Preparation Of Mesoporous Carbon Based ORR Catalysts And Lithium Ion Battery Anode Materials

Recently,ordered mesoporous carbon(OMC)which has high specific surface area,good conductivity,excellent chemical stability,ordered pore size distribution,special spatial confinement effect and good catalytic activity shows a huge application prospects in fuel cell,Zinc-air batteries,lithium-ion batteries and other fields of electrochemistry.At the same time,OMC provides an ideal emerging catalyst carrier.People also take advantage of its space limiting effect to control the growth of nanoparticles and suppress the agglomeration of nanoparticles.Therefore it is an effective way to prepare nanoparticles with good dispersibility and is often used as nano-reaction sites with high catalytic activity.Thus,with excellent electrochemical properties such as excellent electrical conductivity of OMC and high specific surface area,combined with the uniform spatial distribution of the highly dispersed nanoparticles,the utilization of the particles has greatly increased to improve the composition Overall performance,which has great prospects for development in the field of catalytic and electrical analysis.In this paper,we have systematically studied the preparation,catalysis and electrochemical properties of ordered mesoporous carbon-based functional materials.The specific research contents are as follows:(1)First,we synthesized the mesoporous molecular sieve SBA-15 by the traditional method which as a rigid template,then the dissolved polyacrylonitrile(PAN)was impregnated into the mesoporous silica template through the wet impregnation method.After the process of high temperature carbonization and wash template,mesoporous carbon CMK-3(P-CMK-3)is obtained by using polyacrylonitrile(PAN)as the precursor.In contrast,sucrose was used as precursor for the preparation of mesoporous carbon(S-CMK-3).Compared to S-CMK-3 in the fuel cell cathode material catalyst has been excellent performance.(2)The furfuryl alcohol was polymerized in the hard template SBA-15 at determined temperature and then carbonized at high temperature to obtain CMK-5@SBA-15.The Co Fe2O4@CMK-5 with a "pea pod" structure was obtained via metal casting process after the template was washed off.The excellent electrochemical performance of Co Fe2O4@CMK-5 as the anode material is well reflected in lithium ion battery.