Ligand-free monophasic CuPd alloys endow boosted reaction kinetics toward energy-efficient hydrogen fuel production paired with hydrazine oxidation  

作　　者：Yujeong Jeong Shreyanka Shankar Naik Yiseul Yu Jayaraman Theerthagiri Seung Jun Lee Pau Loke Show Hyun Chul Choi Myong Yong Choi 

机构地区：[1]Department of Chemistry(BK21 FOUR),Research Institute of Natural Sciences,Gyeongsang National University,Jinju 52828,Republic of Korea [2]Core-Facility Center for Photochemistry&Nanomaterials,Gyeongsang National University,Jinju 52828,Republic of Korea [3]Zhejiang Provincial Key Laboratory for Subtropical Water Environment and Marine Biological Resources Protection,Wenzhou University,Wenzhou 325035,China [4]Department of Chemical and Environmental Engineering,Faculty of Science and Engineering,University of Nottingham Malaysia,Jalan Broga,43500 Semenyih,Selangor Darul Ehsan,Malaysia [5]Department of Chemistry,Chonnam National University,Gwangju 61186,Republic of Korea

出　　处：《Journal of Materials Science & Technology》2023年第12期20-29,共10页材料科学技术（英文版）

基　　金：supported by Korea Basic Science Institute (National research Facilities and Equipment Center)grant funded by the Ministry of Education. (Nos.2019R1A6C1010042,2021R1A6C103A427);support from National Research Foundation of Korea (NRF), (Nos.2022R1A2C2010686,2022R1A4A3033528,2020R1I1A1A01065748,2021R1I1A1A01060380).

摘　　要：Optimizing the structure and components is a prevalent strategy for increasing electrocatalytic energy-saving H 2 fuel production.One of the sustainable and efficient techniques is electrocatalytic water split-ting for H 2 generation,but it is still restricted by the kinetically sluggish OER.Due to the lower standard oxidation potential of−0.33 V,replacing the OER with anodic hydrazine oxidation reaction(HzOR)is an effective way to extensively reduce the use of electricity in water electrolysis.Through alloying,the semiconductor and adsorption characteristics of Cu,interlaced by Pd 2+solution on the Pd surface by pulsed laser ablation(PLA)in methanol,are selectively altered to maximize cathodic HER and anodic HzOR performance.The optimal Cu1Pd3/C ratio demonstrates outstanding HER performance with a low overpotential of 0.315 V at 10 mA cm^(−2),as well as an ultralow overpotential of 0.560 V for HzOR in 0.5 M N_(2) H_(4)/1.0 M KOH.Furthermore,the constructed HzOR-assisted electrolyzer cell with Cu1Pd3/C||Cu1Pd3/C as anode and cathode exhibits a cell voltage of 0.505 V at 10 mA cm^(−2) with exceptional en-durance over 5 h.The current study advances competent CuPd alloys as multifunctional electrocatalysts for H 2 fuel production using a HzOR-assisted energy-efficient electrolyzer.

关 键 词：PLA CuPd alloy Sonochemical process HzOR Hydrazine evolution reaction Hydrazine splitting Water splitting 

分 类 号：TQ426[化学工程] TQ116.2[一般工业技术—材料科学与工程] TB383.1