Graphite-protected CsPbBr3 perovskite photoanodes functionalised with water oxidation catalyst for oxygen evolution in water

Isabella Poli, Ulrich Hintermair, Miriam Regue, Santosh Kumar, Emma V Sackville, Jenny Baker, Trystan M Watson, Salvador Eslava, Petra J Cameron

Research output: Contribution to journalArticle

3 Citations (Scopus)
23 Downloads (Pure)

Abstract

Metal-halide perovskites have been widely investigated in the photovoltaic sector due to their promising optoelectronic properties and inexpensive fabrication techniques based on solution processing. Here we report the development of inorganic CsPbBr3-based photoanodes for direct photoelectrochemical oxygen evolution from aqueous electrolytes. We use a commercial thermal graphite sheet and a mesoporous carbon scaffold to encapsulate CsPbBr3 as an inexpensive and efficient protection strategy. We achieve a record stability of 30 h in aqueous electrolyte under constant simulated solar illumination, with currents above 2 mA cm-2 at 1.23 VRHE. We further demonstrate the versatility of our approach by grafting a molecular Ir-based water oxidation catalyst on the electrolyte-facing surface of the sealing graphite sheet, which cathodically shifts the onset potential of the composite photoanode due to accelerated charge transfer. These results suggest an efficient route to develop stable halide perovskite based electrodes for photoelectrochemical solar fuel generation.

Original languageEnglish
Article number2097
Number of pages10
JournalNature Communications
Volume10
Issue number1
DOIs
Publication statusPublished - 8 May 2019

Cite this

Graphite-protected CsPbBr3 perovskite photoanodes functionalised with water oxidation catalyst for oxygen evolution in water. / Poli, Isabella; Hintermair, Ulrich; Regue, Miriam; Kumar, Santosh; Sackville, Emma V; Baker, Jenny; Watson, Trystan M; Eslava, Salvador; Cameron, Petra J.

In: Nature Communications, Vol. 10, No. 1, 2097, 08.05.2019.

Research output: Contribution to journalArticle

Poli, Isabella ; Hintermair, Ulrich ; Regue, Miriam ; Kumar, Santosh ; Sackville, Emma V ; Baker, Jenny ; Watson, Trystan M ; Eslava, Salvador ; Cameron, Petra J. / Graphite-protected CsPbBr3 perovskite photoanodes functionalised with water oxidation catalyst for oxygen evolution in water. In: Nature Communications. 2019 ; Vol. 10, No. 1.
@article{7f57fcf597c84729a7446e5c6b874d0a,
title = "Graphite-protected CsPbBr3 perovskite photoanodes functionalised with water oxidation catalyst for oxygen evolution in water",
abstract = "Metal-halide perovskites have been widely investigated in the photovoltaic sector due to their promising optoelectronic properties and inexpensive fabrication techniques based on solution processing. Here we report the development of inorganic CsPbBr3-based photoanodes for direct photoelectrochemical oxygen evolution from aqueous electrolytes. We use a commercial thermal graphite sheet and a mesoporous carbon scaffold to encapsulate CsPbBr3 as an inexpensive and efficient protection strategy. We achieve a record stability of 30 h in aqueous electrolyte under constant simulated solar illumination, with currents above 2 mA cm-2 at 1.23 VRHE. We further demonstrate the versatility of our approach by grafting a molecular Ir-based water oxidation catalyst on the electrolyte-facing surface of the sealing graphite sheet, which cathodically shifts the onset potential of the composite photoanode due to accelerated charge transfer. These results suggest an efficient route to develop stable halide perovskite based electrodes for photoelectrochemical solar fuel generation.",
author = "Isabella Poli and Ulrich Hintermair and Miriam Regue and Santosh Kumar and Sackville, {Emma V} and Jenny Baker and Watson, {Trystan M} and Salvador Eslava and Cameron, {Petra J}",
year = "2019",
month = "5",
day = "8",
doi = "10.1038/s41467-019-10124-0",
language = "English",
volume = "10",
journal = "Nature Communications",
issn = "2041-1723",
publisher = "Nature Research",
number = "1",

}

TY - JOUR

T1 - Graphite-protected CsPbBr3 perovskite photoanodes functionalised with water oxidation catalyst for oxygen evolution in water

AU - Poli, Isabella

AU - Hintermair, Ulrich

AU - Regue, Miriam

AU - Kumar, Santosh

AU - Sackville, Emma V

AU - Baker, Jenny

AU - Watson, Trystan M

AU - Eslava, Salvador

AU - Cameron, Petra J

PY - 2019/5/8

Y1 - 2019/5/8

N2 - Metal-halide perovskites have been widely investigated in the photovoltaic sector due to their promising optoelectronic properties and inexpensive fabrication techniques based on solution processing. Here we report the development of inorganic CsPbBr3-based photoanodes for direct photoelectrochemical oxygen evolution from aqueous electrolytes. We use a commercial thermal graphite sheet and a mesoporous carbon scaffold to encapsulate CsPbBr3 as an inexpensive and efficient protection strategy. We achieve a record stability of 30 h in aqueous electrolyte under constant simulated solar illumination, with currents above 2 mA cm-2 at 1.23 VRHE. We further demonstrate the versatility of our approach by grafting a molecular Ir-based water oxidation catalyst on the electrolyte-facing surface of the sealing graphite sheet, which cathodically shifts the onset potential of the composite photoanode due to accelerated charge transfer. These results suggest an efficient route to develop stable halide perovskite based electrodes for photoelectrochemical solar fuel generation.

AB - Metal-halide perovskites have been widely investigated in the photovoltaic sector due to their promising optoelectronic properties and inexpensive fabrication techniques based on solution processing. Here we report the development of inorganic CsPbBr3-based photoanodes for direct photoelectrochemical oxygen evolution from aqueous electrolytes. We use a commercial thermal graphite sheet and a mesoporous carbon scaffold to encapsulate CsPbBr3 as an inexpensive and efficient protection strategy. We achieve a record stability of 30 h in aqueous electrolyte under constant simulated solar illumination, with currents above 2 mA cm-2 at 1.23 VRHE. We further demonstrate the versatility of our approach by grafting a molecular Ir-based water oxidation catalyst on the electrolyte-facing surface of the sealing graphite sheet, which cathodically shifts the onset potential of the composite photoanode due to accelerated charge transfer. These results suggest an efficient route to develop stable halide perovskite based electrodes for photoelectrochemical solar fuel generation.

U2 - 10.1038/s41467-019-10124-0

DO - 10.1038/s41467-019-10124-0

M3 - Article

VL - 10

JO - Nature Communications

JF - Nature Communications

SN - 2041-1723

IS - 1

M1 - 2097

ER -