Cited by 62Electrocatalysts for Energy ConversionFuel Cells and Related MaterialsCatalytic Processes in Materials Science

The DOI matches its Crossref record; 53 of the 53 references it cites were found in a registry or an index.

Interstitial B-Doping in Pt Lattice to Upgrade Oxygen Electroreduction Performance

Abstract

The dissolution of M in currently popular Pt–M alloy catalysts (M = Co, Ni, and Fe) during the oxygen reduction reaction (ORR) may deter their wide application in proton exchange membrane fuel cells (PEMFCs). In this work, interstitial B-doping in the Pt lattice is instead used to design a durable and active ORR catalyst, by taking advantage of its unique regulation of the electronic structure of surface Pt sites. 3 nm Pt–B nanoparticles on carbon black (Pt–B/C) are obtained using dimethylamine borane (DMAB) as a reductant and the B source in a mixed H 2 O–ethylene glycol precursor solution. The formation of the B-doped Pt catalyst is verified by inductively coupled plasma-atomic emission spectrometry, X-ray diffractometry, and spherical aberration-corrected scanning transmission electron microscopy. Both half-cell and single-cell tests indicate that the as-synthesized Pt–B/C catalyst outperforms the commercial Pt/C(com) in terms of activity and durability. In particular, the Pt–B/C-based PEMFC exhibits an initial maximum power density 1.24 times as high as the Pt/C(com)-based one under otherwise same conditions, with a 15% decay for the former versus a 45% decay for the latter after 30 000 cycles of the accelerated degradation test (ADT). Comparative DFT calculations on B-doped and undoped Pt(111) surfaces reveal that the lowered Pt d-band center and the strong interaction of Pt–B bonding weaken the binding of OH and O species to surface Pt sites and lessen oxidative disrupt…

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Crossref · 10.1021/acscatal.2c01052

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  1. 10.1021/jp900349g · DOI

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Metadata

Authors
Mao, Z., Ding, C., Liu, X., Zhang, Q., Qin, X., Li, H., Yang, F., Li, Q., Zhang, X.-G., Zhang, J., & Cai, W.-B.
Affiliations
  • Fudan University (CN)
  • State Key Laboratory of Materials Processing and Die & Mould Technology (CN)
  • ShanghaiTech University (CN)
  • Henan Normal University (CN)
  • Shanghai Jiao Tong University (CN)
Corresponding author
  • Li, Qing
  • Zhang, Xia-Guang
  • Cai, Wen-Bin
Venue
ACS Catalysis
Published
2022-07-08
Volume
12
Issue
15
Pages
8848-8856
ISSN
2155-5435 (ISSN-L)
OpenAlex
W4284892061
Cited by
62
References
53
Citations by year
2026: 18 · 2025: 14 · 2024: 18 · 2023: 11 · 2022: 1
FWCI
1.98
Type
journal article
Language
en
Open access
closed
Locations
ACS Catalysis (publishedVersion)
Funders
  • Ministry of Science and Technology of the People's Republic of China (2015CB932303, 2021YFB4001300)
  • Science and Technology Commission of Shanghai Municipality (17520711200)
  • National Natural Science Foundation of China (21733004, 22122202)
Topics
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Electrocatalysts for Energy Conversion
  • Physical Sciences › Engineering › Electrical and Electronic Engineering › Fuel Cells and Related Materials
  • Physical Sciences › Materials Science › Materials Chemistry › Catalytic Processes in Materials Science
Keywords
oxygen reduction reaction, proton exchange membrane fuel cells, dimethylamine borane, catalyst stability, accelerated degradation testing

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