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Direct solar water splitting cell using water, WO3, Pt, and polymer electrolyte membrane

Author

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  • He, Xiaoming
  • Boehm, Robert F.

Abstract

A solar water splitting cell composed of WO3, Polymer Electrolyte Membrane (PEM) and Pt was constructed for producing hydrogen from deionized water in sunlight. Spectral responsivity measurements under various temperatures and bias voltages were conducted for the cell using the Incident Photon to Current Efficiency (IPCE) method. For comparison, a known WO3 Photo Electro Chemical (PEC) cell containing H3PO4 electrolyte, WO3/H3PO4/Pt, was tested using the same test method. The WO3/PEM–H2O/Pt cell showed better Quantum Efficiency (QE) performance compared to that obtained from the cell with the chemical electrolyte. For the first time, spectral responsivity of photo water splitting process without bias power was unveiled in the new WO3 cell, demonstrating the self-sustained photo electrolysis capability. Bias voltage effect on Solar to Hydrogen (STH) conversion efficiency was dramatic in the range from 0.2V to 1.2V and suppressions of STH were observed when high bias voltages were applied. In addition, a strong temperature effect on the energy conversion efficiency at high bias voltage was observed in the cell containing PEM–H2O, revealing that the STH at 54°C is nearly five times that at 14°C.

Suggested Citation

  • He, Xiaoming & Boehm, Robert F., 2009. "Direct solar water splitting cell using water, WO3, Pt, and polymer electrolyte membrane," Energy, Elsevier, vol. 34(10), pages 1454-1457.
    • Handle: RePEc:eee:energy:v:34:y:2009:i:10:p:1454-1457
    DOI: 10.1016/j.energy.2009.05.013
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    Cited by:

    1. Li, Lin & Tang, Dawei & Song, Yongchen & Jiang, Bo & Zhang, Qian, 2018. "Hydrogen production from ethanol steam reforming on Ni-Ce/MMT catalysts," Energy, Elsevier, vol. 149(C), pages 937-943.
    2. Bozoglan, Elif & Midilli, Adnan & Hepbasli, Arif, 2012. "Sustainable assessment of solar hydrogen production techniques," Energy, Elsevier, vol. 46(1), pages 85-93.

    More about this item

    Keywords

    Solar; WO3; PEM; Photo water splitting; IPCE; STH; PEC; Photo electrolysis;
    All these keywords.

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