Architecture of Co-layered double hydroxide nanocages/graphene composite electrode with high electrochemical performance for supercapacitor

• 来源期刊: 能源化学
• 年，卷（期）: 2018,（2）
• 页码范围: 507-512
• 页数: 6页
• 语种: 英文

摘要

A facile hydrolysis method was applied to fabricate high-performance Co-layered double hydroxide (LDH) nanocages/graphene composites for supercapacitors.The materials exhibit enhanced rate capability than the counterpart electrode free of graphene while maintaining a high specific capacitance.In addition,such Co-LDH nanocages/graphene composites display an excellent cycling stability;the capacitance retention of Co-LDH nanocages/graphene composite electrode remains 90.4％ after 10000 cycles at a current density of 2 A g-1.The integration of high capacity of double hydroxide and outstanding conductivity of graphene makes the delicately-designed composites promising candidates for electrode materials for supercapacitors.