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Issue 81, 2018
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An all-inorganic lead halide perovskite-based photocathode for stable water reduction

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Abstract

Lead halide perovskites (LHPs) have been investigated for photoelectrochemical hydrogen generation from water splitting. However, the harsh requirements in preparing the environment, i.e. isolating water and oxygen, hinder the wide applications of lead halide perovskites. Herein, an all-inorganic perovskite, i.e. a CsPbBr3-based photocathode, has been prepared to generate hydrogen. It is notable that as a valuable trial for a potential large-scale production, the whole preparation process was completed in an open-air environment. The LHP photocathode achieved the highest photocurrent of about 1.2 mA cm−2 at 0 VRHE. And the photocurrent remains around 94% after continuous illumination for 1 h with the Faradaic efficiency of 90%, illustrating a good photoelectrochemical stability. The all-inorganic LHP photocathodes are facile to prepare with a relatively good performance, and can be improved via band engineering and structure optimization, of which large-scale applications can be expected.

Graphical abstract: An all-inorganic lead halide perovskite-based photocathode for stable water reduction

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Publication details

The article was received on 27 Aug 2018, accepted on 18 Sep 2018 and first published on 19 Sep 2018


Article type: Communication
DOI: 10.1039/C8CC06952B
Citation: Chem. Commun., 2018,54, 11459-11462

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    An all-inorganic lead halide perovskite-based photocathode for stable water reduction

    L. Gao, W. Luo, Y. Yao and Z. Zou, Chem. Commun., 2018, 54, 11459
    DOI: 10.1039/C8CC06952B

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