Co-improving the electrocatalytic performance and H2S tolerance of a Sr2Fe1.5Mo0.5O6-δ based anode for solid oxide fuel cells

被引：17

作者：

Xu, Chunming ^{[1
]}

Zhang, Lihong ^{[1
]}

Sun, Wang ^{[1
]}

Ren, Rongzheng ^{[1
]}

Yang, Xiaoxia ^{[1
]}

Ma, Minjian ^{[1
]}

Qiao, Jinshuo ^{[1
]}

Wang, Zhenhua ^{[1
]}

Zhen, Shuying ^{[2
]}

Sun, Kening ^{[1
]}

机构：

[1] Beijing Inst Technol, Sch Chem & Chem Engn, Beijing Key Lab Chem Power Source & Green Cataly, Beijing 100081, Peoples R China

[2] Univ Sci & Technol Beijing, State Key Lab Adv Met & Mat, Beijing 100083, Peoples R China

来源：

JOURNAL OF MATERIALS CHEMISTRY A | 2022年 / 10卷 / 30期

基金：

中国国家自然科学基金; 中国博士后科学基金; 国家重点研发计划;

关键词：

ELECTROCHEMICAL PERFORMANCE; DOUBLE PEROVSKITE; STABLE ANODE; SULFUR; ELECTRODE; REDUCTION; CATHODE; FERRITE; CARBON; NANOPARTICLES;

D O I：

10.1039/d2ta03136a

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Co-improving the structural stability and electrocatalytic activity of anode materials is a major challenge for the development of solid oxide fuel cells (SOFCs). Herein, a novel anode material Sr2Fe1.5Mo0.4Ti0.1O6-delta (SFMT) is designed and prepared by using Ti to replace Mo of Sr2Fe1.5Mo0.5O6-delta (SFM). Ti doping effectively enhances the ability of SFM to resist H2S corrosion and SFMT maintains the desired perovskite structure after being exposed to H2S (1000 ppm). Moreover, the partial replacement of Mo5+/Mo6+ by Ti4+ ions can also improve the concentration of oxygen vacancies and enhance the oxygen ion surface exchange and bulk diffusion capabilities. The SFMT-based SOFC delivers an excellent power output in H-2 containing 500 ppm H2S and stably operates for a long time (>50 h), resulting in a maximum power density of 0.71 W cm(-2) at 800 degrees C. The current study presents a promising material design strategy for developing high-performance SOFC anodes.

引用

页码：16280 / 16289

页数：10

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