期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 886, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2021.161171
关键词
Polypyrrole; Cobalt carbonate hydroxide; Carbon cloth; Supercapacitor
资金
- Priority Research Center Program through the National Research Foundation of Korea (NRF) - Ministry of Education [2021R1A6A1A03038858]
- Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Science and ICT (MSIT) [2021R1F1A1063291]
- National Research Foundation of Korea [2021R1F1A1063291, 2021R1A6A1A03038858] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
PPy@CoCH/CC composites with unique 3D hierarchical nanostructure synthesized by a simple and cost-effective hydrothermal method exhibit enhanced electrochemical performances, high specific capacitance, and good cycling performance. Additionally, symmetric supercapacitors fabricated using these composites as both positive and negative electrode deliver a high energy density at a power density of 1600 W.kg(-1).
Polypyrrole decorated cobalt carbonate hydroxide on carbon cloth (PPy@CoCH/CC) has been synthesized by a simple and cost-effective hydrothermal method. The prepared PPy@CoCH/CC exhibits unique 3D hierarchical nanostructure, showing uniform decoration of PPy nanoparticles on CoCH nanosheets. The PPy@CoCH/CC composites exhibit enhanced electrochemical performances due to the enhanced electrical conductivity, pseudocapcitive behavior, and efficient ion transport of PPy. Specifically, The PPy@CoCH/CC composites show high specific capacitance of 1217 F.g(-1) at a current density of 1 A.g(-1) and a good cycling performance of 89% capacity retention after 8000 cycles. In addition, a symmetric supercapacitor is fabricated using the PPy@CoCH/CC composites as both positive and negative electrode. The prepared symmetric supercapacitors deliver a high energy density of 47.36 Wh.kg(-1) at a power density of 1600 W.kg (-1). (C) 2021 Elsevier B.V. All rights reserved.
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