An efficient method of producing stable graphene suspensions with less toxicity using dimethyl ketoxime

作者：Su Peng; Guo Hui Lin^*; Tian Lei; Ning Sheng Ke

来源：Carbon, 2012, 50(15): 5351-5358.

DOI：10.1016/j.carbon.2012.07.001

A highly stable graphene suspension has been prepared using dimethyl ketoxime (DMKO) as reductant. Nitrogen was doped into the graphene plane at the same time as the graphene oxide (GO) sheets were reduced. X-ray photoelectron spectroscopy indicated that the G/O ratio of graphene was significantly increased after GO was treated with DMKO and the quantity of nitrogen incorporated into the graphene lattice was 3.67 at.%. The electrical conductivity of the graphene paper was found to be similar to 10(2) Sm-1, which was 5 orders of magnitude better than that of GO, and this demonstrated the effective chemical reduction of GO. The mechanism of the chemical reaction of GO with DMKO was also discussed. The as-produced graphene material showed good capacitive behavior and long cycle life with a specific capacitance of similar to 140 F g(-1).

• 出版日期2012-12
• 单位西安工业大学; 西北大学