期刊
JOURNAL OF PHYSICAL CHEMISTRY C
卷 118, 期 2, 页码 823-830出版社
AMER CHEMICAL SOC
DOI: 10.1021/jp4092688
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资金
- National Science Council Taiwan [NSC 101-2221-E-036-035]
One-dimensional (1D) hierarchical nanostructures composed of CoS1.097 nanoclusters directly grown on carbon nanotube (CNT) backbone (CNT@CoS1.097) were successfully synthesized by a facile glucose-assisted hydrothermal method. It was found that glucose acted as a binder to assist the hierarchical CoS1.097 nanoclusters grown on the surfaces of CNTs with uniform coverage along the longitudinal axis. The extensive electrochemical measurements confirmed that the CNT@CoS1.097 nanocomposite indeed provided simultaneously enhanced electrical conductivity and superior electrochemical activity as electrode materials for dye-sensitized solar cells (DSCs) and supercapacitors (SCs). The DSC assembled with the CNT@CoS1.097 nanocomposite counter electrode (CE) achieved an enhanced photovoltaic conversion of 7.18% to those of DSCs based on the Pt, CNT, and CoS1.097 CEs. Additionally, serving as a SC electrode, this nanocomposite delivered a remarkable specific capacitance of 541 F g(-1) at 32 A g(-1) and a stable reversible specific capacitance of 640 F g(-1) after consecutive 3000 charge/discharge at 8 A g(-1). These results demonstrate that the CNT@CoS1.097 nanocomposite electrode is quite promising to be considered for high-performance DSCs and high-rate SCs.
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