Single-atom surface anchoring strategy via atomic layer deposition to achieve dual catalysts with remarkable electrochemical performance

Zhongxin Song; Qi Wang; Junjie Li; Keegan Adair; Ruying Li; Lei Zhang; Meng Gu; Xueliang Sun

doi:10.1002/eom2.12351

Single-atom surface anchoring strategy via atomic layer deposition to achieve dual catalysts with remarkable electrochemical performance

Zhongxin Song (Co-first Author), Qi Wang (Co-first Author), Junjie Li, Keegan Adair, Ruying Li, Lei Zhang^*, Meng Gu^*, Xueliang Sun^*

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

18 Citations (Scopus)

Abstract

Pt-Ir catalysts have been widely applied in unitized regenerative fuel cells due to their great activity for the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER). However, the application of noble metals is seriously hindered by their high cost and low abundance. To reduce the noble metals loading and catalyst cost, the atomic layer deposition is applied to selectively surface anchoring of Ir single atoms (SA) on Pt nanoparticles (NP). With the formation of SA-NP composite structure, the Ir_SA-Pt_NP catalyst exhibits significantly improved performance, achieving 2.0- and 90-times mass activity by comparison with the benchmark Pt/C catalyst for the ORR and OER, respectively. Density functional theory calculations indicate that the SA-NP cooperation synergy endows the Ir_SA-Pt_NP catalyst to surpass the bifunctional catalytic activity limit of Pt-Ir NPs. This work provides a novel strategy for the construction of high-performing dual catalyst through designing the single atom anchoring on NPs. © 2023 The Authors.

Original language	English
Article number	e12351
Journal	EcoMat
Volume	5
Issue number	7
Online published	25 Apr 2023
DOIs	https://doi.org/10.1002/eom2.12351
Publication status	Published - Jul 2023
Externally published	Yes

Funding

This work was supported by the National Natural Science Foundation of China (No. 22279079, 22075203, 21905179), Guangdong Science and Technology Department Program (2021QN02L252), Shenzhen Science and Technology Programs (No. 20220810133521001, 20220809165014001), Natural Science Foundation of SZU (000002111605, 000002112215), Natural Sciences and Engineering Research Council of Canada (NSERC), Canada Research Chair (CRC) Program, Canada Foundation for Innovation (CFI) and the University of Western Ontario. We also want to acknowledge Canadian Light Source at University of Saskatchewan (CLS), Canadian Urban Transit Research and Innovation Consortium (CUTRIC) project and Ballard Power Systems Inc.

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Research Keywords

atomic layer deposition
electrochemical oxygen reaction
Pt-Ir dual catalyst
singleatom-nanoparticle cooperation

Publisher's Copyright Statement

This full text is made available under CC-BY 4.0. https://creativecommons.org/licenses/by/4.0/

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title = "Single-atom surface anchoring strategy via atomic layer deposition to achieve dual catalysts with remarkable electrochemical performance",

abstract = "Pt-Ir catalysts have been widely applied in unitized regenerative fuel cells due to their great activity for the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER). However, the application of noble metals is seriously hindered by their high cost and low abundance. To reduce the noble metals loading and catalyst cost, the atomic layer deposition is applied to selectively surface anchoring of Ir single atoms (SA) on Pt nanoparticles (NP). With the formation of SA-NP composite structure, the IrSA-PtNP catalyst exhibits significantly improved performance, achieving 2.0- and 90-times mass activity by comparison with the benchmark Pt/C catalyst for the ORR and OER, respectively. Density functional theory calculations indicate that the SA-NP cooperation synergy endows the IrSA-PtNP catalyst to surpass the bifunctional catalytic activity limit of Pt-Ir NPs. This work provides a novel strategy for the construction of high-performing dual catalyst through designing the single atom anchoring on NPs. {\textcopyright} 2023 The Authors. ",

keywords = "atomic layer deposition, electrochemical oxygen reaction, Pt-Ir dual catalyst, singleatom-nanoparticle cooperation",

author = "Zhongxin Song and Qi Wang and Junjie Li and Keegan Adair and Ruying Li and Lei Zhang and Meng Gu and Xueliang Sun",

year = "2023",

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doi = "10.1002/eom2.12351",

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Single-atom surface anchoring strategy via atomic layer deposition to achieve dual catalysts with remarkable electrochemical performance. / Song, Zhongxin (Co-first Author); Wang, Qi (Co-first Author); Li, Junjie et al.
In: EcoMat, Vol. 5, No. 7, e12351, 07.2023.

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

TY - JOUR

T1 - Single-atom surface anchoring strategy via atomic layer deposition to achieve dual catalysts with remarkable electrochemical performance

AU - Song, Zhongxin

AU - Wang, Qi

AU - Li, Junjie

AU - Adair, Keegan

AU - Li, Ruying

AU - Zhang, Lei

AU - Gu, Meng

AU - Sun, Xueliang

PY - 2023/7

Y1 - 2023/7

N2 - Pt-Ir catalysts have been widely applied in unitized regenerative fuel cells due to their great activity for the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER). However, the application of noble metals is seriously hindered by their high cost and low abundance. To reduce the noble metals loading and catalyst cost, the atomic layer deposition is applied to selectively surface anchoring of Ir single atoms (SA) on Pt nanoparticles (NP). With the formation of SA-NP composite structure, the IrSA-PtNP catalyst exhibits significantly improved performance, achieving 2.0- and 90-times mass activity by comparison with the benchmark Pt/C catalyst for the ORR and OER, respectively. Density functional theory calculations indicate that the SA-NP cooperation synergy endows the IrSA-PtNP catalyst to surpass the bifunctional catalytic activity limit of Pt-Ir NPs. This work provides a novel strategy for the construction of high-performing dual catalyst through designing the single atom anchoring on NPs. © 2023 The Authors.

AB - Pt-Ir catalysts have been widely applied in unitized regenerative fuel cells due to their great activity for the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER). However, the application of noble metals is seriously hindered by their high cost and low abundance. To reduce the noble metals loading and catalyst cost, the atomic layer deposition is applied to selectively surface anchoring of Ir single atoms (SA) on Pt nanoparticles (NP). With the formation of SA-NP composite structure, the IrSA-PtNP catalyst exhibits significantly improved performance, achieving 2.0- and 90-times mass activity by comparison with the benchmark Pt/C catalyst for the ORR and OER, respectively. Density functional theory calculations indicate that the SA-NP cooperation synergy endows the IrSA-PtNP catalyst to surpass the bifunctional catalytic activity limit of Pt-Ir NPs. This work provides a novel strategy for the construction of high-performing dual catalyst through designing the single atom anchoring on NPs. © 2023 The Authors.

KW - atomic layer deposition

KW - electrochemical oxygen reaction

KW - Pt-Ir dual catalyst

KW - singleatom-nanoparticle cooperation

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U2 - 10.1002/eom2.12351

DO - 10.1002/eom2.12351

M3 - RGC 21 - Publication in refereed journal

SN - 2567-3173

VL - 5

JO - EcoMat

JF - EcoMat

IS - 7

M1 - e12351

ER -

Single-atom surface anchoring strategy via atomic layer deposition to achieve dual catalysts with remarkable electrochemical performance

Abstract

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UN SDGs

Research Keywords

Publisher's Copyright Statement

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