Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5145938 | International Journal of Hydrogen Energy | 2017 | 6 Pages |
Abstract
This study reports the synthesis of proton-conducting Ba0.8Sr0.2Ce0.6Zr0.2Y0.2O3âδ oxides by using a combination of the sol-gel process and hetero-composition-exchange technique. The experimental results show that the sintered Ba0.8Sr0.2Ce0.6Zr0.2Y0.2O3âδ pellet synthesized by the hetero-composition-exchange method exhibits excellent sinterability, good relatively density, and high protonic conduction. Furthermore, the Pt/electrolyte/Pt single cell with such an electrolyte shows a significantly higher maximum power density as compared to those oxides prepared from conventional sol-gel powders. Based on the experimental results, we attempt to explain the improvement mechanism in terms of as-calcined particle characteristics and proton hopping distance. This work shows that the Ba1âxSrxCe0.8âyZryY0.2O3âδ oxides synthesized by the sol-gel combined with hetero-composition-exchange method would be a promising electrolyte for H+-SOFC applications. More importantly, this new fabrication approach could be applied to other similar perovskite-type electrolyte systems.
Related Topics
Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
Kan-Rong Lee, Chung-Jen Tseng, Jeng-Kuei Chang, Kuan-Wen Wang, Yu-Shuo Huang, Tzu-Chi Chou, Kuo-Chuang Chiu, Li-Duan Tsai, Sheng-Wei Lee,