Hybrid Sn–Co binary oxide nanosheets grown on carbon paper as the supercapacitor electrode materials

Hybrid Sn–Co binary oxide with different Sn/Co feeding molar ratios on carbon paper are successfully obtained using a facile hydrothermal method followed by a post-annealing procedure. The results of electrochemical tests show that the electrode with a feeding molar ratio of 1:4 (named as Sn1Co4) ha...

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Bibliographic Details
Published in:Journal of alloys and compounds 2020-01, Vol.814, p.152199, Article 152199
Main Authors: Yu, Yawei, Tan, Yurong, Zhang, Haoze, Yang, Bingqian, Yuan, Lefan, Shen, Xiaodong, Hu, Xiulan
Format: Article
Language:English
Subjects:
Capacitance
Carbon
Carbon paper
Electrochemical analysis
Electrode materials
Electrodes
Hydrothermal method
Nanosheets
Sn-Co binary oxide
Supercapacitor
Supercapacitors
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Summary:Hybrid Sn–Co binary oxide with different Sn/Co feeding molar ratios on carbon paper are successfully obtained using a facile hydrothermal method followed by a post-annealing procedure. The results of electrochemical tests show that the electrode with a feeding molar ratio of 1:4 (named as Sn1Co4) has better electrochemical performance than that of the others. The specific capacitance can achieve 937.4 F g−1at 5 mV s−1 (580.8 F g−1 at 1 A g−1), as well as the capacitance retention is 97.5% after the galvanostatic charge-discharge for 20000 cycles at 30 A g−1. These results demonstrate that the Sn1Co4 can be considered as a potential electrode material for the next generation supercapacitor. •Hybrid Sn–Co binary oxide nanosheets grown on carbon paper were synthesized.•Porous Sn1Co4 nanosheets gave better electrochemical storage properties.•The synergistic effect of SnO2 and Co3O4 is beneficial to improve the capacity.
ISSN:0925-8388
1873-4669
DOI:10.1016/j.jallcom.2019.152199