Selective Catalyst Surface Access through Atomic Layer Deposition

Samuel S. Hardisty, Shira Frank, Melina Zysler, Reut Yemini, Anya Muzikansky, Malachi Noked, David Zitoun

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


Catalyst poisoning is a prominent issue, reducing the lifetime of catalysts and increasing the costs of the processes that rely on them. The electrocatalysts that enable green energy conversion and storage, such as proton exchange membrane fuel cells and hydrogen bromine redox flow batteries, also suffer from this issue, hindering their utilization. Current solutions to protect electrocatalysts from harmful species fall short of effective selectivity without inhibiting the required reactions. This article describes the protection of a standard 50% Pt/C catalyst with a V2O5 coating through atomic layer deposition (ALD). The ALD selectively deposited V2O5 on the Pt, which enhanced hydrogen transport to the Pt surface and resulted in a higher mass activity in alkaline electrolytes. Cyclic voltammetry and X-ray photoelectron spectroscopy showed that the Pt was protected by the coating in the HBr/Br2 electrolyte which dissolved the uncoated 50% Pt/C in under 3 min.

Original languageEnglish
Pages (from-to)58827-58837
Number of pages11
JournalACS applied materials & interfaces
Issue number49
StatePublished - 15 Dec 2021

Bibliographical note

Funding Information:
This project has received funding from the European Union’s Horizon 2020 research and innovation program under the Marie Skłodowska-Curie Grant Agreement no. 765289─Flowcamp and Israel MOST─Germany DFG bilateral program on electrochemical power sources (Pedusa). The authors thank Sergei Remennik for the STEM and elemental mapping.

Publisher Copyright:
© 2021 American Chemical Society.


  • atomic layer deposition
  • bromine
  • electrocatalysis
  • hydrogen
  • redox flow battery
  • selectivity


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