摘要
MnO2作为典型的超级电容器赝电容材料具有成本低、比电容高等优点,但其导电性能差、工作过程中结构不稳定等缺点严重影响其电化学性能。目前,将MnO2与其它材料复合制备二元复合材料是改善其电化学性能的有效手段之一。本文综述了基于超级电容器的MnO2与双电层、MnO2与赝电容二元复合材料国内外的研究进展,对比分析了MnO2二元复合材料的电化学性能。综合分析表明,MnO2与赝电容电极材料复合能够通过协同作用,进一步提高复合材料电化学性能;"核-壳"异质结构可以起到缓冲与支撑作用,增加复合材料的结构稳定性。因此,构建"核-壳"结构的MnO2与赝电容复合电极材料会成为今后的研究热点。
As a typical pseudocapacitor material for supercapacitors, MnO2 has the advantages of low cost and high specific capacitance, but its electrochemical performance is degraded by poor conductivity and structural instability in the working process. At present, the electrochemical performance of MnO2 is improved by binary composites. This paper reviews the research progress on supercapacitor-based MnO2 and dual-layered MnO2, and pseudocapacitor binary composite materials.After analyzing and comparing the electrochemical performances of MnO2 binary composites, it is proposed that composite MnO2 and pseudo-capacitive materials, or composites with coreshell heterogeneous structures, are competitive candidates for improving the electrochemical performance.
作者
侯朝霞
王晓慧
屈晨滢
王健
HOU Zhaoxia;WANG Xiaohui;QU Chenying;WANG Jian(Laboratory of Micro-Nano Materials Research and Development,School of Mechanical Engineering,Shenyang University,Shenyang 110044,Liaoning,China)
出处
《储能科学与技术》
CAS
CSCD
2020年第3期797-806,共10页
Energy Storage Science and Technology
基金
国家自然科学基金(51472166)
辽宁省“百千万人才工程”资助项目。
关键词
二氧化锰
复合材料
超级电容器
manganese dioxide
composite materials
supercapacitor
