Thin film fuel cells with vanadium oxide anodes: Strain and stoichiometry effects

被引：5
|
作者：
Van Overmeere, Quentin [1 ]
Ramanathan, Shriram [1 ]
机构：
[1] Harvard Univ, Sch Engn & Appl Sci, Cambridge, MA 02138 USA
来源：
ELECTROCHIMICA ACTA | 2014年 / 150卷
关键词：
Vanadium oxide; thin films; solid oxide fuel cells; phase transformation; anodes; THERMAL-EXPANSION; IN-SITU; XPS; PERFORMANCE; TRANSITION; ELECTRODES; TITANIUM; STATES; PHASE; METAL;
D O I：
10.1016/j.electacta.2014.10.152
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
Thin film solid oxide fuel cells incorporating vanadium oxide anodes having open circuit potential of 1 V with hydrogen fuel have been realized. The as-deposited anode stoichiometry was varied by choice of growth conditions of vanadium oxide and a striking correlation to fuel cell performance (open circuit potential and peak power density) is observed. Possible mechanisms leading to the experimental observations based on calculated thermodynamic phase stability under fuel cell operating environments, spectroscopic analysis of the anodes and strain-related arguments are presented. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码：83 / 88
页数：6
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