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Application of Co-Mo bimetal/carbon composite in dye-sensitized solar cells and its research on synergy mechanism

Journal of Solid State Electrochemistry, ISSN: 1433-0768, Vol: 24, Issue: 3, Page: 753-759
2020
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Article Description

Bimetal/carbon aerogels have many advantages, such as nano-scale properties, low density, large specific surface area, and high porosity, but their application in dye-sensitized solar cells (DSSCs) as a counter electrode (CE) instead of noble metal Pt is relatively rare. In this paper, a low-cost sodium alginate was used to obtain a Co-Mo bimetal/carbon composite through a simple and controlled carbonization process. Using them as CEs of ZnO-based DSSCs, the filling characteristics of dye can be effectively improved. When the Co/Mo molar ratio is 1:3, the photoelectric conversion efficiency of Co-Mo bimetal/carbon composite–based DSSCs is close to the photoelectric conversion efficiency of Pt based, which is considered to be the result of the synergy of the carbon and two metal ions.

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