Alcohol fuel electro-reforming is promising for green hydrogen generation while developing efficient bifunctional catalysts for alcohol fuel electrolysis is still very tricky.Herein,we for the first time proposed the electron-enriched Pt induced by CoSe2 has an efficient bi-functional catalytic ability for alcohol fuels electro-reforming of hydrogen in acid electrolytes.The theoretical calculation revealed the advantages of electron-enriched Pt surface for the adsorption of intermediate,which is well supported by spectroscopic analysis and CO-stripping techniques.Largely improved catalytic performances of activity,durability,and kinetics are demonstrated compared to the conventional alloy system and commercial Pt/C catalyst,due to the efficient synergism of Pt and CoSe2;the peak current density of Pt/CoSe2 for methanol(ethanol)oxidation is 87.61(48.27)mA cm-2,which is about 3.3(2.0)times higher than that of Pt/C catalyst and 2.0(1.5)times that of the traditional PtCo alloy catalysts.Impressively,about 80％of the initial cur-rent was found after 1000 cycles of stability test for alcohol fuel oxidation of Pt/CoSe2 catalyst,higher than that of Pt/C(ca.50％)and PtCo catalyst(65％).When Pt/CoSe2 catalyst serviced as bi-functional cat-alysts for electrolyzer,a low cell potential of 0.65(0.78)V for methanol(ethanol)electrolysis was required to reach 10 mA cm-2,which was about 1030(900)mV less than that of conventional water elec-trolysis using Pt/C as the catalyst.The current result is instructive for the design of novel bifunctional cat-alyst and the understanding of hydrogen generation via alcohol fuel electro-reforming.

Yang Zhou;Qiaowei Wang;Xinlong Tian;Jinfa Chang;Ligang Feng

School of Chemistry and Chemical Engineering,Yangzhou University,Yangzhou 225002,Jiangsu,China;State Key Laboratory of Marine Resource Utilization in South China Sea,Hainan Provincial Key Lab of Fine Chemistry,School of Chemical Engineering and Technology,Hainan University,Haikou 570228,Hainan,China;NanoScience Technology Center,University of Central Florida,Orlando,FL 32826,USA

能源化学

[1]Yang Zhou;Qiaowei Wang;Xinlong Tian;Jinfa Chang;Ligang Feng-.Electron-enriched Pt induced by CoSe2 promoted bifunctional catalytic ability for low carbon alcohol fuel electro-reforming of hydrogen evolution)[J].能源化学,2022(12):46-54

PtCo,trolysis

Electron,enriched,induced,by,CoSe2,promoted,bifunctional,catalytic,low,carbon,alcohol,reforming,hydrogen,evolution,Alcohol,promising,green,generation,while,developing,efficient,catalysts,electrolysis,still,very,tricky,Herein,first,proposed,electron,has,fuels,acid,electrolytes,theoretical,calculation,revealed,advantages,surface,adsorption,intermediate,which,well,supported,spectroscopic,analysis,stripping,techniques,Largely,improved,performances,activity,durability,kinetics,demonstrated,compared,conventional,alloy,system,commercial,due,synergism,peak,current,density,methanol,oxidation,mA,about,times,higher,that,traditional,Impressively,initial,was,found,after,cycles,stability,test,When,serviced,electrolyzer,cell,potential,required,reach,mV,less,water,using,result,instructive,design,novel,understanding,via

0.415865