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Electrodeposition of Pt - Rare earth alloys as ORR catalysts for fuel cells

Lookup NU author(s): Professor Ulrich Stimming

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Abstract

Electrochemical deposition was studied as a potentially scalable method for the preparation of Pt-rare earth alloys for application as cathode catalyst in proton exchange membrane fuel cells. For this purpose, experiments both on electrodeposition of platinum and of the rare earth elements yttrium and lanthanum were carried out in two different types of ionic liquid. While the electrodeposition of platinum was successful in both liquids, the deposition of the rare earth metals was more challenging. The deposition of Y in a TFSI based liquid was prevented by electrode passivation, while in a BF4- liquid no passivation was seen, but also no clear indication of a deposition process was seen. For La, there was deposition using different precursors, but only at very low deposition rates. The nature of the deposit could not yet be unequivocally determined. Initial attempts in alloy deposition were not successful.


Publication metadata

Author(s): Asen L, Ju W, Mostafa E, Martens S, Heiz U, Stimming U, Schneider O

Publication type: Conference Proceedings (inc. Abstract)

Publication status: Published

Conference Name: PRiME 2016/230th ECS Meeting

Year of Conference: 2016

Pages: 323-332

Acceptance date: 02/04/2016

Publisher: Electrochemical Society Inc.

URL: https://doi.org/10.1149/07515.0323ecst

DOI: 10.1149/07515.0323ecst

Library holdings: Search Newcastle University Library for this item

Series Title: ECS Transactions

ISBN: 9781607685395


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