期刊
ACS APPLIED MATERIALS & INTERFACES
卷 8, 期 21, 页码 13373-13377出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.6b00312
关键词
lithium-ion battery; high capacity anode; conductive polymer binder; prelithiation; practical application
资金
- Vehicle Technologies Office of the U.S. Department of Energy (U.S. DOE)
- Director Office of Science, Office of Basic Energy Sciences, of the U.S. Department of Energy [DE-AC02-05 CH11231]
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/cm(2) 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.
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