物理化学学报 >> 2017, Vol. 33 >> Issue (10): 2035-2041.doi: 10.3866/PKU.WHXB201705182

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聚苯胺-还原氧化石墨烯复合材料的比电容及超级电容性能

曾向东,赵晓昱*(),韦会鸽,王彦飞,唐娜,沙作良   

  • 收稿日期:2017-02-09 发布日期:2017-07-17
  • 通讯作者: 赵晓昱 E-mail:xyz@tust.edu.cn
  • 基金资助:
    国家自然科学基金(21503146)

Specific Capacitance and Supercapacitive Properties of Polyaniline-Reduced Graphene Oxide Composite

Xiang-Dong ZENG,Xiao-Yu ZHAO*(),Hui-Ge WEI,Yan-Fei WANG,Na TANG,Zuo-Liang SHA   

  • Received:2017-02-09 Published:2017-07-17
  • Contact: Xiao-Yu ZHAO E-mail:xyz@tust.edu.cn
  • Supported by:
    the National Natural Science Foundation of China(21503146)

摘要:

通过同步还原聚苯胺(PANI)-氧化石墨烯(GO)复合物制备得到了聚苯胺-还原氧化石墨烯(PANI-rGO)。由于复合材料中PANI提供了氧化还原反应的电荷,使得PANI-rGO复合材料具有较大的比电容。通过扫描电子显微镜(SEM),紫外-可见光谱和热重量分析法(TGA)对复合物进行了结构和形态的分析。复合材料的形态呈薄片状,聚苯胺是均匀地包裹在氧化石墨烯上的。当电流密度为20 A·g-1时,PANI-rGO复合材料的比电容可高达1069 F·g-1(1.71 F·cm-2),是PANI-GO复合材料的五倍,这是因为复合材料中还原氧化化石墨烯的大比表面和高电导性所引起的。

关键词: 聚苯胺-还原氧化石墨烯, 聚苯胺-氧化石墨烯, 比电容, 操作电压

Abstract:

Flaky polyaniline-reduced graphene oxide (PANI-rGO) composites have larger specific capacitance due to the improved redox charge of PANI in the composites, fabricated by simultaneous reduction of PANI-GO. The structural and morphological analyses were carried out using scanning electron microscopy, UV-Vis spectroscopy, and thermogravimetry. The results showed that the composites are flaky in shape. PANI is uniformly coated on GO, and PANI-rGO has specific capacitance as high as 1069 F·g-1 (1.71 F·cm-2) at a current density of 20 A·g-1, 5 times higher than PANI-GO; this is caused by the large surface and conductivity of the rGO in the composite.

Key words: Polyaniline-reduced graphene oxide, Polyaniline-graphene oxide, Specific capacitance, Operating voltage

MSC2000: 

  • O646