Cargando…
Metal-encapsulated organolead halide perovskite photocathode for solar-driven hydrogen evolution in water
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...
Autores principales: | , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group
2016
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5025836/ https://www.ncbi.nlm.nih.gov/pubmed/27595974 http://dx.doi.org/10.1038/ncomms12555 |
_version_ | 1782454030371389440 |
---|---|
author | Crespo-Quesada, Micaela Pazos-Outón, Luis M. Warnan, Julien Kuehnel, Moritz F. Friend, Richard H. Reisner, Erwin |
author_facet | Crespo-Quesada, Micaela Pazos-Outón, Luis M. Warnan, Julien Kuehnel, Moritz F. Friend, Richard H. Reisner, Erwin |
author_sort | Crespo-Quesada, Micaela |
collection | PubMed |
description | 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±0.03 V versus RHE is obtained. The photoelectrodes show remarkable stability retaining more than 80% of their initial photocurrent for ∼1 h under continuous illumination. |
format | Online Article Text |
id | pubmed-5025836 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2016 |
publisher | Nature Publishing Group |
record_format | MEDLINE/PubMed |
spelling | pubmed-50258362016-09-23 Metal-encapsulated organolead halide perovskite photocathode for solar-driven hydrogen evolution in water Crespo-Quesada, Micaela Pazos-Outón, Luis M. Warnan, Julien Kuehnel, Moritz F. Friend, Richard H. Reisner, Erwin Nat Commun Article 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±0.03 V versus RHE is obtained. The photoelectrodes show remarkable stability retaining more than 80% of their initial photocurrent for ∼1 h under continuous illumination. Nature Publishing Group 2016-09-06 /pmc/articles/PMC5025836/ /pubmed/27595974 http://dx.doi.org/10.1038/ncomms12555 Text en Copyright © 2016, The Author(s) http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
spellingShingle | Article Crespo-Quesada, Micaela Pazos-Outón, Luis M. Warnan, Julien Kuehnel, Moritz F. Friend, Richard H. Reisner, Erwin Metal-encapsulated organolead halide perovskite photocathode for solar-driven hydrogen evolution in water |
title | Metal-encapsulated organolead halide perovskite photocathode for solar-driven hydrogen evolution in water |
title_full | Metal-encapsulated organolead halide perovskite photocathode for solar-driven hydrogen evolution in water |
title_fullStr | Metal-encapsulated organolead halide perovskite photocathode for solar-driven hydrogen evolution in water |
title_full_unstemmed | Metal-encapsulated organolead halide perovskite photocathode for solar-driven hydrogen evolution in water |
title_short | Metal-encapsulated organolead halide perovskite photocathode for solar-driven hydrogen evolution in water |
title_sort | metal-encapsulated organolead halide perovskite photocathode for solar-driven hydrogen evolution in water |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5025836/ https://www.ncbi.nlm.nih.gov/pubmed/27595974 http://dx.doi.org/10.1038/ncomms12555 |
work_keys_str_mv | AT crespoquesadamicaela metalencapsulatedorganoleadhalideperovskitephotocathodeforsolardrivenhydrogenevolutioninwater AT pazosoutonluism metalencapsulatedorganoleadhalideperovskitephotocathodeforsolardrivenhydrogenevolutioninwater AT warnanjulien metalencapsulatedorganoleadhalideperovskitephotocathodeforsolardrivenhydrogenevolutioninwater AT kuehnelmoritzf metalencapsulatedorganoleadhalideperovskitephotocathodeforsolardrivenhydrogenevolutioninwater AT friendrichardh metalencapsulatedorganoleadhalideperovskitephotocathodeforsolardrivenhydrogenevolutioninwater AT reisnererwin metalencapsulatedorganoleadhalideperovskitephotocathodeforsolardrivenhydrogenevolutioninwater |