文献类型：期刊文献

英文题名：Oxidizing- and sintering- resistant PdZn@ZnO catalyst concerning methanol steam reforming for on-board hydrogen production for fuel cell vehicles

作者：Yan, Peijian;Yan, Jiahao;Yu, Xinhai[1];Tian, Pengfei[1];Zhou, Shenghu;Tu, Shan -Tung

机构：[1]East China Univ Sci & Technol, Sch Mech & Power Engn, Key Lab Pressure Syst & Safety MOE, 130 Meilong Rd, Shanghai 200237, Peoples R China; East China Univ Sci & Technol, Sch Chem Engn, Shanghai Key Lab Multiphase Mat Chem Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2023

卷号：48

期号：100

起止页码：40017

外文期刊名：INTERNATIONAL JOURNAL OF HYDROGEN ENERGY

收录：;EI(收录号：20234014830904);WOS:【SCI-EXPANDED(收录号:WOS:001114432900001)】；

基金：This work is financially supported by the National Key Research and Development Program of China [2018YFA0704604] .

语种：英文

外文关键词：Fuel cell vehicles; Methanol steam reforming; Hydrogen; Oxidation; PdZn@ZnO

摘要：For proton exchange membrane fuel cells (PEMFCs) powered vehicles using on-board H2 production by methanol steam reforming (SRM), how to enhance the anti-oxidation and anti-sintering abilities of SRM catalysts are two challenges. Herein, to address the two challenges, a PdZn@ZnO catalyst has been synthesized by in-situ transformation of Pd@ZnO core-shell structure under thermal treatment and H2 reduction, which is a facile and green method. The PdZn@ZnO catalyst exhibited an excellent anti-oxidation ability without obvious change in catalytic activity before and after oxidation treatment. Density functional theory calculations revealed that the abundant PdZn/ZnO interface sites of PdZn@ZnO catalyst could suppress O2 dissociation and subsequent oxidation of the PdZn catalyst. In addition, ZnO shell of PdZn@ZnO prevented the encapsulated PdZn alloys from sintering, resulting in its superior stability to those of the reported catalysts. The PdZn@ZnO catalyst showed great potential for the on-board production of hydrogen for PEMFC-powered vehicles.(c) 2023 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.