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Emerging Approaches to Stabilise Photocorrodible Electrodes and Catalysts for Solar Fuel Applications


The generation of solar fuels through artificial photosynthesis could, in principle, solve our looming energy crisis. Photoelectrochemical devices use light-absorbers, such as semiconductors, to capture sunlight and generate excited states of charge carriers that are transported to catalysts for the production of solar fuels. However, the most suitable photoactive materials are often chemically unstable in contact with an aqueous electrolyte solution and therefore need protection by a conformal coating through a material that is chemically robust to prevent corrosion and conducting to allow transfer of charges to a solution-exposed catalytic site. Commonly used coating procedures and materials are extremely challenging to scale and therefore unlikely to be applicable on a scale to cover global demand. In this mini review, we present recent advances in this field revolving around unconventional, yet technically simpler and less costly routes to protecting and activating photocorrodible electrodes for solar fuels application. We focus on two emerging approaches: (i) the use of single source precursor chemistry for the preparation of bi-functional protecting and catalytically active layers and (ii) the use of low-temperature fusible eutectic alloys as protecting and conducting layers that can be easily activated for catalysis.

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Publication details

The article was received on 19 Mar 2017, accepted on 18 Apr 2017 and first published on 18 Apr 2017

Article type: Minireview
DOI: 10.1039/C7EE00777A
Citation: Energy Environ. Sci., 2017, Accepted Manuscript
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    Emerging Approaches to Stabilise Photocorrodible Electrodes and Catalysts for Solar Fuel Applications

    M. Crespo Quesada and E. Reisner, Energy Environ. Sci., 2017, Accepted Manuscript , DOI: 10.1039/C7EE00777A

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