Different photostability of BiVO₄ in near-pH-neutral electrolytes
File(s)
Author(s)
Type
Journal Article
Abstract
Photoelectrochemical water splitting is a promising route to produce hydrogen from solar energy. However, corrosion of photoelectrodes remains a fundamental challenge for their implementation. Here, we reveal different dissolution behaviors of BiVO4 photoanode in pH-buffered borate, phosphate, and citrate (hole-scavenger) electrolytes, studied in operando employing an illuminated scanning flow cell. We demonstrate that decrease in photocurrents alone does not reflect the degradation of photoelectrodes. Changes in dissolution rates correlate to the evolution of surface chemistry and morphology. The correlative measurements on both sides of the liquid-semiconductor junction provide quantitative comparison and mechanistic insights into the degradation processes.
Date Issued
2020-10-26
Date Acceptance
2020-10-02
Citation
ACS Applied Energy Materials, 2020, 3 (10), pp.9523-9527
ISSN
2574-0962
Publisher
American Chemical Society
Start Page
9523
End Page
9527
Journal / Book Title
ACS Applied Energy Materials
Volume
3
Issue
10
Copyright Statement
Copyright © 2020 American Chemical Society.
This is an open access article published under a Creative Commons Attribution (CC-BY)
License, which permits unrestricted use, distribution and reproduction in any medium,
provided the author and source are cited.
This is an open access article published under a Creative Commons Attribution (CC-BY)
License, which permits unrestricted use, distribution and reproduction in any medium,
provided the author and source are cited.
License URL
Identifier
https://www.ncbi.nlm.nih.gov/pubmed/33134878
Publication Status
Published
Coverage Spatial
United States
Date Publish Online
2020-10-06