Li-Ion Battery Cathodes: Enhancing Interfacial Bonding between Anisotropically Oriented Grains Using a Glue-Nanofiller for Advanced Li-Ion Battery Cathode (Adv. Mater. 23/2016)

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• 作者：Hyejung Kim ; Sanghan Lee ; Hyeon Cho ; Junhyeok Kim ; Jieun Lee ; Suhyeon Park ; Se Hun Joo ; Su Hwan Kim ; Yoon-Gyo Cho ; Hyun-Kon Song ; Sang Kyu Kwak and Jaephil Cho
• 刊名：Advanced Materials
• 出版年：2016
• 出版时间：June 15, 2016
• 年：2016
• 卷：28
• 期：23
• 页码：4704
• 全文大小：2321K
• ISSN：1521-4095

文摘

The formation of a spinel Li_xCoO₂ layer in a Ni-rich secondary particle for lithium-ion batteries is reported by S. K. Kwak, J. Cho, and co-workers on page 4705, who find that the spinel-like Li_xCoO₂ layer, between layered primary particles, can enhance the mechanical strength of secondary particles by enhancing the interfacial binding energy among the grains. Moreover, the layer can effectively protect the unstable surface of the primary particles and offers a fast electron–ion pathway, resulting in overall enhancements of stability and kinetics in battery performance.