Earth-Abundant Tin Sulfide-Based Photocathodes for Solar Hydrogen Production

Wei Cheng; Nirala Singh; Will Elliott; Joun Lee; Alan Rassoolkhani; Xuejun Jin; Eric W McFarland; Syed Mubeen

doi:10.1002/advs.201700362

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Earth-Abundant Tin Sulfide-Based Photocathodes for Solar Hydrogen Production

Journal article

Open access

Peer reviewed

Earth-Abundant Tin Sulfide-Based Photocathodes for Solar Hydrogen Production

Wei Cheng, Nirala Singh, Will Elliott, Joun Lee, Alan Rassoolkhani, Xuejun Jin, Eric W McFarland and Syed Mubeen

Advanced science, Vol.5(1), pp.1700362-n/a

01/2018

DOI: 10.1002/advs.201700362

PMCID: PMC5770675

PMID: 29375966

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Abstract

Tin-based chalcogenide semiconductors, though attractive materials for photovoltaics, have to date exhibited poor performance and stability for photoelectrochemical applications. Here, a novel strategy is reported to improve performance and stability of tin monosulfide (SnS) nanoplatelet thin films for H production in acidic media without any use of sacrificial reagent. P-type SnS nanoplatelet films are coated with the -CdS buffer layer and the TiO passivation layer to form type II heterojunction photocathodes. These photocathodes with subsequent deposition of Pt nanoparticles generate a photovoltage of 300 mV and a photocurrent density of 2.4 mA cm at 0 V versus reversible hydrogen electrode (RHE) for water splitting under simulated visible-light illumination (λ > 500 nm, = 80 mW cm ). The incident photon-to-current efficiency at 0 V versus RHE for H production reach a maximum of 12.7% at 575 nm with internal quantum efficiency of 13.8%. The faradaic efficiency for hydrogen evolution remains close to unity after 6000 s of illumination, confirming the robustness of the heterojunction for solar H production.

artificial photosynthesis

electrocatalyst

tin sulfide

photocathode

hydrogen production

Details

Title: Subtitle: Earth-Abundant Tin Sulfide-Based Photocathodes for Solar Hydrogen Production
Creators: Wei Cheng - University of Iowa
Nirala Singh - University of California, Santa Barbara
Will Elliott - University of California, Santa Barbara
Joun Lee - University of Iowa
Alan Rassoolkhani - University of Iowa
Xuejun Jin - Shanghai Jiao Tong University
Eric W McFarland - University of California, Santa Barbara
Syed Mubeen - University of Iowa
Resource Type: Journal article
Publication Details: Advanced science, Vol.5(1), pp.1700362-n/a
DOI: 10.1002/advs.201700362
PMID: 29375966
PMCID: PMC5770675
NLM abbreviation: Adv Sci (Weinh)
ISSN: 2198-3844
eISSN: 2198-3844
Grant note: DOI: 10.13039/100008893, name: University of Iowa, award: 18786500
Language: English
Date published: 01/2018
Academic Unit: Civil and Environmental Engineering; Iowa Technology Institute; Chemical and Biochemical Engineering
Record Identifier: 9984197264002771

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