DataVXACS Applied Materials & InterfacesPaper
journal article·2022-08-03

Hydrogenated Boride-Assisted Gram-Scale Production of Platinum–Palladium Alloy Nanoparticles on Carbon Black for PEMFC Cathodes: A Study from a Practical Standpoint

Saisai Gao, Haidong Zhao, Pengfei Gao, Jinglei Bi, Dan Liu, Daolong Zhu, Bin Wang, Shengchun Yang

ACS Applied Materials & Interfaces· Volume 14· Issue 30
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Source abstract

Abstract

Platinum–palladium (PtPd) alloy catalysts with high durability are viable substituents to commercial Pt/C for proton exchange membrane fuel cells (PEMFCs). Herein, a facile approach for gram-scale preparation of PtxPd100–x alloy nanoparticles on carbon black is developed. The optimized Pt54Pd46/B–C catalyst shows a mass activity (MA) of 0.549 A mgPt–1 and a specific activity (SA) of 0.463 mA cm–2 at the rotating disk electrode (RDE) level, which are 3.4 and 1.9 times those of commercial Pt/C, respectively. In H2/O2 and H2/air PEMFCs, the membrane electrode assembly (MEA) with Pt54Pd46/B–C achieves peak power densities of 2.33 and 1.04 W cm–2, respectively, and shows negligible performance degradation after 100 h of running in H2/O2 conditions. Moreover, the MA of MEA with Pt54Pd46/B–C in H2/O2 PEMFC reaches 0.978 A mgPt+Pd–1 beyond the 2020 target of the Department of Energy (DOE) of 0.44 A mgPt–1. After 30k cyclic voltammetry cycles in PEMFC, the MA loss and cell voltage loss of MEA with Pt54Pd46/B–C are well within the DOE 2020 target. Density functional theory calculations reveal that the PtPd(111) surface can weaken the adsorption of *OOH and *OH compared to the Pt(111) surface, indicating that Pt54Pd46/B–C is more energetically favorable for the oxygen reduction reaction (ORR) than commercial Pt/C. This study offers a new approach for batch preparation of PtPd alloy-based catalysts for PEMFCs.
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Research context

Energy storageMetals & alloysNanomaterialsCatalysis & surfaces

OpenAlex topics: Electrocatalysts for Energy Conversion · Fuel Cells and Related Materials · Advanced battery technologies research

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

MOE Key Laboratory for Non-Equilibrium Synthesis and Modulation of Condensed Matter, State Key Laboratory for Mechanical Behavior of Materials, School of Physics, Xi’an Jiaotong University, Xi’an 710049, China

Shaanxi Coal and Chemical Industry Technology Research Institute Co., Ltd., Xi’an 710100, China

School of Chemistry and Chemical Engineering, Shanxi Datong University, Datong 037009, China

Northwest Institute of Nuclear Technology, Xi’an 710024, China

Shaanxi Collaborative Innovation Center for Hydrogen Fuel Cell Performance Improvement, Xi’an Jiaotong University, Xi’an 710049, China

Funding

Program for the Scientific Activities of Selected Returned Overseas Professionals in Shaanxi Province · Natural Science Foundation of Shaanxi Province · Key Scientific and Technological Innovation Team of Shaanxi province · Program of the central government guide local funding projects for scientific and technological development · Scientific Research Project of Shanxi Datong University · the China Fundamental Research Funds for the Central Universities, and the World-Class Universities (Disciplines) and the Characteristic Development Guidance Funds for the Central Universities

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