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Nanostructured Co3O4 for achieving high-performance supercapacitor.
- Source :
-
Materials Letters . Feb2021, Vol. 285, pN.PAG-N.PAG. 1p. - Publication Year :
- 2021
-
Abstract
- • MOF-derived porous Co 3 O 4 was obtained. • Simple calcination treatment was used to construct the porous structure. • Nanoporous Co 3 O 4 electrode with high specific capacitance was designed. Supercapacitors with cobalt oxide (Co 3 O 4) electrode are a kind of strong candidates for achieving high-capacity storage energy devices. However, the reported capacitances lower than the theoretical values are undesirable. In this study, a high-performance supercapacitor by using the Co 3 O 4 electrode with a porous nanostructure is enabled by the calcination treatment of metal organic framework ZIF-67. Of note, the resulting Co 3 O 4 electrodes shows high specific capacitance of 1015 F/g under a current density of 1 A/g. Additionally, it exhibits energy density of 36.6 Wh/kg at a power density of 189.5 W/kg and maintains capacitance retention of 78.2% after 5000 cycles at 8 A/g. The strategy proposed here provides a good way to synthesize nanostructured Co 3 O 4 , a candidate for constructing high-capacitance energy storage devices. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 0167577X
- Volume :
- 285
- Database :
- Academic Search Index
- Journal :
- Materials Letters
- Publication Type :
- Academic Journal
- Accession number :
- 148121808
- Full Text :
- https://doi.org/10.1016/j.matlet.2020.129101