In-situ growth of nanowire WO2.72 on carbon cloth as a binder-free electrode for flexible asymmetric supercapacitors with high performance

论文摘要

For the first time,WO2.72 nanowires were in-situ grown on carbon cloth by a simple solvothermal reaction.The nanowire WO2.72/carbon cloth(NW WO2.72/CC) electrode showed good electrochemical performance with specific capacitance（Cs） reaching up to 398 F g-1 at a current density of 2 A g-1.The capacitance of 240 F g-1 was retained at a high current density of 16 A g-1.To further evaluate the energy storage performance,flexible asymmetric supercapacitors（FASCs） were fabricated using the activated carbon/carbon cloth（AC/CC） as negative electrode and NW WO2.72/CC as positive electrode,respectively.The FASCs delivered a high energy density of 28 Wh kg-1 at a power density of 745 W kg-1 and 13 Wh kg-1 even at a high power density of 22.5 k W kg-1.More impressively,81% of the specific capacitance of the FASCs was retained after 10,000 cycles,indicating excellent cycle stability.This work indicates the NW WO2.72/CC holds a great potential for application in energy storage devices.

论文目录

• 1. Introduction
• 2. Experimental
•   2.1. Preparation of NW WO2.72/CC
•   2.2. Preparation of polymer gel electrolyte
•   2.3. Preparation of activated carbon electrode and fabrication of flexible asymmetric supercapacitors
•   2.4. Characterization of materials
•   2.5. Electrochemical measurements
• 3. Results and discussion
•   3.1. Materials characterization
•   3.2. Electrochemical properties of NW WO2.72/CC electrodes
• 4. Conclusions

文章来源

类型: 期刊论文

作者: Xiao Huang,Zhiguo Zhang,Huan Li,Hongxia Wang,Tingli Ma

来源: Journal of Energy Chemistry 2019年02期

年度: 2019

分类: 工程科技Ⅰ辑,工程科技Ⅱ辑

专业: 材料科学,电力工业

单位: Department of Life Science and System Engineering,Kyushu Institute of Technology,School of Chemistry,Physics and Mechanical Engineering,Queensland University of Technology,School of Petroleum and Chemical Engineering,Dalian University of Technology

基金: supported by the Grant-in-Aid for Scientific Research (KAKENHI) Program,Japan (C,Grant Number 15K05597),Takahashi Industrial and Research Center for Solar Light Energy Conversion,Kyushu Institute of Technology

分类号: TB383.1;TM53

页码: 58-64

总页数: 7

文件大小: 919K

下载量: 18