Behavior of strontium- and magnesium-doped gallate electrolyte in direct carbon solid oxide fuel cells

被引：41
|
作者：
Zhang, Li [1 ]
Xiao, Jie [1 ]
Xie, Yongmin [1 ]
Tang, Yubao [3 ]
Liu, Jiang [1 ,2 ]
Liu, Meilin [2 ,4 ]
机构：
[1] S China Univ Technol, Sch Chem & Chem Engn, Key Lab Fuel Cell Technol Guangdong Prov, Guangzhou 510641, Guangdong, Peoples R China
[2] S China Univ Technol, Coll Environm & Energy, New Energy Res Inst, Guangzhou 510006, Guangdong, Peoples R China
[3] Qingdao Univ Sci & Technol, Coll Chem & Mol Engn, Key Lab Sensor Anal Tumor Marker, Minist Educ, Qingdao 266042, Peoples R China
[4] Georgia Inst Technol, Sch Mat Sci & Engn, Atlanta, GA 30332 USA
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2014年 / 608卷
基金：
美国国家科学基金会;
关键词：
Solid oxide fuel cell; Direct carbon; Doped lanthanum gallate; Oxygen ionic conductivity; DIP COATING TECHNIQUE; PERFORMANCE; CONVERSION; SOFC;
D O I：
10.1016/j.jallcom.2014.04.154
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：
Perovskite-type La0.9Sr0.1Ga0.8Mg0.2O3 (delta)(LSGM) is synthesized by conventional solid state reaction. Its phase composition, microstructure, relative density, and oxygen-ionic conductivity are investigated. Tubular electrolyte-supported solid oxide fuel cells (SOFCs) are prepared with the LSGM as electrolyte and gadolinia doped ceria (GDC) mixed with silver as anode. The SOFCs are operated with Fe-loaded activated carbon as fuel and ambient air as oxidant. A typical single cell gives a maximum power density of 383 mWcm(2) at 850 degrees C, which is nearly 1.3 times higher than that of the similar cell with YSZ as electrolyte. A stability test of 72 min is carried out at a constant current density of 210 mA cm(2), with a fuel utilization of 60%, indicating that LaGaO3-based electrolyte is promising to be applied in direct carbon SOFCs (DC-SOFCs). (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：272 / 277
页数：6
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