Evidence map›Paper›PMID 39119219›Full record

ArticleNational science review2024

Semimetal-triggered covalent interaction in Pt-based intermetallics for fuel-cell electrocatalysis.

Han Cheng, Renjie Gui, Chen Chen, Si Liu, Xuemin Cao, Yifan Yin, Ruize Ma, Wenjie Wang, Tianpei Zhou, Xusheng Zheng and 3 more

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Article in National science review, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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1 · What the graph read from it

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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

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3 · Its place in the literature

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4 · The record

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5 · Who and what money

Authors and funding

13 authors.

Han ChengKey Laboratory of Precision and Intelligent Chemistry, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei 230029, China.
Renjie GuiKey Laboratory of Precision and Intelligent Chemistry, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei 230029, China.
Chen ChenNational Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, China.
Si LiuChemistry Experiment Teaching Center, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei 230029, China.
Xuemin CaoKey Laboratory of Precision and Intelligent Chemistry, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei 230029, China.
Yifan YinKey Laboratory of Precision and Intelligent Chemistry, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei 230029, China.
Ruize MaKey Laboratory of Precision and Intelligent Chemistry, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei 230029, China.
Wenjie WangNational Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, China.
Tianpei ZhouKey Laboratory of Precision and Intelligent Chemistry, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei 230029, China.
Xusheng ZhengNational Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, China.
Wangsheng ChuNational Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, China.
Yi XieKey Laboratory of Precision and Intelligent Chemistry, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei 230029, China.
Changzheng WuKey Laboratory of Precision and Intelligent Chemistry, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei 230029, China.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Platinum-based intermetallic compounds (IMCs) play a vital role as electrocatalysts in a range of energy and environmental technologies, such as proton exchange membrane fuel cells. However, the synthesis of IMCs necessitates recombination of ordered Pt-M metallic bonds with high temperature driving, which is generally accompanied by side effects for catalysts' structure and performance. In this work, we highlight that semimetal atoms can trigger covalent interactions to break the synthesis-temperature limitation of platinum-based intermetallic compounds and benefit fuel-cell electrocatalysis. Attributed to partial fillings of p-block in semimetal elements, the strong covalent interaction of d-p π backbonding can benefit the recombination of ordered Pt-M metallic bonds (PtGe, PtSb and PtTe) in the synthesis process. Moreover, this covalent interaction in metallic states can further promote both electron transport and orbital fillings of active sites in fuel cells. The semimetal-Pt IMCs were obtained with a temperature 300 K lower than that needed for the synthesis of metal-Pt intermetallic compounds and reached the highest CO-tolerant oxygen reduction activity (0.794 A mg

Indexed as

CO tolerancecovalent interactionfuel cellsoxygen reduction reactionPt intermetallicssemimetals

Identifiers

PMID39119219
PMCPMC11308177

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