Atomic Diffusion Engineered PtSnCu Nanoframes with High-Index Facets Boost Ethanol Oxidation

Tang，Min1,2; Sun，Mingzi3; Chen，Wen1; Ding，Yutian1; Fan，Xiaokun2; Wu，Xiaoyu4; Fu，Xian Zhu1; Huang，Bolong3; Luo，Shuiping1,2; Luo，Jing Li1

2024-05-23

10.1002/adma.202311731

Advanced Materials   影响因子和分区

0935-9648

1521-4095

Electrochemical ethanol oxidation is crucial to directly convert a biorenewable liquid fuel with high energy density into electrical energy, but it remains an inefficient reaction even with the best catalysts. To boost ethanol oxidation, developing multimetallic nanoalloy has emerged as one of the most effective strategies, yet faces a challenge in the rational engineering of multimetallic active-site ensembles at atomic-level. Herein, starting from typical PtCu nanocrystals, an atomic Sn diffusion strategy is developed to construct well-defined PtSnCu octopod nanoframes, which is enclosed by high-index facets of n (111)-(111), such as {331} and {221}. PtSnCu achieves a high mass activity of 3.10 A mg and promotes the C-C bond breaking and oxidation of poisonous CO intermediate, representing a state-of-the-art electrocatalyst toward ethanol oxidation in acidic electrolyte. Density functional theory （DFT） calculations have confirmed that the introduction of Sn improves the electroactivity by uplifting the d-band center through the s-p-d coupling. Meanwhile, the strong binding of ethanol and the reduced energy barrier of CO oxidation guarantee a highly efficient ethanol oxidation process with improved Faradic efficiency of C1 products. This work offers a promising strategy for constructing novel multimetallic nanoalloys tailored by atomic metal sites as the efficient electrocatalysts.

atomic diffusion electrocatalysis ethanol oxidation high-index facets nanoframes

SCI ; EI

英语

其他

MATERIALS SCIENCE

2-s2.0-85185925716

Scopus

1.Shenzhen Key Laboratory of Energy Electrocatalytic Materials,College of Materials Science and Engineering,Shenzhen University,Shenzhen,Guangdong,518055,China
2.Department of Chemistry,Guangdong Provincial Key Laboratory of Energy Materials for Electric Power,Southern University of Science and Technology (SUSTech),Shenzhen,Guangdong,518055,China
3.Department of Applied Biology and Chemical Technology,The Hong Kong Polytechnic University,Kowloon,999077,Hong Kong
4.The New Energy Automotive Technology Research Institute,Shenzhen Polytechnic University,Shenzhen,518055,China

Tang，Min,Sun，Mingzi,Chen，Wen,et al. Atomic Diffusion Engineered PtSnCu Nanoframes with High-Index Facets Boost Ethanol Oxidation[J]. Advanced Materials,2024,36(21).

Tang，Min.,Sun，Mingzi.,Chen，Wen.,Ding，Yutian.,Fan，Xiaokun.,...&Luo，Jing Li.(2024).Atomic Diffusion Engineered PtSnCu Nanoframes with High-Index Facets Boost Ethanol Oxidation.Advanced Materials,36(21).

Tang，Min,et al."Atomic Diffusion Engineered PtSnCu Nanoframes with High-Index Facets Boost Ethanol Oxidation".Advanced Materials 36.21(2024).