Design of a photochemical water electrolysis system based on a W-typed dye-sensitized serial solar module for high hydrogen production
- Design of a photochemical water electrolysis system based on a W-typed dye-sensitized serial solar module for high hydrogen production
- 강미숙; 곽병섭; 채진호[채진호]
- CELLS; EFFICIENCY; GENERATION; DEVICES; FILMS
- Issue Date
- ELSEVIER SCI LTD
- APPLIED ENERGY, v.125, pp.189 - 196
- A W-typed dye-sensitized serial solar module (W-typed DSSM) was designed for hydrogen production from water electrolysis. The optimal thickness and width of the TiO2 electrode film were 12 mu m and 5 mm, and the optimal thickness of Pt counter electrode film was 4 nm, respectively. The photocurrent density, open circuit voltage, and fill factor were 2.13 mA cm(-2), 3.51 V, and 0.61, respectively, for a serial module assembled from five unit cells, which resulted in an overall conversion efficiency of 4.56%. The obtained voltage increased with increasing number of unit cells connected, and was 3.51 V in the five column fabricated W-typed DSSM. 2.1 mL h(-1) of hydrogen gas was emitted when a W-typed DSSM assembled from five columns was connected to carbon electrodes in a water electrolysis system. The rate of hydrogen evolution in the five columned W-typed DSSM was 0.00213 L h(-1). Therefore, the actual light-hydrogen conversion was calculated to be 2.02%. (C) 2014 Elsevier Ltd. All rights reserved.
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