Combinatorial screening of Pd-based quaternary electrocatalysts for oxygen reduction reaction in alkaline media

Jinyang Li, Helge S. Stein, Kirill Sliozberg, Jingbei Liu, Yanhui Liu, Genevieve Sertic, Ellen Scanley, Alfred Ludwig, Jan Schroers, Wolfgang Schuhmann, André D. Taylor

Research output: Contribution to journalArticle

Abstract

The implementation of electrochemical systems such as fuel cells has been hindered by the slow development of low cost high activity catalysts. Here we examine the oxygen reduction reaction performance of a combinatorial Pd-Au-Ag-Ti thin film library using high-throughput screening and correlate the electrochemical behavior to the crystallographic properties. We find compositions of ca. 40-60 at% Pd and 30-35 at% Au exhibit both a low overpotential of close to the value of pure Pt as well as high current density. We also observe a volcano-like relationship between the overpotential and the solid formation strain. This study provides compositional guidance towards the future synthesis of nanostructured quaternary Pd-Au-Ag-Ti alloys and suggests the potential for broader application of high-throughput electrochemical characterization by means of an automatic scanning droplet cell.

Original languageEnglish (US)
Pages (from-to)67-72
Number of pages6
JournalJournal of Materials Chemistry A
Volume5
Issue number1
DOIs
StatePublished - Jan 1 2017

ASJC Scopus subject areas

  • Chemistry(all)
  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)

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    Li, J., Stein, H. S., Sliozberg, K., Liu, J., Liu, Y., Sertic, G., Scanley, E., Ludwig, A., Schroers, J., Schuhmann, W., & Taylor, A. D. (2017). Combinatorial screening of Pd-based quaternary electrocatalysts for oxygen reduction reaction in alkaline media. Journal of Materials Chemistry A, 5(1), 67-72. https://doi.org/10.1039/C6TA08088J