High-Performance Pd3Pb Intermetallic Catalyst for Electrochemical Oxygen Reduction | Zendy

Zhiming Cui | Zendy; Hao Chen | Zendy; Mengtian Zhao | Zendy; Francis J. DiSalvo | Zendy

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High-Performance Pd₃Pb Intermetallic Catalyst for Electrochemical Oxygen Reduction

Author(s) -

Zhiming Cui,

Hao Chen,

Mengtian Zhao,

Francis J. DiSalvo

Publication year - 2016

Publication title -

nano letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 4.853

H-Index - 488

eISSN - 1530-6992

pISSN - 1530-6984

DOI - 10.1021/acs.nanolett.6b00121

Subject(s) - intermetallic , catalysis , electrocatalyst , electrochemistry , materials science , electrolyte , methanol , cathode , chemical engineering , metal , inorganic chemistry , electrode , chemistry , alloy , metallurgy , organic chemistry , engineering

Extensive efforts to develop highly active and strongly durable electrocatalyst for oxygen reduction are motivated by a need for metal-air batteries and fuel cells. Here, we report a very promising catalyst prototype of structurally ordered Pd-based alloys, Pd3Pb intermetallic compound. Such structurally ordered Pd3Pb/C exhibits a significant increase in mass activity. More importantly, compared to the conventional Pt/C catalysts, ordered Pd3Pb/C is highly durable and exhibits a much longer cycle life and higher cell efficiency in Zn-air batteries. Interestingly, ordered Pd3Pb/C possesses very high methanol tolerance during electrochemical oxygen reduction, which make it an excellent methanol-tolerant cathode catalyst for alkaline polymer electrolyte membrane fuel cells. This study provides a promising route to optimize the synthesis of ordered Pd-based intermetallic catalysts for fuel cells and metal-air batteries.

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