期刊
ACS APPLIED MATERIALS & INTERFACES
卷 9, 期 39, 页码 33941-33947出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.7b10321
关键词
conducting polymers; hydrogel; vapor-phase polymerization; all-solid-state supercapacitors; flexible
资金
- National Natural Science Foundation of China [51763008, 51303035]
- Scientific Research Foundation of Guilin University of Technology [GUTQDJJ2017002]
A conducting polymer-based hydrogel (PPy/CPH) with a polypyrrole-poly(vinyl alcohol) interpenetrating network was prepared by utilization of a chemical cross-linked poly(vinyl alcohol)-H2SO4 hydrogel (CPH) film as flexible substrate followed by vapor-phase polymerization of pyrrole. Then an all-sofid-state polymer supercapacitor (ASSPS) was fabricated by sandwiching the CPH film between two piece's of the PPy/CPH film. The ASSPS was mechanically robust and flexible with a tensile strength of 20.83 MPa and a break elongation of 377% which is superior to other flexible conducting polymer hydrogel-based supercapacitors owing to the strong hydrogen bonding interactions among the layers and the high mechanical properties of the PPy/CPH. It exhibits maximum volumetric specific capacitance of 13.06 F/cm(3) and energy density of 1160.9 mu Wh/cm(3) . The specific capacitance maintains 97.9% and 86.3% of its initial value after 10 000 folding cycles and 10 000 charge-discharge cycles, respectively. The remarkable electrochemical and mechanical performance indicates this novel ASSPS device is promising for flexible electronics.
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