Promoting the Electrocatalytic Ethanol Oxidation Activity of Pt by Alloying with Cu

Di Liu; Hui Zi Huang; Zhejiaji Zhu; Jiani Li; Li Wei Chen; Xiao Ting Jing; An Xiang Yin

doi:10.3390/catal12121562

Promoting the Electrocatalytic Ethanol Oxidation Activity of Pt by Alloying with Cu

Di Liu, Hui Zi Huang, Zhejiaji Zhu, Jiani Li, Li Wei Chen, Xiao Ting Jing, An Xiang Yin^*

^*Corresponding author for this work

School of Chemistry and Chemical Engineering

Beijing Institute of Technology

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

3 Citations (Scopus)

Abstract

The development and commercialization of direct ethanol fuel cells requires active and durable electro-catalysts towards the ethanol oxidation reactions (EOR). Rational composition and morphology control of Pt-based alloy nanocrystals can not only enhance their EOR reactivity but also reduce the consumption of precious Pt. Herein, PtCu nanocubes (NCs)/CB enclosed by well-defined (100) facets were prepared by solution synthesis, exhibiting much higher mass activity (4.96 A mg_Pt⁻¹) than PtCu nanoparticles (NPs)/CB with irregular shapes (3.26 A mg_Pt⁻¹) and commercial Pt/C (1.67 A mg_Pt⁻¹). CO stripping and in situ Fourier transform infrared spectroscopy (FTIR) experiments indicate that the alloying of Cu enhanced the adsorption of ethanol, accelerated the subsequent oxidation of intermediate species, and increased the resistance to CO poisoning of PtCu NCs/CB, as compared with commercial Pt/C. Therefore, alloying Pt with earth-abundant Cu under rational composition and surface control can optimize its surface and electronic structures and represents a promising strategy to promote the performance of electro-catalysts while reduce the use of precious metals.

Original language	English
Article number	1562
Journal	Catalysts
Volume	12
Issue number	12
DOIs	https://doi.org/10.3390/catal12121562
Publication status	Published - Dec 2022

Keywords

Pt–Cu alloy
electrocatalysis
ethanol oxidation reaction
in situ FTIR
nanocubes

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title = "Promoting the Electrocatalytic Ethanol Oxidation Activity of Pt by Alloying with Cu",

abstract = "The development and commercialization of direct ethanol fuel cells requires active and durable electro-catalysts towards the ethanol oxidation reactions (EOR). Rational composition and morphology control of Pt-based alloy nanocrystals can not only enhance their EOR reactivity but also reduce the consumption of precious Pt. Herein, PtCu nanocubes (NCs)/CB enclosed by well-defined (100) facets were prepared by solution synthesis, exhibiting much higher mass activity (4.96 A mgPt−1) than PtCu nanoparticles (NPs)/CB with irregular shapes (3.26 A mgPt−1) and commercial Pt/C (1.67 A mgPt−1). CO stripping and in situ Fourier transform infrared spectroscopy (FTIR) experiments indicate that the alloying of Cu enhanced the adsorption of ethanol, accelerated the subsequent oxidation of intermediate species, and increased the resistance to CO poisoning of PtCu NCs/CB, as compared with commercial Pt/C. Therefore, alloying Pt with earth-abundant Cu under rational composition and surface control can optimize its surface and electronic structures and represents a promising strategy to promote the performance of electro-catalysts while reduce the use of precious metals.",

keywords = "Pt–Cu alloy, electrocatalysis, ethanol oxidation reaction, in situ FTIR, nanocubes",

author = "Di Liu and Huang, {Hui Zi} and Zhejiaji Zhu and Jiani Li and Chen, {Li Wei} and Jing, {Xiao Ting} and Yin, {An Xiang}",

note = "Publisher Copyright: {\textcopyright} 2022 by the authors.",

year = "2022",

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doi = "10.3390/catal12121562",

language = "English",

volume = "12",

journal = "Catalysts",

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T1 - Promoting the Electrocatalytic Ethanol Oxidation Activity of Pt by Alloying with Cu

AU - Liu, Di

AU - Huang, Hui Zi

AU - Zhu, Zhejiaji

AU - Li, Jiani

AU - Chen, Li Wei

AU - Jing, Xiao Ting

AU - Yin, An Xiang

PY - 2022/12

Y1 - 2022/12

N2 - The development and commercialization of direct ethanol fuel cells requires active and durable electro-catalysts towards the ethanol oxidation reactions (EOR). Rational composition and morphology control of Pt-based alloy nanocrystals can not only enhance their EOR reactivity but also reduce the consumption of precious Pt. Herein, PtCu nanocubes (NCs)/CB enclosed by well-defined (100) facets were prepared by solution synthesis, exhibiting much higher mass activity (4.96 A mgPt−1) than PtCu nanoparticles (NPs)/CB with irregular shapes (3.26 A mgPt−1) and commercial Pt/C (1.67 A mgPt−1). CO stripping and in situ Fourier transform infrared spectroscopy (FTIR) experiments indicate that the alloying of Cu enhanced the adsorption of ethanol, accelerated the subsequent oxidation of intermediate species, and increased the resistance to CO poisoning of PtCu NCs/CB, as compared with commercial Pt/C. Therefore, alloying Pt with earth-abundant Cu under rational composition and surface control can optimize its surface and electronic structures and represents a promising strategy to promote the performance of electro-catalysts while reduce the use of precious metals.

AB - The development and commercialization of direct ethanol fuel cells requires active and durable electro-catalysts towards the ethanol oxidation reactions (EOR). Rational composition and morphology control of Pt-based alloy nanocrystals can not only enhance their EOR reactivity but also reduce the consumption of precious Pt. Herein, PtCu nanocubes (NCs)/CB enclosed by well-defined (100) facets were prepared by solution synthesis, exhibiting much higher mass activity (4.96 A mgPt−1) than PtCu nanoparticles (NPs)/CB with irregular shapes (3.26 A mgPt−1) and commercial Pt/C (1.67 A mgPt−1). CO stripping and in situ Fourier transform infrared spectroscopy (FTIR) experiments indicate that the alloying of Cu enhanced the adsorption of ethanol, accelerated the subsequent oxidation of intermediate species, and increased the resistance to CO poisoning of PtCu NCs/CB, as compared with commercial Pt/C. Therefore, alloying Pt with earth-abundant Cu under rational composition and surface control can optimize its surface and electronic structures and represents a promising strategy to promote the performance of electro-catalysts while reduce the use of precious metals.

KW - Pt–Cu alloy

KW - electrocatalysis

KW - ethanol oxidation reaction

KW - in situ FTIR

KW - nanocubes

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DO - 10.3390/catal12121562

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VL - 12

JO - Catalysts

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IS - 12

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ER -

Promoting the Electrocatalytic Ethanol Oxidation Activity of Pt by Alloying with Cu

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