阴极材料的金属氧化物表面涂层的比较述评

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摘要

In the recent years, lithium-ion batteries have prevailed and dominated as the primary power sources for mobile electronic applications. Equally, their use in electric resources of transportation and other high-level applications is hindered to some certain extent. As a result, innovative fabrication of lithium-ion batteries based on best performing cathode materials should be developed as electrochemical performances of batteries depends largely on the electrode materials. Elemental doping and coating of cathode materials as a way of upgrading Li-ion batteries have gained interest and have modified most of the commonly used cathode materials. This has resulted in enhanced penetration of Li-ions, ionic mobility, electric conductivity and cyclability, with lesser capacity fading compared to traditional parent materials. The current paper reviews the role and effect of metal oxides as coatings for improvement of cathode materials in Li-ion batteries. For layered cathode materials, a clear evaluation of how metal oxide coatings sweep of metal ion dissolution, phase transitions and hydrofluoric acid attacks is detailed. Whereas the effective ways in which metal oxides suppress metal ion dissolution and capacity fading related to spinel cathode materials are explained. Lastly, challenges faced by olivine-type cathode materials, namely; low electronic conductivity and diffusion coefficient of Li ion, are discussed and recent findings on how metal oxide coatings could curb such limitations are outlined.
机译：近年来，锂离子电池普遍存在，作为移动电子应用的主要电源。同样，它们在交通的电力资源和其他高级应用中的用途在某种程度上受到阻碍。结果，应开发基于最佳性能的阴极材料的锂离子电池的创新制造，因为电池的电化学性能主要取决于电极材料。作为升级锂离子电池的升级方式的元素掺杂和涂层已经获得了兴趣，并且已经改变了大部分常用的阴极材料。这导致Li-离子的渗透，离子迁移率，导电性和可循环性，与传统的母体材料相比，容量褪色较小。本文综述了金属氧化物作为涂层的作用和效果，用于改善锂离子电池中的阴极材料。对于分层阴极材料，详细说明金属离子溶解，相转变和氢氟酸发作的金属氧化物涂层如何扫描的清晰评价。然而，解释了金属氧化物抑制金属离子溶解和与尖晶石阴极材料相关的能力衰落的有效方式。最后，橄榄石型阴极材料面临的挑战，即;讨论了Li离子的低电子导电性和扩散系数，并概述了金属氧化物涂层如何抑制这种限制的研究。

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