1. High-Performance Flexible Solid-State Asymmetric Supercapacitors based on Ordered Mesoporous Cobalt Oxide.
- Author
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Zheng, Mingbo, Li, Lulu, Gu, Peng, Lin, Zixia, Du, Weimin, Xue, Huaiguo, and Pang, Huan
- Subjects
SUPERCAPACITOR performance ,SOLID state electronics ,COBALT oxides - Abstract
Asymmetric supercapacitors (ASCs) have attracted growing interest and attention in the field of supercapacitors owing to their high energy density and power density. In this work, ordered mesoporous Co
3 O4 samples with different pore sizes (ca. 20 nm and ca. 70 nm) are prepared via a hard template method. Flexible solid-state ASC devices based on mesoporous Co3 O4 with pore size of 20 nm and activated carbon possesses a specific capacitance of 215 mF cm−2 (at 1.5 mA cm−2 ) and show excellent cycling performance. Electrochemical tests reveal that the mesoporous material with a larger specific surface area, that is, a smaller primary particle size, is more suitable for solid-state ASC device. The results provide a potential electrode material for ACSs. [ABSTRACT FROM AUTHOR]- Published
- 2017
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