Oxygen reduction reaction kinetics of platinum-based catalysts under stress induction
The ORR kinetic optimization for PtNi and PtPb catalysts is conferred by stress induction. First principles calculation shows the cleavage barrier reduction of the key intermediate *OOH to 28.48 and 0 kJ mol<sup>-1</sup>, respectively. Proper kinetic tuning led to a mass activity promotion of PtNi to 3.57 times that of Pt/C, whereas excessive modulation induced activity degradation for PtPb and shifted the rate-determining step to the first electron transfer, which was verified by <i>in situ</i> infrared spectroscopy and electrochemical characterization.
Authors
- Jianhua Shen (ORCID: https://orcid.org/0000-0002-0124-6972)
- Yihua Zhu (ORCID: https://orcid.org/0000-0003-4258-5409)
- Liyuan Bi
- Lili Zhang (ORCID: https://orcid.org/0000-0002-9143-9320)
- Cui Liu (ORCID: https://orcid.org/0000-0002-6393-2804)
- Jiajia Yang (ORCID: https://orcid.org/0000-0002-6972-8708)
- Haibo Jiang (ORCID: https://orcid.org/0000-0001-5139-4669)
- Shengwei Yu
- Jiyuan Lu
Institutions
- East China University of Science and Technology (CN)
Publication Details
- Journal
- Chemical Communications
- Published
- 2024-12-27
- DOI
- https://doi.org/10.1039/d4cc05856a
- Citations
- 4
- Primary Topic
- Electrocatalysts for Energy Conversion
- Type
- article
- Field-Weighted Citation Impact
- 0.41
Funders
- National Natural Science Foundation of China
- Science and Technology Commission of Shanghai Municipality
- Science and Technology Department of Tibet
- Fundamental Research Funds for the Central Universities