Synthesis and electrochemical properties of three-dimensional graphene/polyaniline composites for supercapacitor electrode materials

• 作者: 何大伟 忻昊 杜翔 王永生 赵文
• 来源期刊: 中国物理B（英文版）
• 关键词: graphene/polyaniline composites electrochemical property three-dimensional graphene
• 年，卷（期）: 2015,（4）
• 页码范围: 047204-1-047204-6
• 页数: 1页
• 语种: 英文
• DOI: 10.1088/1674-1056/24/4/047204

摘要

To improve the specific capacitance and rate capability of electrode material for supercapacitors, a 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 the reaction monomer. The specific capacitance of the 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.