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|Title:||Highly compressible nitrogen-doped carbon foam electrode with excellent rate capability via a smart etching and catalytic process|
|Citation:||ACS Applied Materials and Interfaces, 2017; 9(18):15477-15483|
|Publisher:||American Chemical Society|
|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|
|Appears in Collections:||Chemical Engineering publications|
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