›› 2015, Vol. 24 ›› Issue (4): 47204-047204.doi: 10.1088/1674-1056/24/4/047204
• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇 下一篇
赵文, 何大伟, 王永生, 杜翔, 忻昊
Zhao Wen (赵文), He Da-Wei (何大伟), Wang Yong-Sheng (王永生), Du Xiang (杜翔), Xin Hao (忻昊)
摘要: To improve the specific capacitance and rate capability of electrode material for supercapacitors, three-dimensional graphene/polyaniline (3DGN/PANI) composite is prepared via in situ polymerization on GN hydrogel. PANI grows on the GN surface as a thin film, and its content in the composite is controlled by the concentration of reaction monomer. The specific capacitance of 3DGN/PANI composite containing 10 wt% PANI reaches 322.8 F·g-1 at a current density of 1 A·g-1, nearly twice as large as that of the pure 3DGN (162.8 F·g-1). The capacitance of the composite is 307.9 F·g-1 at 30 A·g-1 (maintaining 95.4%), and 89% retention after 500 cycles. This study demonstrates the exciting potential of 3DGN/PANI with high capacitance, excellent rate capability and long cycling life for supercapacitors.
中图分类号: (Composite materials)