期刊
NANO LETTERS
卷 12, 期 5, 页码 2205-2211出版社
AMER CHEMICAL SOC
DOI: 10.1021/nl2039666
关键词
Lithium battery; cathode; polymer; graphene; nanocomposite
类别
资金
- Penn State startup fund
- Assistant Secretary for Energy Efficiency and Renewable Energy, Office of Vehicle Technologies of the U.S. Department of Energy [DE-AC02-05CH11231]
- Batteries for Advanced Transportation Technologies (BATT) Program [6951378]
- U.S. Department of Energy (DOE), Office of Basic Energy Sciences, Division of Materials Sciences and Engineering [KCO20105-FWP12152]
- Pacific Northwest National Laboratory (PNNL)
- DOE by Battelle [DE_AC05-76RL01830]
Electroactive polymers are a new generation of green cathode materials for rechargeable lithium batteries. We have developed nanocomposites combining graphene with two promising polymer cathode materials, poly(anthraquinonyl sulfide) and polyimide, to improve their high-rate performance. The polymer graphene nanocomposites were synthesized through a simple in situ polymerization in the presence of graphene sheets. The highly dispersed graphene sheets in the nanocomposite drastically enhanced the electronic conductivity and allowed the electrochemical activity of the polymer cathode to be efficiently utilized. This allows for ultrafast charging and discharging; the composite can deliver more than 100 mAh/g within just a few seconds.
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