伪-Fe2O3@PANI Core鈥揝hell Nanowire Arrays as Negative Electrodes for Asymmetric Supercapacitors

详细信息    查看全文

• 作者：Xue-Feng Lu ; Xiao-Yan Chen ; Wen Zhou ; Ye-Xiang Tong ; Gao-Ren Li
• 刊名：ACS Applied Materials & Interfaces
• 出版年：2015
• 出版时间：July 15, 2015
• 年：2015
• 卷：7
• 期：27
• 页码：14843-14850
• 全文大小：586K
• ISSN：1944-8252

文摘

Highly ordered three-dimensional 伪-Fe₂O₃@PANI core鈥搒hell nanowire arrays with enhanced specific areal capacity and rate performance are fabricated by a simple and cost-effective electrodeposition method. The 伪-Fe₂O₃@PANI core鈥搒hell nanowire arrays provide a large reaction surface area, fast ion and electron transfer, and good structure stability, which all are beneficial for improving the electrochemical performance. Here, high-performance asymmetric supercapacitors (ASCs) are designed using 伪-Fe₂O₃@PANI core鈥搒hell nanowire arrays as anode and PANI nanorods grown on carbon cloth as cathode, and they display a high volumetric capacitance of 2.02 mF/cm³ based on the volume of device, a high energy density of 0.35 mWh/cm³ at a power density of 120.51 mW/cm³, and very good cycling stability with capacitance retention of 95.77% after 10鈥?00 cycles. These findings will promote the application of 伪-Fe₂O₃@PANI core鈥搒hell nanowire arrays as advanced negative electrodes for ASCs.