Journal
NEW JOURNAL OF CHEMISTRY
Volume 45, Issue 48, Pages 22741-22747Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d1nj04380c
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Funding
- Key Research and Development Program of Hainan Province-Social Development Direction [ZDYF2020204]
- Hainan Provincial Natural Science Foundation of High Level-talent Project [2019RC188]
- National Natural Science Foundation of China [21964007]
- Open Foundation of Key Laboratory of Laser Technology and Optoelectronic Functional Materials of Hainan Province [2020LTOM01]
- Innovation platform for Academicians of Hainan Province
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This paper investigated the capacitive performance of Ag-Co3O4/graphene aerogel, which showed high specific capacitance and good capacity retention after cycling, making it a potential material for supercapacitors with high performance.
In this paper, a Ag-Co3O4/graphene aerogel (GA) composite was prepared by dispersing Ag-modified low crystalline Co3O4 nanowires onto a GA carrier. The capacitive performance of the Ag-Co3O4/GA was studied and the results were compared with those of Co3O4/GA. Ag-functionalized Co3O4/graphene with precursor n(Ag)/n(Co) = 0.51 exhibited the highest specific capacitance (C-s) value of 1180 F g(-1) at a current density of 1 A g(-1), and the capacity retention was 86% after 1000 cycles at 5 A g(-1). Furthermore, the electrochemical impedance spectroscopic results revealed a certain effect of electrolyte ions on the supercapacitive behavior. Ag-functionalized Co3O4/GA is believed to be one of the potential materials for supercapacitors with high performance.
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