摘要
铂催化剂已经商用化,但存储量稀缺、高成本、稳定性差等缺点,使其无法实现广泛而大规模的应用。因此,寻找新的催化剂具有非常重要的意义。在本论文中,以稀土化合物为催化剂,添加碳纳米管提高电导率,制备稀土负载量为0%、9.1%、12.5%、16.7%、25.0%和100%的镧基稀土/碳纳米管催化剂。采用CV、RDE、RRDE和I-t研究镧基稀土/碳纳米管的氧还原(ORR)催化活性。研究发现,镧基稀土负载量为12.5%的催化剂电极的氧还原催化活性最强。虽然镧基稀土/碳纳米管的ORR活性与20%Pt./C相比较弱,但其耐甲醇毒性强于20%Pt./C。
Platinum based catalysts are has been commercialized,but its natural reserve is scarce,high cost,poor stability restricts its application.Therefore,it is very important to find new catalysts.In this paper,rare earth(RE)composites were applied as electrocatalysts,and carbon nanotubes(CNTs)were added to improve its conductivity.RE/CNTs composites with the RE mass loading of 0%,9.1%,12.5%,16.7%,25.0%and 100%were prepared.CV,RDE,RRDE,I-t are used to measure the catalytic activity of RE/CNTs towards oxygen reduction reaction(ORR).It is found out that 12.5%RE/CNTs exhibits the highest ORR activity.Although the ORR activity of RE/CNTs is weaker than that of 20%Pt./C,the methanol tolerance of RE/CNTs is better.
作者
胡振光
郭路路
吴杜凤
罗志虹
罗鲲
HU Zhen-guang;GUO Lu-lu;WU Du-feng;LUO Zhi-hong;LUO Kun(Chinalco Guangxi Nonferrous Rare Earth Development Co.,Ltd,Nanning,Guangxi Province 530000,China;College of Materials Science and Engineering,Guilin University of Technology,Guilin,Guangxi Province 541004,China;School of Materials Science and Engineering,Changzhou University,Changzhou,Jiangsu Province 213164,China)
出处
《电池工业》
CAS
2019年第1期13-18,共6页
Chinese Battery Industry
基金
广西自然科学基金(2015GXNSFBA139220
2016GXNSFAA380107)
关键词
镧基稀土
碳纳米管
氧还原反应
电催化剂
Lanthanum based rare earth
Carbon nanotube
Oxygen reduction reaction
Electrocatalyst
