Pt Single Atoms on CrN Nanoparticles Deliver Outstanding Activity and CO Tolerance in the Hydrogen Oxidation Reaction

Zhaojun Yang; Chaoqiu Chen; Yunxuan Zhao; Qing Wang; Jiaqi Zhao; Geoffrey I.N. Waterhouse; Yong Qin; Lu Shang; Tierui Zhang

doi:10.1002/adma.202208799

Pt Single Atoms on CrN Nanoparticles Deliver Outstanding Activity and CO Tolerance in the Hydrogen Oxidation Reaction

Zhaojun Yang, Chaoqiu Chen, Yunxuan Zhao, Qing Wang, Jiaqi Zhao, Geoffrey I.N. Waterhouse, Yong Qin, Lu Shang, Tierui Zhang

Research output: Contribution to journal › Article › peer-review

92 Scopus citations

Abstract

The large-scale application of proton exchange membrane fuel cells is currently hampered by high cost of commercial Pt catalysts and their susceptibility to poisoning by CO impurities in H₂ feed. In this context, the development of CO-tolerant electrocatalysts with high Pt atom utilization efficiency for hydrogen oxidation reaction (HOR) is of critical importance. Herein, Pt single atoms are successfully immobilized on chromium nitride nanoparticles by atomic layer deposition method, denoted as Pt SACs/CrN. Electrochemical tests establish Pt SACs/CrN to be a very efficient HOR catalyst, with a mass activity that is 5.7 times higher than commercial PtRu/C. Strikingly, the excellent performance of Pt SACs/CrN is maintained after introducing 1000 ppm of CO in H₂ feed. The excellent CO-tolerance of Pt SACs/CrN is related to weaker CO adsorption on Pt single atoms. This work provides guidelines for the design and construction of active and CO-tolerant catalysts for HOR.

Original language	English
Article number	2208799
Journal	Advanced Materials
Volume	35
Issue number	1
DOIs	https://doi.org/10.1002/adma.202208799
State	Published - 5 Jan 2023
Externally published	Yes

Keywords

CO tolerance
Pt single-atom catalysts
chromium nitride
electrocatalysis
hydrogen oxidation reaction

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title = "Pt Single Atoms on CrN Nanoparticles Deliver Outstanding Activity and CO Tolerance in the Hydrogen Oxidation Reaction",

abstract = "The large-scale application of proton exchange membrane fuel cells is currently hampered by high cost of commercial Pt catalysts and their susceptibility to poisoning by CO impurities in H2 feed. In this context, the development of CO-tolerant electrocatalysts with high Pt atom utilization efficiency for hydrogen oxidation reaction (HOR) is of critical importance. Herein, Pt single atoms are successfully immobilized on chromium nitride nanoparticles by atomic layer deposition method, denoted as Pt SACs/CrN. Electrochemical tests establish Pt SACs/CrN to be a very efficient HOR catalyst, with a mass activity that is 5.7 times higher than commercial PtRu/C. Strikingly, the excellent performance of Pt SACs/CrN is maintained after introducing 1000 ppm of CO in H2 feed. The excellent CO-tolerance of Pt SACs/CrN is related to weaker CO adsorption on Pt single atoms. This work provides guidelines for the design and construction of active and CO-tolerant catalysts for HOR.",

keywords = "CO tolerance, Pt single-atom catalysts, chromium nitride, electrocatalysis, hydrogen oxidation reaction",

author = "Zhaojun Yang and Chaoqiu Chen and Yunxuan Zhao and Qing Wang and Jiaqi Zhao and Waterhouse, {Geoffrey I.N.} and Yong Qin and Lu Shang and Tierui Zhang",

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year = "2023",

month = jan,

day = "5",

doi = "10.1002/adma.202208799",

language = "英语",

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T1 - Pt Single Atoms on CrN Nanoparticles Deliver Outstanding Activity and CO Tolerance in the Hydrogen Oxidation Reaction

AU - Yang, Zhaojun

AU - Chen, Chaoqiu

AU - Zhao, Yunxuan

AU - Wang, Qing

AU - Zhao, Jiaqi

AU - Waterhouse, Geoffrey I.N.

AU - Qin, Yong

AU - Shang, Lu

AU - Zhang, Tierui

PY - 2023/1/5

Y1 - 2023/1/5

N2 - The large-scale application of proton exchange membrane fuel cells is currently hampered by high cost of commercial Pt catalysts and their susceptibility to poisoning by CO impurities in H2 feed. In this context, the development of CO-tolerant electrocatalysts with high Pt atom utilization efficiency for hydrogen oxidation reaction (HOR) is of critical importance. Herein, Pt single atoms are successfully immobilized on chromium nitride nanoparticles by atomic layer deposition method, denoted as Pt SACs/CrN. Electrochemical tests establish Pt SACs/CrN to be a very efficient HOR catalyst, with a mass activity that is 5.7 times higher than commercial PtRu/C. Strikingly, the excellent performance of Pt SACs/CrN is maintained after introducing 1000 ppm of CO in H2 feed. The excellent CO-tolerance of Pt SACs/CrN is related to weaker CO adsorption on Pt single atoms. This work provides guidelines for the design and construction of active and CO-tolerant catalysts for HOR.

AB - The large-scale application of proton exchange membrane fuel cells is currently hampered by high cost of commercial Pt catalysts and their susceptibility to poisoning by CO impurities in H2 feed. In this context, the development of CO-tolerant electrocatalysts with high Pt atom utilization efficiency for hydrogen oxidation reaction (HOR) is of critical importance. Herein, Pt single atoms are successfully immobilized on chromium nitride nanoparticles by atomic layer deposition method, denoted as Pt SACs/CrN. Electrochemical tests establish Pt SACs/CrN to be a very efficient HOR catalyst, with a mass activity that is 5.7 times higher than commercial PtRu/C. Strikingly, the excellent performance of Pt SACs/CrN is maintained after introducing 1000 ppm of CO in H2 feed. The excellent CO-tolerance of Pt SACs/CrN is related to weaker CO adsorption on Pt single atoms. This work provides guidelines for the design and construction of active and CO-tolerant catalysts for HOR.

KW - CO tolerance

KW - Pt single-atom catalysts

KW - chromium nitride

KW - electrocatalysis

KW - hydrogen oxidation reaction

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U2 - 10.1002/adma.202208799

DO - 10.1002/adma.202208799

M3 - 文章

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SN - 0935-9648

VL - 35

JO - Advanced Materials

JF - Advanced Materials

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M1 - 2208799

ER -

Pt Single Atoms on CrN Nanoparticles Deliver Outstanding Activity and CO Tolerance in the Hydrogen Oxidation Reaction

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Keywords

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