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An improved, cost-effective catalyst for water-splitting devices
Date:1/8/2014

oup of Michael Grtzel developed copper(I) oxide as a photocathode. The researchers found that the molybdenum sulfide can be deposited on the copper(I) oxide photocathode for use in PEC water splitting through a simple deposition process that can be easily expanded onto a large scale.

The technique shows comparable efficiency to other hydrogen evolution reaction catalysts like platinum, it preserves the optical transparency for the light-harvesting surface and it shows improved stability under acidic conditions, which could translate into lower maintenance. But more importantly, both the catalyst and the photocathode are made with cheap, earth-abundant materials that could greatly reduce the cost of PEC water-splitting devices in the future. According to senior author Xile Hu, the work represents a state-of-the-art example for solar hydrogen production devices.


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Contact: Nik Papageorgiou
n.papageorgiou@epfl.ch
Ecole Polytechnique Fdrale de Lausanne
Source:Eurekalert

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