电池2026，Vol.56Issue(2)：345-351,7.DOI:10.19535/j.1001-1579.2026.02.008
K+柱撑石墨烯包覆LiCoO2界面的性能
Performance of potassium-ion pillared graphene-coated LiCoO2 interface
摘要
Abstract
LiCoO2 faces interfacial failure challenges during the cycling process.Constructing a surface coating layer can enhance the Coulombic efficiency and cycling stability of LiCoO2.Microscopic interaction mechanism on the coating-electrode interface is still unrevealed,resulting in the lack of a theoretical basis for the design of coating layers.The interfaces of graphene-coated and K+pillared graphene-coated LiCoO2 are respectively constructed.The electrical performance and Li+transport performance at the interface between the coating layers and LiCoO2 are studied by first-principles calculation method.Both of graphene-coated and K+pillared graphene-coated LiCoO2 interfaces exhibit high electronic conductivity,the N-type Schottky barrier is only 0.06 eV.The K+pillaring not only increase the interlayer spacing of graphene,but also enhance the electrical conductivity.The K+pillared graphene coating of LiCoO2 is more conducive to electron transfer and rapid Li+diffusion at the coating interface.关键词
钴酸锂/K+柱撑石墨烯/表面包覆/界面/第一性原理/Li+扩散Key words
LiCoO2/K+pillared graphene/surface coating/interface/first-principle/Li+diffusion分类
信息技术与安全科学引用本文复制引用
胡玉霞,薛红涛,刘卯成,汤富领..K+柱撑石墨烯包覆LiCoO2界面的性能[J].电池,2026,56(2):345-351,7.基金项目
国家自然科学基金(52062030) （52062030）
