Surface oxidation of Ni-cermet electrodes by CO_(2) and H_(2)O and how to moderate it  

作　　者：Dingkai Chen Mathias Barreau Thierry Dintzer Sylwia Turczyniak-Surdacka Fabrice Bournel Jean-Jacques Gallet Spyridon Zafeiratos 

机构地区：[1]Institut de Chimie et Procédés pour l’Energie,l’Environnement et la Santé,UMR 7515 CNRS-UdS,25 Rue Becquerel,67087 Strasbourg,France [2]Faculty of Chemistry,Biological and Chemical Research Centre,University of Warsaw,Żwirki i Wigury 101,02-089 Warsaw,Poland [3]Faculty of Chemistry,University of Warsaw,Pasteura 1,02-093,Poland [4]Laboratoire de Chimie Physique-Matière et Rayonnement,Sorbonne Université,Campus Curie,CNRS UMR 7614,4 place Jussieu,75005 Paris,France [5]Synchrotron SOLEIL,L’orme des Merisiers,B.P.48,Saint Aubin,Gif-sur-Yvette Cedex 91192,France

出　　处：《Journal of Energy Chemistry》2022年第4期300-308,共9页能源化学（英文版）

基　　金：financial support from Strasbourg University via the Id EX-2018(Postdoctorants)project;financial support by the project CALIPSOplus under the proposal number 20200271 from the EU Framework Program HORIZON 2020。

摘　　要：The oxidation of porous Ni-yttria-stabilized zirconia(YSZ)and Ni-gadolinia-doped ceria(GDC)ceramicmetal(cermet)electrodes in H_(2)O and CO_(2)atmospheres was studied by near-ambient pressure X-ray photoelectron spectroscopy(NAP-XPS).We show that the oxidation of nickel by the two gases is not similar,as is commonly believed,but it depends on the ceramic type.Nickel is vulnerable to oxidation in H_(2)O but it resists to CO_(2)in Ni-GDC,as compared to the Ni-YSZ electrode.Inspired by this observation we conceptualize and fabricate Ni-YSZ electrodes modified by ceria nanoparticles,which show significantly higher resistance to CO_(2)oxidation as compared with conventional Ni-YSZ electrodes.The preparation of tailormade cermet electrodes with identical bulk/mechanical characteristics but very different surface properties offers a promising fabrication strategy for high-performance and durability solid oxide electrolysis cells for CO_(2)conversion.

关 键 词：NAP-XPS CO_(2)electrolysis Nickel oxidation Solid oxide cells Ceria nanoparticles 

分 类 号：TG148[一般工业技术—材料科学与工程] O646.54[金属学及工艺—金属材料]