期刊
NANOTECHNOLOGY
卷 31, 期 27, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1361-6528/ab814a
关键词
graphene; tungsten oxide; poly(ionic liquid); supercapacitive performance
资金
- research funds for the National Natural Science Foundation of China [21908051, 21606081, 21707031]
- Natural Science Foundation of Hunan Province of China [2018TP2003]
- subtopics of national key research and development plan [2016YD0300308-1]
- open project of cultivation base of National Key Laboratory of crop germplasm innovation and resource utilization
WO3 has attracted widespread attention as an important semiconductor for supercapacitors. However, applications of WO3 are limited by its poor performance regarding capacitance and conductivity. In this paper, a novel method is presented for preparing a WO3/reduced graphene oxide (RGO) composite, based on poly(ionic liquid) (PIL) as a linker. PIL enables a tight contact between WO3 and graphene to exploit the excellent electrical conductivity of graphene. Results of the morphology for the as-prepared WO3/PIL/RGO composite indicate that the WO3 nanoparticles are distributed uniformly on the surface of the RGO. The WO3/PIL/RGO electrode displays a much higher specific capacitance, 316 F g(-1) at 1 A g(-1), than that of the pure WO3 electrode. Furthermore, WO3/PIL/RGO also has good rate and long cycling performance for supercapacitors, making it a promising electrode material.
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