IN SITU HYDROTHERMAL SYNTHESIS OF MnO2 NANOWIRES/WOOD DERIVED ACTIVATED CARBON HOLLOW FIBERS COMPOSITE AND ITS APPLICATION IN SUPERCAPACITOR
文献类型： 外文期刊
第一作者： Ma, Liyan
作者： Ma, Liyan;Li, Jianing;Wang, Lina;Ma, Xiaojun
作者机构：
关键词： Wood waste; MnO2 nanowires; activated carbon hollow fibres; supercapacitors
期刊名称：WOOD RESEARCH （ 影响因子：1.139； 五年影响因子：1.184 ）
ISSN： 1336-4561
年卷期： 2020 年 65 卷 5 期
页码：
收录情况： SCI
摘要： Composite electrode material composed of MnO2 nanowires and wood-derived activated carbon hollow fibres (Mn@ACHFs) was successfully fabricated by in situ hydrothermal method. In this work, MnO2 nanowires were developed by adjusting the mass ratio of potassium permanganate and wood activated carbon hollow fibres (ACHF). The ACHF with hierarchical porous structure served not only as the support for the growth of MnO2 particles, but also as the electric double layer capacitance for the composite electrode. The Mn@ACHFs exhibited an outstanding specific capacitance of 420 F.g(-1) at 1 A.g(-1) and cycle stability with 99.7% capacitance retention after 5000 cydes at 5 A.g(-1). Electrochemical characteristics of the prepared composites are attributed to the synergetic effect of the double layer capacitance of the hierarchical porous ACHF and the layered structure of MnO2, which can efficiently enhance the conductivity and stability of the electrodes.
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