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

Accepted version
Peer-reviewed

Type

Article

Change log

Authors

Crespo-Quesada, M 

Abstract

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.

Description

Keywords

3403 Macromolecular and Materials Chemistry, 34 Chemical Sciences, 3406 Physical Chemistry, 40 Engineering, 4016 Materials Engineering, 7 Affordable and Clean Energy, 13 Climate Action

Journal Title

Energy and Environmental Science

Conference Name

Journal ISSN

1754-5692
1754-5706

Volume Title

10

Publisher

Royal Society of Chemistry
Sponsorship
European Commission (623061)
Christian Doppler Forschungsgesellschaft (unknown)
People Programme (Marie Curie Actions) of the European Union’s Seventh Framework Programme FP7-PEOPLE-2013- IEF under REA Grant Agreement No. (623061; M.C-Q.) and the Christian Doppler Research Association (Austrian Federal Ministry of Science, Research and Economy and the National Foundation for Research, Technology and Development) and the OMV Group (E.R.)