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A High‐Energy‐Density Asymmetric Microsupercapacitor for Integrated Energy Systems
Author(s) -
Wang Fengmei,
Zhan Xueying,
Cheng Zhongzhou,
Wang Qisheng,
Wang Zhenxing,
Wang Feng,
Xu Kai,
Huang Yun,
Safdar Muhammad,
He Jun
Publication year - 2015
Publication title -
advanced electronic materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.25
H-Index - 56
ISSN - 2199-160X
DOI - 10.1002/aelm.201400053
Subject(s) - materials science , supercapacitor , energy density , carbon fibers , power density , electrode , nanotechnology , capacitance , power (physics) , optoelectronics , engineering physics , composite material , physics , quantum mechanics , composite number
An asymmetric micrometer‐sized pseudosupercapacitor is fabricated by growing V 2 O 5 honeycomb nanostructures onto micro‐carbon fibers, which serve as the positive electrode. WO 3 /PPy core/shell nanoarrays on micro‐carbon fibers serve as the negative electrode. The all‐solid‐state pseudosupercapacitor shows a volumetric specific capacitance as high as ≈56 F cm −3 and a volumetric energy density of ≈31.1 mWh cm −3 while maintaining a high power density.