Novel core-shell SDC/amorphous Na2CO3 nanocomposite electrolyte for low-temperature SOFCs

被引：212

作者：

Wang, Xiaodi ^{[1
,2
,3
]}

Ma, Ying ^{[1
,3
]}

Raza, Rizwan ^{[1
]}

Muhammed, Mamoun ^{[3
]}

Zhu, Bin ^{[1
]}

机构：

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

[2] Harbin Engn Univ, Coll Mat Sci & Chem Engn, Harbin 150001, Peoples R China

[3] Royal Inst Technol KTH, Div Funct Mat, S-16440 Stockholm, Sweden

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2008年 / 10卷 / 10期

基金：

瑞典研究理事会;

关键词：

Ce0.8Sm0.2O1.9 (SDC); Core-shell structure; Amorphous; Composite electrolyte; Solid oxide fuel cells (SOFCs);

D O I：

10.1016/j.elecom.2008.08.023

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 [应用化学];

摘要：

Novel core-shell SDC (Ce0.8SM0.2O1.9)/amorphous Na2CO3 nanocomposite was prepared for the first time. The core-shell nanocomposite particles are smaller than 100 nm with amorphous Na2CO3 shell of 46 nm in thickness. The nanocomposite electrolyte shows superionic conductivity above 300 degrees C, where the conductivity reaches over 0.1 S cm(-1). Such high conductive nanocomposite has been applied in low-temperature solid oxide fuel cells (LTSOFCs) with an excellent performance of 0.8 W cm(-2) at 550 degrees C. A new potential approach of designing and developing superionic conductors for LTSOFCs was presented to develop interface as 'superionic highway' in two-phase materials based on coated SDC. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：1617 / 1620

页数：4

共 11 条

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Ceramic technology - Oxide-ion conductors by design [J].