Application of biomass-derived flexible carbon cloth coated with MnO2 nanosheets in supercapacitors

被引:192
作者
He, Shuijian [1 ,2 ]
Chen, Wei [1 ]
机构
[1] Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Electroanalyt Chem, Changchun 130022, Jilin, Peoples R China
[2] Univ Chinese Acad Sci, Beijing 100039, Peoples R China
基金
中国国家自然科学基金;
关键词
Biomass; Binder-free; Flexible; Manganese oxide; Carbon cloth; Supercapacitor; HIGH-PERFORMANCE; MANGANESE OXIDE; SOLID-STATE; ELECTRODE MATERIAL; NANOWIRE ARRAYS; ENERGY-STORAGE; HYBRID FILM; HIGH-POWER; LOW-COST; GRAPHENE;
D O I
10.1016/j.jpowsour.2015.06.051
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Successful application of inexpensive energy storage devices lies in the exploitation of fabrication approaches that are based on cost-efficient materials and that can be easily scaled up. Here, inexpensive textile weaved by natural flax fiber is selected as raw material in preparing flexible and binder-free electrode material for supercapacitors. Although carbon fiber cloth obtained from the direct carbonization of flax textile exhibits a low specific capacitance of 0.78 F g(-1), carbon fiber cloth electrode shows a very short relaxation time of 39.1 m s and good stability with almost 100% capacitance retaining after 104 cycles at 5 A g(-1). To extend the application of the resulting carbon cloth in supercapacitor field, a layer of MnO2 nanosheets is deposited on the surface of carbon fiber via in situ redox reaction between carbon and KMnO4. The specific capacitance of MnO2 reaches 683.73 F g(-1) at 2 A g(-1) and still retains 269.04 F g(-1) at 300 A g(-1), indicating the excellent rate capacitance performance of the carbon cloth/MnO2 hybrids. The present study shows that carbon cloth derived from flax textile can provide a low-cost material platform for the facile, cost-efficient and large scale fabrication of binder-free electrode materials for energy storage devices. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码:150 / 158
页数:9
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