Atomically dispersed NiO_(x) cluster on high-index Pt facets boost ethanol electrooxidation through long-range synergistic sites  

作　　者：Yao Wang Meng Zheng Yunrui Li Lidan Zhu Haoran Li Qishun Wang Hui Zhao Jiawei Zhang Yuming Dong Yongfa Zhu 

机构地区：[1]Key Laboratory of Synthetic and Biological Colloids,Ministry of Education,School of Chemical and Material Engineering,Jiangnan University,Wuxi 214122,China [2]College of Materials Science and Engineering,Shenzhen University,Shenzhen 518060,China [3]Department of Chemical Engineering,Tsinghua University,Beijing 100084,China [4]State Key Laboratory of Rare Earth Resource Utilization,Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun 130022,China [5]Department of Chemistry,Tsinghua University,Beijing 100084,China

出　　处：《Advanced Powder Materials》2024年第6期142-149,共8页先进粉体材料(英文)

基　　金：supported by the National Natural Science Foundation of China(22305101);the Natural Science Foundation of Jiangsu Province(BK20231032);the Fundamental Research Funds for the Central Universities(JUSRP123020);Startup Funding at Jiangnan University(1045219032220100).

摘　　要：Constructing the desired long-range dual sites to enhance the C–C bond-cleavage and CO-tolerate ability during ethanol oxidation reaction is of importance for further applications.Herein,the concept of holding atomically dispersed NiO_(x)cluster supported on Pt-based high-index facets(NiO_(x)/Pt)is proposed to build O-bridged Pt–Ni dual sites.Strikingly,the obtained NiO_(x)/Pt dual sites show 4.97 times specific activity higher than that of commercial Pt/C(0.35 mA cm^(-2)),as well as outstanding CO-tolerance and durability.The advanced electrochemical in-situ characterizations reveal that the NiO_(x)/Pt can accelerate rapid dehydroxylation and C–C bondcleavage over the Pt–Ni dual sites.Theoretical calculations disclose that the atomically dispersed NiO_(x)species can lower the adsorption/reaction energy barriers of intermediates.This tactic provides a promising methodology on regulating the surface synergistic sites via engineering atomically dispersed oxide site.

关 键 词：Atomically dispersed cluster NiO_(x)/Pt Ethanol electrooxidation C-C bond-cleavage CO resistance 

分 类 号：O64[理学—物理化学]