Different photostability of BiVO4 in near-pH-neutral electrolytes

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

Location
Deutsche Nationalbibliothek Frankfurt am Main
Extent
Online-Ressource
Language
Englisch
Notes
ACS applied energy materials. - 3, 10 (2020) , 9523-9527, ISSN: 2574-0962

Event
Veröffentlichung
(where)
Freiburg
(who)
Universität
(when)
2021
Creator
Zhang, Siyuan
Ahmet, Ibbi
Kim, Se-Ho
Kasian, Olga
Mingers, Andrea M.
Schnell, Patrick
Kölbach, Moritz
Lim, Joohyun
Fischer, Anna
Mayrhofer, Karl J. J.
Cherevko, Serhiy
Gault, Baptiste
Scheu, Christina
Krol, Roel van de

DOI
10.1021/acsaem.0c01904
URN
urn:nbn:de:bsz:25-freidok-1752000
Rights
Der Zugriff auf das Objekt ist unbeschränkt möglich.
Last update
15.08.2025, 7:36 AM CEST

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Associated

Time of origin

  • 2021

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