电化学2017，Vol.23Issue(2)：170-179,10.DOI:10.13208/j.electrochem.161243
Nafion含量与阴离子吸附对于铂单原子层核壳结构催化剂制备的影响
Impact of Nafion Loading and Anion Adsorption on the Synthesis of Pt Monolayer Core-Shell Catalysts
杨莉君 1Dustin Banham 2Elod Gyenge 1叶思宇2
作者信息
- 1. 巴拉德动力系统,9000 Glenlyon Parkway,Burnaby,英属哥伦比亚省,加拿大,V5J 5J8
- 2. 化学与生物工程学院,英属哥伦比亚大学,2360 East Mall,温哥华,英属哥伦比亚省,加拿大,V6T 1Z3
- 折叠
摘要
Abstract
Carbon supported palladium (Pd) nanoparticles were used as a model core material for the synthesis of platinum (Pt) monolayer core-shell catalysts using rotating disk electrode method and a copper (Cu) under potential deposition technique.The impact of Nafion on the synthesis process was revealed by electrochemical testing with various Nafion contents.The existence of Nafion influenced the Cu under potential deposition,galvanic replacement and eventually the oxygen reduction reaction activity of the core-shell catalyst.However,as long as the Nafion content was less than 5wt％ in the test film,adding Nafion could help to bind catalyst onto the surface of electrode while maintaining promising catalytic activity.Unique anion adsorption/desorption peaks were observed on the surface of Pd in H2SO4 solution,which turned out to be an useful indicator to evaluate the impact of Nafion on the synthesis of the core-shell catalysts.关键词
核壳结构催化剂/氧气还原反应/铜欠电位沉积/Nafion含量/阴离子吸附Key words
core-shell catalyst/oxygen reduction reaction/copper under potential deposition/Nafion content/anions adsorption分类
化学化工引用本文复制引用
杨莉君,Dustin Banham,Elod Gyenge,叶思宇..Nafion含量与阴离子吸附对于铂单原子层核壳结构催化剂制备的影响[J].电化学,2017,23(2):170-179,10.
