Issue 44, 2017

Fiber-based all-solid-state asymmetric supercapacitors based on Co3O4@MnO2 core/shell nanowire arrays

Abstract

With the rapid development of portable and wearable electronics, fiber-based supercapacitors as one type of flexible and lightweight energy storage devices have attracted intensive attention. However, most of the reported fiber-based supercapacitors are based on a symmetric device configuration, whose narrow operating voltage window and low energy densities as well as the poor electrochemical performance hinder the practical applications of fiber-based supercapacitors. In this report, we developed a fiber-based flexible all-solid-state asymmetric supercapacitor, using nickel wire/Co3O4@MnO2 nanowire arrays and carbon fibers/graphene as the two electrodes. The fiber-based all-solid-state asymmetric supercapacitor exhibited remarkable electrochemical performance with high capacitance (13.9 mF cm−2 at 0.1 mA cm−2) and high cycling stability (82% retention, even after 1000 cycles at 0.6 mA cm−2). The obtained fiber-based supercapacitor is a promising power source candidate for flexible, portable and wearable electronics.

Graphical abstract: Fiber-based all-solid-state asymmetric supercapacitors based on Co3O4@MnO2 core/shell nanowire arrays

Supplementary files

Article information

Article type
Communication
Submitted
08 Sep 2017
Accepted
17 Oct 2017
First published
17 Oct 2017

J. Mater. Chem. A, 2017,5, 22939-22944

Fiber-based all-solid-state asymmetric supercapacitors based on Co3O4@MnO2 core/shell nanowire arrays

X. Niu, G. Zhu, Z. Yin, Z. Dai, X. Hou, J. Shao, W. Huang, Y. Zhang and X. Dong, J. Mater. Chem. A, 2017, 5, 22939 DOI: 10.1039/C7TA07899D

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