Mixed ion and electron conductive composites for single component fuel cells: I. Effects of composition and pellet thickness

被引：76

作者：

Fan, Liangdong ^{[1
,2
]}

Wang, Chengyang ^{[2
]}

Osamudiamen, Ose ^{[1
]}

Raza, Rizwan ^{[1
,3
]}

Singh, Manish ^{[1
]}

Zhu, Bin ^{[1
]}

机构：

[1] Royal Inst Technol KTH, Dept Energy Technol, S-10044 Stockholm, Sweden

[2] Tianjin Univ, Sch Chem Engn & Technol, Minist Educ, Key Lab Green Chem Technol, Tianjin 300072, Peoples R China

[3] Comsats Inst Informat Technol, Dept Phys, Lahore 54000, Pakistan

来源：

JOURNAL OF POWER SOURCES | 2012年 / 217卷

基金：

瑞典研究理事会;

关键词：

Single component fuel cells; Composite electrolyte; p and n-type semiconductors; Composition; Thickness; Electrolyte free; CARBONATE COMPOSITE; ELECTROCHEMICAL PROPERTIES; GRAIN-BOUNDARIES; DOPED CERIA; PERFORMANCE; LAYER; EXCHANGE; CATHODE;

D O I：

10.1016/j.jpowsour.2012.05.045

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：

Electrochemical performances of single component fuel cells (SCFCs) based on mixed ion and electron conductors have been studied as a function of composition and pellet thickness by polarization curves and electrochemical impedance spectroscopy. The electronic conductor of LNCZO shows conductivities of 21.7 and 5.3 S cm(-1) in H-2 and in air, respectively. SCFC using 40 wt. % of LNCZO and 60 wt. % of ion conductive SDC-Na2CO3 with a thickness of 1.10 mm shows the highest power density of 0.35 W cm(-2) at 550 degrees C. The performance is correlated to the mixed conduction properties (ionic and electronic, p and n-type) and the microstructure of the functional SCFC layer. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：164 / 169

页数：6

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