Surface heterogeneity in Li0.5CoO2 within a porous composite electrode
Surface heterogeneity in Li0.5CoO2 within a porous composite electrode
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多孔复合电极内 Li0.5CoO2 的表面异质性
DOI：
10.1039/c8cc03238f
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发表时间：
2018-08-04
影响因子：
4.9
通讯作者：
Zhou, Jigang
中科院分区：
文献类型：
--
作者：
Lu, Mi;Mao, Yongzhi;Zhou, Jigang
x射线光电发射电子显微镜（X-PEEM）显示，热分解前后充满电的LiCoO2 （LCO）复合电极的表面相非均质性强烈依赖于粘结剂和碳添加剂的分布，而与LCO的晶面和尺寸无关。获得的新见解加深了对真实复合电极热稳定性的理解，这将对进一步开发长寿命和安全的锂离子电池阴极有价值。
Surface phase heterogeneity within a fully charged LiCoO2 (LCO) composite electrode before and after thermal decomposition has been shown to strongly depend on the distribution of the binder and carbon additives, but be independent of the crystalline facet and size of LCO, as revealed by X-ray photoemission electron microscopy (X-PEEM). The obtained new insights deepen the understanding of thermal stability in a real composite electrode, which would be valuable for further development of long-life and safe cathodes for lithium-ion batteries.