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High-Performance Flexible Solid-State Asymmetric Supercapacitors based on Ordered Mesoporous Cobalt Oxide.
- Source :
- Energy Technology; Apr2017, Vol. 5 Issue 4, p544-548, 5p
- Publication Year :
- 2017
-
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<subscript>3</subscript>O<subscript>4</subscript> 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 Co<subscript>3</subscript>O<subscript>4</subscript> with pore size of 20 nm and activated carbon possesses a specific capacitance of 215 mF cm<superscript>−2</superscript> (at 1.5 mA cm<superscript>−2</superscript>) 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]
- Subjects :
- SUPERCAPACITOR performance
SOLID state electronics
COBALT oxides
Subjects
Details
- Language :
- English
- ISSN :
- 21944288
- Volume :
- 5
- Issue :
- 4
- Database :
- Complementary Index
- Journal :
- Energy Technology
- Publication Type :
- Academic Journal
- Accession number :
- 122452181
- Full Text :
- https://doi.org/10.1002/ente.201600391