期刊
JOURNAL OF MATERIALS CHEMISTRY A
卷 5, 期 1, 页码 67-72出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c6ta08088j
关键词
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资金
- NSF [MRSEC DMR 1119826]
- NSF-PECASE award [CBET-0954985]
- NSF MRSEC [DMR 1119826]
- International Max Planck Research School for Surface and Interface Engineering (IMPRS-SurMat)
- Directorate For Engineering
- Div Of Chem, Bioeng, Env, & Transp Sys [0954985] Funding Source: National Science Foundation
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. 4060 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.
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