期刊
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
卷 8, 期 17, 页码 6675-6681出版社
AMER CHEMICAL SOC
DOI: 10.1021/acssuschemeng.0c00188
关键词
Biomass; Yellow bean sprout; Heteroatom carbon; CeO2 nanoparticles; Supercapacitors
资金
- Natural Science Foundation of Jiangsu Province [BK20181040]
- National Natural Science Foundation of China [31800495, 21908086]
- Natural Science Foundation of the Jiangsu Higher Education Insitutions of China [19KJB610011]
- China Postdoctoral Science Foundation [2019M653654]
Carbon materials have been widely used in fabricating supercapacitors. However, their capacitive performance is poor but can be improved by means of heteroatom doping and increasing active sites. Herein, a green and facile strategy is introduced to synthesize a heteroatom carbon/CeO2 nanoparticles complex (HCCN-x, including C, N, O, and Ce elements) using a natural plant, yellow bean sprout, as the carbon source. According to the results, the calcination temperature provides great influence on the electrochemical properties of HCCN-x. In comparison with HCCN-600 and HCCN-700, the HCCN-800 electrode exhibits outstanding performance with the gravimetric capacitance being up to 752 F g(-1) and the capacitance retention remaining 97.5% after 10 000 cycles. Besides, the HCCN-800 electrodes are also assembled in the symmetric supercapacitors with the energy density being 25.5 Wh kg(-1 ). Our research opens up a novel avenue for designing of biomass carbon composites in energy conversion and storage utilization.
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