標題: Fabrication of anode-supported thin BCZY electrolyte protonic fuel cells using NiO sintering aid
作者: Lee, Kan-Rong
Tseng, Chung-Jen
Jang, Shian-Ching
Lin, Jing-Chie
Wang, Kuan-Wen
Chang, Jeng-Kuei
Chen, Ting-Chia
Lee, Sheng-Wei
材料科學與工程學系
Department of Materials Science and Engineering
關鍵字: Solid oxide fuel cells;Proton-conducting electrolyte;Sintering aid;Spin coating;Electrochemical impedance spectroscopy
公開日期: 3-九月-2019
摘要: A thin and fully dense BaCe0.6Zr0.2Y0.2O3-delta(BCZY) electrolyte for the use of anode-supported protonic fuel cells has been successfully prepared by spin coating using NiO sintering aid. The effects of NiO addition on the electrolyte microstructures and fuel cell performances are also investigated. An appropriate NiO addition has a significant positive contribution to the densification and grain growth of thin BCZY electrolytes. However, too much NiO addition gives rise to NiO aggregation in BCZY electrolyte and deteriorates the cell performance. The enhanced sintering mechanism can be mainly attributed to the oxygen vacancies generated from the NiO decomposition and bulk diffusion of Ni into BCZY perovskites. The fuel cell with a BCZY-3%NiO electrolyte exhibits the highest maximum power density of similar to 106.6 mW/cm(2) at 800 degrees C among all fuel cells in this study. The electrochemical impedance characteristics of thin BCZY electrolyte fuel cells are further discussed under open circuit conditions. (C) 2019 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
URI: http://dx.doi.org/10.1016/j.ijhydene.2019.07.097
http://hdl.handle.net/11536/152783
ISSN: 0360-3199
DOI: 10.1016/j.ijhydene.2019.07.097
期刊: INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
Volume: 44
Issue: 42
起始頁: 23784
結束頁: 23792
顯示於類別:期刊論文