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Citation: MA Nan, GAO Guofeng, HAO Genyan, ZHAO Qiang, LI Jinping. Cobalt Oxygen-evolving Catalysts Generated in Situ and Interfaced with Silicon-based Semiconductors for Solar Water Splitting[J]. Chinese Journal of Applied Chemistry, ;2015, 32(5): 576-582. doi: 10.11944/j.issn.1000-0518.2015.05.140284 shu

Cobalt Oxygen-evolving Catalysts Generated in Situ and Interfaced with Silicon-based Semiconductors for Solar Water Splitting

1.
Research Institute of Special Chemicals, Taiyuan University of Technology, Taiyuan 030024, China

Corresponding author: LI Jinping,
Received Date: 13 August 2014
Available Online: 19 January 2015
Fund Project: 山西省自然科学基金(2014011017-1) (2014011017-1)国家自然科学基金(21476153)资助 (21476153)

Due to the earth-abundance and prevalence in photovoltaic industries,silicon was used as lightharvesting material to from a composite with amorphous cobalt oxides oxygen-evolving catalyst(OEC) to carry out the solar-driven water-splitting in near-neutral conditions for hydrogen production.The device can efficiently utilize the solar spectrum for the photon-charge conversion and allow water splitting.The Co-OEC prepared by electrolysis deposition for 400 s exhibits excellent oxygen evolution properties,with a current density of 1.7×10^-2A/cm^-2 and a oxygen evolution rate of 1.28 mol/(h·m^-2) in the potassium tetraborate buffer solution(pH=9.2) at 0V vs.NHE under AM1.5 simulated sunlight.
- semiconductor silicon,
- cobalt-oxygen-evolving catalyst,
- in situ preparation,
- hydrogen evolution,
- near-neutral
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