Pd–Sb Rhombohedra with an Unconventional Rhombohedral Phase as a Trifunctional Electrocatalyst - Details

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Crystal　phase　engineering　is　an　important　strategy　for　designing　noble-metal-based　catalysts　with　optimized　activity　and　stability.　From　the　thermodynamic　point　of　view,　it　remains　a　great　challenge　to　synthesize　unconventional　phases　of　noble　metals.　Here,　a　new　class　of　Pd-based　nanostructure　with　unconventional　rhombohedral　Pd20Sb7　phase　is　successfully　synthesized.　Benefiting　from　the　high　proportion　of　the　unique　exposed　Pd20Sb7　(003)　surface,　Pd20Sb7　rhombohedra　display　much　enhanced　ethanol　oxidation　reaction　(EOR)　and　oxygen　reduction　reaction　performance　compared　with　commercial　Pd/C.　Moreover,　Pd20Sb7　rhombohedra　are　also　demonstrated　as　an　effective　air　cathode　in　non-aqueous　Li–air　batteries　with　an　overpotential　of　only　0.24 V.　Density　functional　theory　calculations　reveal　that　the　unique　exposed　facets　of　Pd20Sb7　rhombohedra　can　not　only　reduce　the　excessive　adsorption　of　CH3CO*　to　CH3COOH　on　Pd　for　promoting　EOR　process,　but　also　weaken　CO　binding　and　CO　poisoning.　This　work　provides　a　new　class　of　unconventional　intermetallic　nanomaterials　with　enhanced　electrocatalytic　activity.　©　2022　Wiley-VCH　GmbH.

Keyword：

Antimony compounds Catalyst activity Density functional theory Electrocatalysts Electrolytic reduction Ethanol Oxygen Palladium compounds Precious metals

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[ 1 ] [Xu, Bingyan]State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen; 361005, China
[ 2 ] [Liu, Tianyang]Jiangsu Collaborative Innovation Centre of Biomedical Functional Materials, Jiangsu Key Laboratory of New Power Batteries, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing; 210023, China
[ 3 ] [Liang, Xiaocong]State Key Laboratory of Photocatalysis on Energy and Environment College of Chemistry, Fuzhou University, Fuzhou; 350116, China
[ 4 ] [Dou, Wenjie]State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen; 361005, China
[ 5 ] [Geng, Hongbo]School of Materials Engineering, Changshu Institute of Technology, Changshu; 215500, China
[ 6 ] [Yu, Zhiyang]State Key Laboratory of Photocatalysis on Energy and Environment College of Chemistry, Fuzhou University, Fuzhou; 350116, China
[ 7 ] [Li, Yafei]Jiangsu Collaborative Innovation Centre of Biomedical Functional Materials, Jiangsu Key Laboratory of New Power Batteries, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing; 210023, China
[ 8 ] [Zhang, Ying]Institute for Carbon Neutralization, College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou; 325035, China
[ 9 ] [Shao, Qi]College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Jiangsu; 215123, China
[ 10 ] [Fan, Jingmin]State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen; 361005, China
[ 11 ] [Huang, Xiaoqing]State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen; 361005, China

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Source ：

Advanced Materials

ISSN： 0935-9648

Year： 2022

Issue： 50

Volume： 34

2 9 . 4

JCR@2022

2 7 . 4 0 0

JCR@2023

ESI HC Threshold：91

JCR Journal Grade：1

CAS Journal Grade：1

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WoS CC Cited Count：

SCOPUS Cited Count： 37

ESI Highly Cited Papers on the List： 0 Unfold All

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30 Days PV： 0

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