Electrocatalytic activity of PtAuPd/C nano multi-principal element alloy catalyst towards oxygen reduction reaction
Developing highly stable, low-platinum electrocatalysts is crucial for advancing fuel cell technology. In this study, a PtAuPd/C nano multi-principal element alloy catalyst was synthesized by a carbothermal shock method. The average particle size of the PtAuPd/C alloy nanoparticles is around 2.2 nm and the PtAuPd/C exhibits superior catalytic activity and stability towards the oxygen reduction reaction (ORR) compared to the binary alloy catalysts (PtAu/C and PtPd/C). The PtAuPd/C displays a half-wave potential (<i>E</i><sub>1/2</sub>) of 0.837 V and a Tafel slope of 53.1 mV dec<sup>-1</sup>. It demonstrates only a minimal <i>E</i><sub>1/2</sub> loss of 3.5 mV after 40 000 cycles and a mass activity retention rate of 78.2%. When employed as a cathode catalyst within a direct borohydride fuel cell, the PtAuPd/C catalyst exhibits a maximum power density of 438.3 mW cm<sup>-2</sup>. This improved ORR activity is attributed to synergistic electronic effects and modified surface strain within the PtAuPd nanoalloy.
Authors
- Junjing He (ORCID: https://orcid.org/0000-0002-8348-1633)
- Lianke Zhang (ORCID: https://orcid.org/0000-0002-7728-3438)
- Haiying Qin (ORCID: https://orcid.org/0000-0002-5273-9515)
- Zhiwei Zhang (ORCID: https://orcid.org/0000-0003-4404-6257)
- Hui Li (ORCID: https://orcid.org/0000-0003-3243-8544)
- Jing Zhang
- Hualiang Ni
Institutions
- China University of Mining and Technology (CN)
- Hangzhou Dianzi University (CN)
Publication Details
- Journal
- Physical Chemistry Chemical Physics
- Published
- 2025-01-01
- DOI
- https://doi.org/10.1039/d5cp01935d
- Primary Topic
- Electrocatalysts for Energy Conversion
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- National Natural Science Foundation of China
- Natural Science Foundation of Zhejiang Province