Journal
JOURNAL OF PHYSICAL CHEMISTRY C
Volume 117, Issue 13, Pages 6561-6566Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jp401032c
Keywords
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Funding
- National Basic Research Program of China [2011CB933302]
- National Natural Science Foundation of China [20971025, 50903020, 90922004]
- STCSM [12JC1401500]
- Shanghai Pujiang Project [11PJ1401700]
- Shanghai Leading Academic Discipline Project [B108]
- Jiangsu Major Program [BY2010147]
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NiS2 nanoparticles and nanocomposites of NiS2 with reduced graphene oxide (NiS2@RGO) have been successfully prepared via a facile hydrothermal reaction of nickel ions and sulfur source in the absence or presence of graphene oxide. NiS2@RGO nanocomposites exhibit excellent electrocatalytic performance for reduction of triiodide, owing to the improved conductivity and positive synergetic effect between NiS2 and RGO. As a consequence, the dye-sensitized solar cell with the NiS2@RGO counter electrode (CE) produces a power conversion efficiency of 8.55%, which is higher than that (7.02%) for the DSSC with the NiS2 CE, higher than that (3.14%) for the DSSC with the RGO CE, and also higher than that (8.15%) for the DSSC with the reference Pt CE under the same conditions.
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