Photoelectrochemical Gas–Electrolyte–Solid Phase Boundary for Hydrogen Production From Water Vapor
Hydrogen production from humidity in the ambient air reduces the maintenance costs for sustainable solar-driven water splitting. We report a gas-diffusion porous photoelectrode consisting of tungsten trioxide (WO3) nanoparticles coated with a proton-conducting polymer electrolyte thin film for visib...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2018-12-01
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| Series: | Frontiers in Chemistry |
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| Online Access: | https://www.frontiersin.org/article/10.3389/fchem.2018.00598/full |
| _version_ | 1811317727962333184 |
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| author | Fumiaki Amano Fumiaki Amano Ayami Shintani Hyosuke Mukohara Young-Min Hwang Kenyou Tsurui |
| author_facet | Fumiaki Amano Fumiaki Amano Ayami Shintani Hyosuke Mukohara Young-Min Hwang Kenyou Tsurui |
| author_sort | Fumiaki Amano |
| collection | DOAJ |
| description | Hydrogen production from humidity in the ambient air reduces the maintenance costs for sustainable solar-driven water splitting. We report a gas-diffusion porous photoelectrode consisting of tungsten trioxide (WO3) nanoparticles coated with a proton-conducting polymer electrolyte thin film for visible-light-driven photoelectrochemical water vapor splitting. The gas–electrolyte–solid triple phase boundary enhanced not only the incident photon-to-current conversion efficiency (IPCE) of the WO3 photoanode but also the Faraday efficiency (FE) of oxygen evolution in the gas-phase water oxidation process. The IPCE was 7.5% at an applied voltage of 1.2 V under 453 nm blue light irradiation. The FE of hydrogen evolution in the proton exchange membrane photoelectrochemical cell was close to 100%, and the produced hydrogen was separated from the photoanode reaction by the membrane. A comparison of the gas-phase photoelectrochemical reaction with that in liquid-phase aqueous media confirmed the importance of the triple phase boundary for realizing water vapor splitting. |
| first_indexed | 2024-04-13T12:13:24Z |
| format | Article |
| id | doaj.art-00ad572bdbea4860835f089e1843d55c |
| institution | Directory Open Access Journal |
| issn | 2296-2646 |
| language | English |
| last_indexed | 2024-04-13T12:13:24Z |
| publishDate | 2018-12-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Chemistry |
| spelling | doaj.art-00ad572bdbea4860835f089e1843d55c2022-12-22T02:47:26ZengFrontiers Media S.A.Frontiers in Chemistry2296-26462018-12-01610.3389/fchem.2018.00598430546Photoelectrochemical Gas–Electrolyte–Solid Phase Boundary for Hydrogen Production From Water VaporFumiaki Amano0Fumiaki Amano1Ayami Shintani2Hyosuke Mukohara3Young-Min Hwang4Kenyou Tsurui5Department of Chemical and Environmental Engineering, The University of Kitakyushu, Kitakyushu, JapanPrecursory Research for Embryonic Science and Technology (PRESTO), Japan Science and Technology Agency (JST), Kawaguchi, JapanDepartment of Chemical and Environmental Engineering, The University of Kitakyushu, Kitakyushu, JapanDepartment of Chemical and Environmental Engineering, The University of Kitakyushu, Kitakyushu, JapanDepartment of Chemical and Environmental Engineering, The University of Kitakyushu, Kitakyushu, JapanDepartment of Chemical and Environmental Engineering, The University of Kitakyushu, Kitakyushu, JapanHydrogen production from humidity in the ambient air reduces the maintenance costs for sustainable solar-driven water splitting. We report a gas-diffusion porous photoelectrode consisting of tungsten trioxide (WO3) nanoparticles coated with a proton-conducting polymer electrolyte thin film for visible-light-driven photoelectrochemical water vapor splitting. The gas–electrolyte–solid triple phase boundary enhanced not only the incident photon-to-current conversion efficiency (IPCE) of the WO3 photoanode but also the Faraday efficiency (FE) of oxygen evolution in the gas-phase water oxidation process. The IPCE was 7.5% at an applied voltage of 1.2 V under 453 nm blue light irradiation. The FE of hydrogen evolution in the proton exchange membrane photoelectrochemical cell was close to 100%, and the produced hydrogen was separated from the photoanode reaction by the membrane. A comparison of the gas-phase photoelectrochemical reaction with that in liquid-phase aqueous media confirmed the importance of the triple phase boundary for realizing water vapor splitting.https://www.frontiersin.org/article/10.3389/fchem.2018.00598/fullgas-phase water splittingsolar H2 productionvisible-light-driven photoelectrodetungsten oxide photoanodeproton exchange membrane |
| spellingShingle | Fumiaki Amano Fumiaki Amano Ayami Shintani Hyosuke Mukohara Young-Min Hwang Kenyou Tsurui Photoelectrochemical Gas–Electrolyte–Solid Phase Boundary for Hydrogen Production From Water Vapor Frontiers in Chemistry gas-phase water splitting solar H2 production visible-light-driven photoelectrode tungsten oxide photoanode proton exchange membrane |
| title | Photoelectrochemical Gas–Electrolyte–Solid Phase Boundary for Hydrogen Production From Water Vapor |
| title_full | Photoelectrochemical Gas–Electrolyte–Solid Phase Boundary for Hydrogen Production From Water Vapor |
| title_fullStr | Photoelectrochemical Gas–Electrolyte–Solid Phase Boundary for Hydrogen Production From Water Vapor |
| title_full_unstemmed | Photoelectrochemical Gas–Electrolyte–Solid Phase Boundary for Hydrogen Production From Water Vapor |
| title_short | Photoelectrochemical Gas–Electrolyte–Solid Phase Boundary for Hydrogen Production From Water Vapor |
| title_sort | photoelectrochemical gas electrolyte solid phase boundary for hydrogen production from water vapor |
| topic | gas-phase water splitting solar H2 production visible-light-driven photoelectrode tungsten oxide photoanode proton exchange membrane |
| url | https://www.frontiersin.org/article/10.3389/fchem.2018.00598/full |
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