文献类型：期刊文献

英文题名：Boosting the performance of formic acid microfluidic fuel cell: Oxygen annealing enhanced Pd@graphene electrocatalyst

作者：Li, Dawei[1];Xu, Hong[1];Zhang, Li[1];Leung, Dennis Y. C.[3];Vilela, Filipe[2];Wang, Huizhi[2];Xuan, Jin[1,2]

机构：[1]East China Univ Sci & Technol, Sch Mech & Power Engn, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[2]Heriot Watt Univ, Sch Engn & Phys Sci, Edinburgh EH14 4AS, Midlothian, Scotland;[3]Univ Hong Kong, Dept Mech Engn, Pokfulam Rd, Hong Kong, Hong Kong, Peoples R China

年份：2016

卷号：41

期号：24

起止页码：10249

外文期刊名：INTERNATIONAL JOURNAL OF HYDROGEN ENERGY

收录：;EI(收录号：20162102423943);WOS:【SCI-EXPANDED(收录号:WOS:000379106200017)】；

基金：This work is supported by National Natural Science Foundation of China (51406057) and RGC/SFC Hong Kong-Scotland Collaborative Research Program (X-HKU710/14, H15009).

语种：英文

外文关键词：Fuel cell; Graphene; Annealing; CO tolerance

摘要：A new oxygen-annealing treatment for Pd supported on graphene was employed to enhance the electro-catalytic performance in formic acid microfluidic fuel cells. Experiments show that both the electro-oxidation reactivity and CO tolerance of the annealed catalyst are significantly improved. When testing the fuel cell, the maximum power density with annealed catalyst is 41% higher than the unannealed Pd@graphene catalyst, and 85% higher than Pd@Vulcan XC-72. This enhancement is attributed to the Pd-O bond formation during the oxygen annealing step, which induces greater CO electro-oxidation reactivity. (C) 2016 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.