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Type: Journal article
Title: Highly compressible nitrogen-doped carbon foam electrode with excellent rate capability via a smart etching and catalytic process
Author: Xiao, K.
Zeng, Y.
Long, J.
Chen, H.
Ding, L.-X.
Wang, S.
Wang, H.
Citation: ACS Applied Materials and Interfaces, 2017; 9(18):15477-15483
Publisher: American Chemical Society
Issue Date: 2017
ISSN: 1944-8244
Statement of
Kang Xiao, Yanhua Zeng, Jin Long, Hongbin Chen, Liang-Xin Ding, Suqing Wang, and Haihui Wang
Abstract: Freestanding three-dimensional nitrogen-doped carbon foam with large pores is proposed as a promising electrode configuration for elastic electronics. Although it exhibits excellent mechanical performance, the capacitive performances (especially its rate capability) are still unsatisfactory. By using KMnO₄, we demonstrate a smart etching and catalytic process to form highly graphitized and etched nitrogen-doped carbon foam (ENCF) with an exfoliated carbon-shell architecture. These compositional and structural features endow the ENCF electrodes with excellent electron conductivity as well as more ion-accessible electrochemical active sites. Significantly, all-solid-state symmetric supercapacitor devices based on the ENCF electrodes exhibit enhanced specific capacitance and marked high-rate capability. Furthermore, the integrated device has no significant capacity loss under 60% compressive strain.
Keywords: KMnO₄; nitrogen-doped carbon; compressible electrode; symmetric supercapacitor; excellent rate capability
Rights: © 2017 American Chemical Society
DOI: 10.1021/acsami.7b02381
Grant ID: 21406078
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Chemical Engineering publications

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