石墨烯
超级电容器
材料科学
聚苯胺
氧化物
热解
聚合
原位聚合
电化学
氧化石墨烯纸
化学工程
电容
复合数
氮气
电极
复合材料
纳米技术
化学
聚合物
有机化学
冶金
物理化学
工程类
作者
Wendong Wang,Xiujun Lin,Haibo Zhao,Qiu‐Feng Lü
标识
DOI:10.1016/j.jaap.2016.04.006
摘要
Three polyaniline/graphene oxide (PANI/GO) composites were fabricated by means of an in-situ polymerization of aniline monomers in the presence of graphene oxide (GO). And then, nitrogen-doped graphene was prepared by pyrolysis of the PANI/GO composite. The structures and morphologies of the samples were characterized by using different techniques, and the electrochemical performances of the nitrogen-doped graphene samples were further investigated. When PANI/GO10 (the GO feed content in PANI/GO is 10 wt.%) was used as a precursor, and the pyrolysis temperature is 800 °C, nitrogen content of the as-prepared nitrogen-doped graphene (i.e., NG10-800) is 9.2 at.%. The specific capacitance of NG10-800 is up to 206 F g−1 at a current density of 1 A g−1, indicating an excellent electrochemical performance. After 1000 cycles at a scan rate of 50 mV s−1, the capacitance retention of NG10-800 is about 92.5% of the initial value, suggesting an excellent cycling stability.
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