Electrospun nanofiber of hybrid manganese oxides for supercapacitor: Relevance to mixed inorganic interfaces

被引：55
作者：
Lee, Eunhee
Lee, Taemin
Kim, Byeong-Su [1 ]
机构：
[1] UNIST, Interdisciplinary Sch Green Energy, Ulsan 689798, South Korea
来源：
JOURNAL OF POWER SOURCES | 2014年 / 255卷
基金：
新加坡国家研究基金会;
关键词：
Electrospun nanofiber; Manganese oxides; Mixed phase; Supercapacitor; Three-dimensional (3D) electrode; PERFORMANCE ELECTROCHEMICAL CAPACITORS; ELECTRICAL ENERGY-STORAGE; COMPOSITE ELECTRODES; CARBON NANOFIBERS; GRAPHENE SHEETS; HYDROUS RUO2; FILM; FABRICATION; CONVERSION; BEHAVIOR;
D O I：
10.1016/j.jpowsour.2014.01.011
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：
We prepare electrospun nanofibers (NFs) from a poly(N-vinylpyrrolidone)/manganese (II) acetate composite by electrospinning for application in supercapacitors. As-spun hybrid NFs are calcined at different temperatures to remove the polymer matrix, resulting in inorganic MnOx NFs of variable compositional ratios of Mn3O4 to Mn2O3. Interestingly, the sample of MnOx NFs that is calcined at 500 degrees C exhibits the highest electrochemical performance, reaching a high specific capacitance of 360.7 F g(-1) at a current density of 1 A g(-1). This remarkable performance is attributed to the unique three-dimensional morphology and the reduced interfacial resistance of the mixed-phase MnOx NFs within the matrix electrode and the electrolyte. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：335 / 340
页数：6
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