介孔载体催化剂的制备及膜电极的性能
Preparation of mesoporous carrier catalysts and performance of membrane electrode
杨代辉 1马东伟 1史晓斐 1陈晓涛1
作者信息
- 1. 贵州梅岭电源有限公司,特种化学电源全国重点实验室,贵州 遵义 563003
- 折叠
摘要
Pt基催化剂具有高效催化氧还原反应(ORR)的作用,是燃料电池大规模商业化应用的关键材料.通过空气助烧,在高温环境下,将质子酸盐[pPDA][2HSO4]制成具有丰富含氧官能团的介孔碳(MC)材料,再用乙二醇还原氯铂酸,在MC载体上负载Pt颗粒,最后,在氢氩混合气氛中高温处理,得到具有高效ORR催化性能的负载Pt颗粒的介孔碳材料催化剂(Pt/MC).制备的Pt/MC在催化ORR时的半波电位达到0.898 V(vs.RHE),电化学活性面积达到96 m2/g,半波电位和电化学活性面积比商业化Pt/C催化剂分别正 0.011 V和高 10 m2/g.制备的Pt/MC在膜电极测试中,0.65 V条件下的额定功率密度达到 1 041 mW/cm2,比商业化Pt/C催化剂高 83 mW/cm2.
Abstract
Pt-based catalysts have the role of efficiently catalyzing the oxygen reduction reaction(ORR),which are key materials for large-scale commercial application of fuel cells.Mesoporous carbon(MC)materials with abundant oxygen-containing functional groups are prepared by air-assisted combustion of protonate[pPDA][2HSO4]under high temperature environment.Then the Pt particles are loaded on MC carriers by ethylene glycol reduction of chloroplatinic acid,finally,high temperature treated in a mixed atmosphere of hydrogen and argon,to obtain the mesoporous carbon catalysts load with Pt particles(Pt/MC)with high efficiency in catalyzing ORR.The prepared Pt/MC achieves a half-wave potential of 0.898 V(vs.RHE)and an electrochemically active area of 96 m2/g in catalytic ORR,with the half-wave potential and electrochemically active area 0.011 V more positive and 10 m2/g higher than that of commercial Pt/C catalysts,respectively.The power density of the prepared Pt/MC in membrane electrode test reaches 1 041 mW/cm2 under 0.65 V,which is 83 mW/cm2 higher than that of the commercial Pt/C catalyst.
关键词
燃料电池/铂基催化剂/氧还原反应(ORR)/介孔碳(MC)材料/膜电极Key words
fuel cell/Pt-based catalyst/oxygen reduction reaction(ORR)/mesoporous carbon(MC)material/membrane electrode引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据