In3+-doped Sr2Fe1.5Mo0.5O6-δ cathode with improved performance for an intermediate-temperature solid oxide fuel cell

被引：18

作者：

Ma, Yumei ^{[1
]}

Zhang, Lijie ^{[2
]}

Zhu, Kang ^{[2
]}

Zhang, Binze ^{[2
]}

Peng, Ranran ^{[2
]}

Xia, Changrong ^{[2
]}

Huang, Ling ^{[1
]}

机构：

[1] Xinjiang Univ, Coll Chem, State Key Lab Chem & Utilizat Carbon Based Energy, Urumqi 830046, Peoples R China

[2] Univ Sci & Technol China, Dept Mat Sci & Engn, Hefei 230026, Peoples R China

来源：

NANO RESEARCH | 2024年 / 17卷 / 01期

关键词：

solid oxide fuel cell; cathode; In3+ doping; oxygen reduction reaction (ORR); Sr2Fe1.5Mo0.5O6-delta; TOTAL-ENERGY CALCULATIONS; ELECTROCHEMICAL PERFORMANCE; CHEMICAL DIFFUSION; MOLECULAR-DYNAMICS; OXYGEN-EXCHANGE; ELECTRODE; ANODE; ENHANCE;

D O I：

10.1007/s12274-023-6338-y

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：

Promoting the oxygen reduction reaction (ORR) is critical for commercialization of intermediate-temperature solid oxide fuel cells (IT-SOFCs), where Sr2Fe1.5Mo0.5O6-delta (SFM) is a promising cathode by working as a mixed ionic and electronic conductor. In this work, doping of In3+ greatly increases the oxygen vacancy concentration and the content of adsorbed oxygen species in Sr2Fe1.5Mo0.5-xInxO6-delta (SFMInx), and thus effectively promotes the ORR performance. As a typical example, SFMIn0.1 reduces the polarization resistance (R-p) from 0.089 to 0.046 Q<middle dot>cm(2) at 800 degrees C, which is superior to those doped with other metal elements. In addition, SFMIn0.1 increases the peak power density from 0.92 to 1.47 W<middle dot>cm(-2) at 800 degrees C with humidified H-2 as the fuel, indicating that In3+ doping at the Mo site can effectively improve the performance of SOFC cathode material.

引用

页码：407 / 415

页数：9

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