Fuel cell performance of palladium-platinum core-shell electrocatalysts synthesized in gram-scale batches

Khateeb, Siddique; Su, Dong; Guerreo, Sandra; Darling, Robert M.; Protsailo, Lesia V.; Shao, Minhua

doi:10.1149/2.1301607jes

Title: Fuel cell performance of palladium-platinum core-shell electrocatalysts synthesized in gram-scale batches

Journal Article · Tue May 03 00:00:00 EDT 2016 · Journal of the Electrochemical Society

DOI:https://doi.org/10.1149/2.1301607jes· OSTI ID:1257953

Khateeb, Siddique ^[1]; Su, Dong ^[2]; Guerreo, Sandra ^[1]; Darling, Robert M. ^[3]; Protsailo, Lesia V. ^[3]; Shao, Minhua ^[4]

UTC Power, South Windsor, CT (United States)
Brookhaven National Lab. (BNL), Upton, NY (United States)
UTC Power, South Windsor, CT (United States); United Technologies Research Center, East Hartford, CT (United States)
The Hong Kong Univ. of Science and Technology, Kowloon (Hong Kong)

This article presents the performance of palladium-platinum core-shell catalysts (Pt/Pd/C) for oxygen reduction synthesized in gram-scale batches in both liquid cells and polymer-electrolyte membrane fuel cells. Core-shell catalyst synthesis and characterization, ink fabrication, and cell assembly details are discussed. The Pt mass activity of the Pt/Pd core-shell catalyst was 0.95 A mg^–1 at 0.9 V measured in liquid cells (0.1 M HClO4), which was 4.8 times higher than a commercial Pt/C catalyst. The performances of Pt/Pd/C and Pt/C in large single cells (315 cm²) were assessed under various operating conditions. The core-shell catalyst showed consistently higher performance than commercial Pt/C in fuel cell testing. A 20–60 mV improvement across the whole current density range was observed on air. Sensitivities to temperature, humidity, and gas composition were also investigated and the core-shell catalyst showed a consistent benefit over Pt under all conditions. However, the 4.8 times activity enhancement predicated by liquid cell measurements was not fully realized in fuel cells.

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Research Organization:: Brookhaven National Lab. (BNL), Upton, NY (United States). Center for Functional Nanomaterials (CFN)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: SC00112704

OSTI ID:: 1257953

Report Number(s):: BNL-112242-2016-JA; R&D Project: 16060; KC0403020

Journal Information:: Journal of the Electrochemical Society, Vol. 163, Issue 7; ISSN 0013-4651

Publisher:: The Electrochemical SocietyCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 16 works

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Core–Shell-Structured Low-Platinum Electrocatalysts for Fuel Cell Applications Wang, Rongfang; Wang, Hui; Luo, Fan Electrochemical Energy Reviews, Vol. 1, Issue 3 https://doi.org/10.1007/s41918-018-0013-0	journal	July 2018
Electrochemical Properties and Single Cell Performance of Pd Core-Pt Shell Structured Catalyst Synthesized by a Simple Direct Displacement Reaction Aoki, Naoya; Inoue, Hideo; Yoshiura, Reiko Journal of The Electrochemical Society, Vol. 167, Issue 4 https://doi.org/10.1149/1945-7111/ab743e	journal	January 2020
Electrocatalysts Prepared by Galvanic Replacement Papaderakis, Athanasios; Mintsouli, Ioanna; Georgieva, Jenia Catalysts, Vol. 7, Issue 12 https://doi.org/10.3390/catal7030080	journal	March 2017

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