Journal
INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
Volume 12, Issue 5, Pages 4610-4618Publisher
ESG
DOI: 10.20964/2017.05.100
Keywords
Nickel disulfide cubes; counter electrode; dye-sensitized solar cells
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Funding
- Shenzhen Government's Plan of Science and Technology [JCYJ20160422112012739, JCYJ20150324141711596]
- Natural Science Foundation of Guangdong [2015A030310087]
- National Natural Science Foundation of China [51374146, 51602202]
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Electrocatalytic NiS2 cubes were directly synthesized on F-doped tin oxide using a hydrothermal approach and used as counter electrode in dye-sensitized solar cells (DSSCs). The NiS2 cubes displayed an excellent electrocatalytic activity in the reduction of I-3(-) showing a power conversion efficiency of 5.56%, which is close to that of the Pt-containing DSSC (7.05%). Furthermore, the NiS2 cubes showed a comparable stability to Pt. This is ascribed to the low resistance to diffusion and transfer of electrolyte ions. These results suggest that the NiS2 cubes prepared through a facile process is a promising substitute to Pt electrode.
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