Surface oxidation of Ni-cermet electrodes by CO2 and H2O and how to moderate it

被引：2

作者：

Dingkai Chen ^{[1
]}

Mathias Barreau ^{[1
]}

Thierry Dintzer ^{[1
]}

Sylwia Turczyniak-Surdacka ^{[2
,3
]}

Fabrice Bournel ^{[4
,5
]}

Jean-Jacques Gallet ^{[4
,5
]}

Spyridon Zafeiratos ^{[1
]}

机构：

[1] Institut de Chimie et Procédés pour l'Energie, l'Environnement et la Sante

[2] Faculty of Chemistry, Biological and Chemical Research Centre, University of Warsaw

[3] Faculty of Chemistry, University of Warsaw

[4] Laboratoire de Chimie Physique-Matière et Rayonnement, Sorbonne Universite

[5] Synchrotron SOLEIL, L'orme des Merisiers

来源：

Journal of Energy Chemistry | 2022年 / 04期

基金：

欧盟地平线“2020”;

关键词：

D O I：

暂无

中图分类号：

TG148 [金属陶瓷材料]; O646.54 [电极过程];

学科分类号：

080502 ; 081704 ;

摘要：

The oxidation of porous Ni-yttria-stabilized zirconia (YSZ) and Ni-gadolinia-doped ceria (GDC) ceramicmetal (cermet) electrodes in H2O and CO2atmospheres 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 H2O but it resists to CO2in 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 CO2oxidation 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 CO2conversion.

引用

页码：300 / 308

页数：9

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