Conductive Polymer Binder-Enabled SiO–SnxCoyCz Anode for High-Energy Lithium-Ion Batteries

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• 作者：Hui Zhao ; Yanbao Fu ; Min Ling ; Zhe Jia ; Xiangyun Song ; Zonghai Chen ; Jun Lu ; Khalil Amine ; Gao Liu
• 刊名：ACS Applied Materials & Interfaces
• 出版年：2016
• 出版时间：June 1, 2016
• 年：2016
• 卷：8
• 期：21
• 页码：13373-13377
• 全文大小：366K
• 年卷期：0
• ISSN：1944-8252

文摘

A SiOSnCoC composite anode is assembled using a conductive polymer binder for the application in next-generation high energy density lithium-ion batteries. A specific capacity of 700 mAh/g is achieved at a 1C (900 mA/g) rate. A high active material loading anode with an areal capacity of 3.5 mAh/cm² is demonstrated by mixing SiOSnCoC with graphite. To compensate for the lithium loss in the first cycle, stabilized lithium metal powder (SLMP) is used for prelithiation; when paired with a commercial cathode, a stable full cell cycling performance with a 86% first cycle efficiency is realized. By achieving these important metrics toward a practical application, this conductive polymer binder/SiOSnCoC anode system presents great promise to enable the next generation of high-energy lithium-ion batteries.