期刊
JOURNAL OF MATERIALS CHEMISTRY
卷 21, 期 29, 页码 10761-10766出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c1jm11422k
关键词
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资金
- National Natural Science Foundation of China [50773008]
- National High Technology Research and Development Program for Advanced Materials of China [2009AA03Z220]
Two novel flexible counter electrodes (CEs) on Ti sheets using molybdenum and tungsten nitrides (Mo2N, W2N) as catalysts were synthesized and used in a dye-sensitized solar cell (DSC) system. High catalytic activity of the two nitride CEs for the reduction of triiodide were proved by cyclic voltammetry, electrochemical impedance spectroscopy and Tafel-polarization measurements. The DSCs based on Mo2N and W2N CEs achieved power conversion efficiencies of 6.38 and 5.81%, reaching 91 and 83% of the photovoltaic performance of the DSC using a Pt CE, respectively. This research paves a promising way to develop new CE catalysts and reduce the cost of DSCs.
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