期刊
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
卷 7, 期 19, 页码 16803-16813出版社
AMER CHEMICAL SOC
DOI: 10.1021/acssuschemeng.9b04321
关键词
melamine foam; Co(OH)(2); compressible electrode; supercapacitor; compression performance
资金
- National Natural Science Foundation of China [21571186]
- National Key R&D Project from the Ministry of Science and Technology, China [2016YFA0202702]
- Shenzhen Basic Research Plan [JCYJ20170818162548196]
- Chinese Academy of Sciences Key Research Projects of Frontier Science [QYZDY-SSWJSC010]
- Youth Innovation Promotion Association [2017411]
- National and Local Joint Engineering Laboratory of Advanced Electronic Packaging Materials (Shenzhen Development and Reform Committee) [2017-934]
- Scientific Research Foundation of Shandong University of Science and Technology [2014RCJJ002]
In the development of commercial wearable electronic devices with improved mechanical and electrochemical performance, flexible supercapacitors can retain their original properties even under and during recovery from various mechanical deformations and have caused considerable attention because of their outstanding mechanical and electrochemical performance. In this work, a carbonized melamine foam /Co(OH)(2) (CMF/Co(OH)(2)) compressible electrode material with a three-dimensional interconnected network structure was prepared by high-temperature carbonization and electrochemical deposition for developing a flexible supercapacitor. In the CMF/Co(OH)(2) compressible material, Co(OH)(2) nanosheets were vertically deposited on the CMF fiber surface with significantly increased specific surface area, illustrating a volumetric capacitance of 2.51 F/cm(3) at 5 mA/cm(3). Particularly, the CMF/Co(OH)(2) material delivers a remarkable compression performance with 97.80% volumetric capacitance retention in 60% compression strain. Moreover, we assembled an asymmetrical all-solid compressible supercapacitor based on CMF/Co(OH)(2) and surveyed its electrochemical performance to investigate the applicability of the compressible electrode material, and it has been demonstrated that two devices in series can drive a red light-emitting diode and work properly even under different compressions. These wonderful electrochemical and compression performances enable CMF/Co(OH)(2) to be a favorable compressible electrode material in flexible supercapacitors, expanding the application fields of flexible supercapacitors.
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