典型文献
PtRu nanoparticles supported on noble carbons for ethanol electrooxidation
文献摘要：
In this work,three cytosine derived nitrogen doped carbonaceous materials(noble carbons,NCs)with different atomic C/N ratios and porous networks have been synthesized and used as supports for PtRu electrocatalysts in the ethanol oxidation reaction(EOR)for clean hydrogen production.Both,the metal phase and the carbon support play critical roles in the electrocatalysts final performance.Lower NPs size distribution was obtained over supports with low atomic C/N ratios(i.e.,4 and 6)and defined porosity(i.e.,1701 m2 g-1 for PtRu/CNZ and 1834 m2 g-1 for PtRu/CLZ,respectively).In contrast,a lower C/N ratio and poor porous network(i.e.,65 m2 g-1,PtRu/CLK)led to the largest particle size and fostered an increase of the alloying degree between Pt and Ru NPs(i.e.,3％for C/N～6 and 28％for C/N～3).Electrochemical active surface area was found to increase with decreasing NPs size and the alloy extent,due to a higher availability of Pt active sites.Accelerated degradation tests showed that PtRu/NCs outper-form similar to PtRu NPs on commercial carbon pointing at the stabilizing effect of NCs.PtRu/CNZ exhib-ited the best electrochemical performance(i.e.,69.1 mA mgpt-1),outperforming PtRu/CLZ and PtRu/CLK by 3-and 9-fold,respectively,due to a suitable compromise between particle sizes,degree of alloy,textural properties and elemental composition.Best anodes were scaled-up to a proton exchange membrane cell and PtRu/CNZ was proved to provide the best electrocatalytic activity(262 mA cm-2 and low energy requirements),matching the values obtained by the state of the art of EOR electrocatalysts.
文献关键词：
中图分类号：
作者姓名：
Alberto Rodríguez-Gómez;Enrico Lepre;Luz Sánchez-Silva;Nieves López-Salas;Ana Raquel de la Osa
作者机构：
Faculty of Chemical Sciences and Technologies,University of Castilla-La Mancha,Enrique Costa Novella Building.Avda.Camilo Jose Cela,12,13071 Ciudad Real,Spain;Colloid Chemistry Department,Max Planck Institute of Colloids and Interfaces,Am Mühlenberg 1,14476 Potsdam,Germany
文献出处：
引用格式：
[1]Alberto Rodríguez-Gómez;Enrico Lepre;Luz Sánchez-Silva;Nieves López-Salas;Ana Raquel de la Osa-.PtRu nanoparticles supported on noble carbons for ethanol electrooxidation)[J].能源化学,2022(03):168-180
A类：
CNZ,mgpt
B类：
PtRu,nanoparticles,supported,noble,carbons,ethanol,electrooxidation,In,this,three,cytosine,derived,nitrogen,doped,carbonaceous,materials,NCs,different,atomic,ratios,porous,networks,have,been,synthesized,used,supports,electrocatalysts,reaction,EOR,clean,hydrogen,production,Both,metal,phase,play,critical,roles,final,performance,Lower,NPs,distribution,was,obtained,over,defined,porosity,CLZ,respectively,contrast,lower,poor,CLK,largest,fostered,increase,alloying,degree,between,Electrochemical,active,surface,area,found,decreasing,extent,due,higher,availability,sites,Accelerated,degradation,tests,showed,that,similar,commercial,pointing,stabilizing,effect,exhib,ited,best,electrochemical,mA,outperforming,by,fold,suitable,compromise,sizes,textural,properties,elemental,composition,Best,anodes,were,scaled,proton,exchange,membrane,cell,proved,provide,electrocatalytic,activity,energy,requirements,matching,values,state
AB值：
0.520102
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