Metal-encapsulated organolead halide perovskite photocathode for solar-driven hydrogen evolution in water

Details

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Version: Final published version
Serval ID
serval:BIB_529A039086DE
Type
Article: article from journal or magazin.
Collection
Publications
Title
Metal-encapsulated organolead halide perovskite photocathode for solar-driven hydrogen evolution in water
Journal
Nature Communications
Author(s)
Crespo-Quesada Micaela, Pazos-Outón Luis M., Warnan Julien, Kuehnel Moritz F., Friend Richard H., Reisner Erwin
ISSN
2041-1723
Publication state
Published
Issued date
06/09/2016
Peer-reviewed
Oui
Volume
7
Pages
12555
Language
english
Abstract
Lead-halide perovskites have triggered the latest breakthrough in photovoltaic technology. Despite the great promise shown by these materials, their instability towards water even in the presence of low amounts of moisture makes them, a priori, unsuitable for their direct use as light harvesters in aqueous solution for the production of hydrogen through water splitting. Here, we present a simple method that enables their use in photoelectrocatalytic hydrogen evolution while immersed in an aqueous solution. Field’s metal, a fusible InBiSn alloy, is used to efficiently protect the perovskite from water while simultaneously allowing the photogenerated electrons to reach a Pt hydrogen evolution catalyst. A record photocurrent density of 9.8 mA cm 2 at 0 V versus RHE with an onset potential as positive as 0.95±0.03V versus RHE is obtained. The photoelectrodes show remarkable stability retaining more than 80% of their initial photocurrent for B1 h under continuous illumination.
Keywords
General Biochemistry, Genetics and Molecular Biology, General Physics and Astronomy, General Chemistry
Pubmed
Web of science
Open Access
Yes
Create date
12/12/2017 14:49
Last modification date
20/08/2019 14:08
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