期刊
DIAMOND AND RELATED MATERIALS
卷 120, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.diamond.2021.108592
关键词
ZnO sphere; Specific capacitance; Cyclic stability; Supercapacitor
类别
资金
- Periyar University
- University Grants Commission (UGC), New Delhi, Government of India [30-361/2017 (BSR)]
ZnO sphere/r-GO composite was synthesized via a simple hydrothermal method, showing high specific capacitance and cyclic stability. The composite material is a promising candidate for high-performance energy storage and photocatalytic applications.
Here in, ZnO sphere/r-GO composites was synthesized by a simple hydrothermal method. The morphological characterizations (FE-SEM and TEM) indicated the ZnO sphere covered by r-GO nanosheets. The formation of the prepared ZnO sphere/r-GO composites was investigated by XRD and FT-IR analytical techniques, respectively. The composite electrode material exhibited high specific capacitance of 293.5 F/g at the current density 1 A g(-1) and also outstanding cyclic stability of 96% retained after 10,000 charge discharge (GCD) cycles at of 6 A g(-1). The catalytic activity of ZnO sphere and ZnO sphere/r-GO composites shows the degradation percentage if 76.2 and 94.6%, respectively. ZnO sphere/r-GO composite shows around 24% of catalytic enhancement due to the high specific surface area of r-GO, and also the composite shows high reliability and degradation efficiency is still retained at 96.9% upto 5 cycles. The composite material is a potential candidate for high performance energy storage and photocatalytic applications.
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