期刊
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
卷 38, 期 18, 页码 7430-7437出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2013.04.051
关键词
Electronic blocking layer; Anode materials; Chemical stability; Solid oxide fuel cells
资金
- Natural Science Foundation of China [51072193]
- National Basic Research Program of China (973 Program) [2012CB922001]
- Fundamental Research Funds for the Central Universities
A composite of NiO-BaZr0.1Ce0.7Y0.2O3-delta (NiO-BZCY) was successfully prepared by a simple one-step-combustion process and applied as an anode for solid oxide fuel cells based on stable La2Ce2O7 (LCO) electrolyte. A high open circuit voltage of 1.00 V and a maximum power density of 315 mW cm(-2) were obtained with NiO-BZCY anode and LCO electrolyte when measured at 700 degrees C using humidified hydrogen fuel. SEM-EDX and Raman results suggested that a thin BaCeO3-based reaction layer about 5 mu m in thickness was formed at the anode/electrolyte interface for Ba cations partially migrated from anode into the electrolyte film. Impedance spectra analysis showed that the activation energy for LCO conductivity differed with the anode materials, about 52.51 kJ mol(-1) with NiO-BZCY anode and 95.08 kJ mol(-1) with NiO-LCO anode. The great difference in these activation energies might suggest that the formed BaCeO3 reaction layer could promote the proton transferring numbers of LCO electrolyte. Copyright (C) 2013, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据