期刊
ADVANCED FUNCTIONAL MATERIALS
卷 23, 期 7, 页码 846-853出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.201202412
关键词
carbon nanotube films; current collectors; lightweight materials; flexible materials; lithium ion batteries
类别
资金
- National Basic Research Program of China [2012CB932301]
- NSFC [51102146, 50825201]
Carbon nanotube (CNT) current collectors with excellent flexibility, extremely low density (0.04 mg cm2), and tunable thickness are fabricated by cross-stacking continuous CNT films drawn from super-aligned CNT arrays. Compared with metal current collectors, better wetting, stronger adhesion, greater mechanical durability, and lower contact resistance are demonstrated at the electrode/CNT interface. Electrodes with CNT current collectors show improvements in cycling stability, rate capability, and gravimetric energy density over those with metal current collectors. These results suggest that CNT films can function as a promising type of current collector for lightweight and flexible lithium ion batteries with high energy density.
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