A review and evaluation of photoelectrode coating materials and methods for photoelectrochemical hydrogen production

Canan Acar*, Ibrahim Dincer

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

51 Citations (Scopus)

Abstract

In this study, CdS, TiO2, CdSe, WO3, Fe2O3, and CuO/Cu2O based photoelectrode coating materials are considered for investigation under some significant selected coating methods, namely, chemical vapor deposition (CVD), electrochemical deposition (ECD), electrodeposition (ED), sol–gel (SG), spin coating (SC), and spray pyrolysis (SP). Their performance evaluations are carried out comparatively for photoelectrochemical hydrogen production. The photocurrent generation and voltage/light requirements of these photoelectrodes are also compared to evaluate the impact of material and method selection on photoelectrochemical hydrogen generation. The results show that among selected photoelectrode coating materials, CdS based photoelectrodes generate the highest photocurrent (3715.58 μA/cm2), followed by CdSe (2963.43 μA/cm2), CuO/Cu2O (1873.33 μA/cm2), TiO2 (1500.60 μA/cm2), WO3 (1435.28 μA/cm2), and Fe2O3 (443.3 μA/cm2). Average photocurrent densities of selected coating methods show that photocathodes processed by spin coating produce the highest photocurrent (2343.57 μA/cm2), followed by electrochemical deposition (1623.36 μA/cm2), electrodeposition (1359.77 μA/cm2), spray pyrolysis (1217.50 μA/cm2), chemical vapor deposition (619.44 μA/cm2), and sol–gel (335.06 μA/cm2).
Original languageEnglish
Pages (from-to)7950-7959
JournalInternational journal of hydrogen energy
Volume41
Issue number19
Early online date28 Dec 2015
DOIs
Publication statusPublished - 25 May 2016
Externally publishedYes

Keywords

  • Hydrogen production
  • Solar
  • Photoelectrochemical
  • Electroplating
  • Environmental impact

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