期刊
NANO LETTERS
卷 14, 期 11, 页码 6704-6710出版社
AMER CHEMICAL SOC
DOI: 10.1021/nl503490h
关键词
silicon monozide conductive polymer binder; stabilized lithium metal powder (SLMP); lithum ion battery
类别
资金
- Vehicle Technologies Office of the U.S. Department of Energy (U.S. DOE) under the Batteries for Advanced Transportation Technologies (BATT) Program
- National Center for Electron Microscopy, Lawrence Berkeley Lab
- U.S. Department of Energy [DE-AC02-05 CH11231]
Silicon alloys have the highest specific capacity when used as anode material for lithium-ion batteries; however, the drastic volume change inherent in their use causes formidable challenges toward achieving stable cycling performance. Large quantities of binders and conductive additives are typically necessary to maintain good cell performance. In this report, only 2% (by weight) functional conductive polymer binder without any conductive additives was successfully used with a micron-size silicon monoxide (SiO) anode material, demonstrating stable and high gravimetric capacity (>1000 mAh/g) for similar to 500 cycles and more than 90% capacity retention. Prelithiation of this anode using stabilized lithium metal powder (SLMP) improves the first cycle Coulombic efficiency of a SiO/NMC full cell from similar to 48% to similar to 90%. The combination enables good capacity retention of more than 80% after 100 cycles at C/3 in a lithium-ion full cell.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据