CO耐受的单位点/纳米颗粒协同型质子交换膜燃料电池阳极催化剂  

Single atom sites as CO scavenger to allow for crude hydrogen usage in PEMFC

作　　者：王显 杨小龙 王颖 梅丙宝 金钊 李阳 施兆平 姜政 刘长鹏 邢巍 葛君杰 Xian Wang;Xiaolong Yang;Ying Wang;Bingbao Mei;Zhao Jin;Yang Li;Zhaoping Shi;Zheng Jiang;Changpeng Liu;Wei Xing;Junjie Ge(State Key Laboratory of Electroanalytic Chemistry,Jilin Province Key Laboratory of Low Carbon Chemistry Power,Institution Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun 130022,China;School of Applied Chemistry and Engineering,University of Science and Technology of China,Hefei 230026,China;State Key Laboratory of Rare Earth Resource Utilization,Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun 130022,China;Shanghai Institute of Applied Physics,Chinese Academy of Sciences,Shanghai 201204,China;Shanghai Synchrotron Radiation Facility,Zhangjiang National Lab,Shanghai Advanced Research Institute,Chinese Academy of Sciences,Shanghai 201204,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]State Key Laboratory of Electroanalytic Chemistry,Jilin Province Key Laboratory of Low Carbon Chemistry Power,Institution Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun 130022,China [2]School of Applied Chemistry and Engineering,University of Science and Technology of China,Hefei 230026,China [3]State Key Laboratory of Rare Earth Resource Utilization,Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun 130022,China [4]Shanghai Institute of Applied Physics,Chinese Academy of Sciences,Shanghai 201204,China [5]Shanghai Synchrotron Radiation Facility,Zhangjiang National Lab,Shanghai Advanced Research Institute,Chinese Academy of Sciences,Shanghai 201204,China [6]University of Chinese Academy of Sciences,Beijing 100049,China

出　　处：《Science Bulletin》2024年第8期1061-1070,共10页科学通报（英文版）

基　　金：supported by the National Key Research and Development Program of China(2022YFB4004100);the National Natural Science Foundation of China(U22A20396 and 22209168);the Natural Science Foundation of Anhui Province(2208085UD04);China Postdoctoral Science Foundation(2023M743375)。

摘　　要：Nanosized Pt catalysts are the catalyst-of-choice for proton exchange membrane fuel cell(PEMFC)anode,but are limited by their extreme sensitivity to CO in parts per million(ppm)level,thereby making the use of ultrapure H_(2)a prerequisite to ensure acceptable performance.Herein,we confront the CO poisoning issue by bringing the Ir/Rh single atom sites to synergistically working with their metallic counterparts.In presence of 1000 ppm CO,the catalyst represents not only undisturbed H_(2)oxidation reaction(HOR)catalytic behavior in electrochemical cell,but also unparalleled peak power density at 643 mW cm^(-2)in single cell,27-fold in mass activity of the best PtRu/C catalysts available.Pre-poisoning experiments and surface-enhanced Raman scattering spectroscopy(SERS)and calculation results in combine suggest the presence of adjacent Ir/Rh single atom sites(SASs)to the nanoparticles(NPs)as the origin for this prominent catalytic behavior.The single sites not only exhibit superb CO oxidation performance by themselves,but can also scavenge the CO adsorbed on approximated NPs via supplying reactive OH*species.We open up a new route here to conquer the formidable CO poisoning issue through single atom and nanoparticle synergistic catalysis,and pave the way towards a more robust PEMFC future.

关 键 词：CO-tolerant anode catalyst Fuel cells Dual metal catalysts Bifunctional catalyst 

分 类 号：TM911.4[电气工程—电力电子与电力传动] TQ426[化学工程]