BaZr0.2Ce0.8-xYxO3-δ solid oxide fuel cell electrolyte synthesized by sol-gel combined with composition-exchange method

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Please use this identifier to cite or link to this item: https://ir.lib.ncu.edu.tw/handle/987654321/104730

Title:	BaZr0.2Ce0.8-xYxO3-δ solid oxide fuel cell electrolyte synthesized by sol-gel combined with composition-exchange method
Authors:	曾重仁;Tseng, Chung-Jen;Chang, Jeng-Kuei;Hung, I-Ming;Lee, Kan-Rong;Lee, Sheng-Wei
Contributors:	工學院能源工程研究所
Keywords:	Alternative fuels. Production and utilization;Applied sciences;BaZr0.2Ce0.8−xYxO3−δ;Chemical stability;Energy;Exact sciences and technology;Fuels;Hydrogen;Ionic conductivity;Proton-conducting electrolyte;Solid oxide fuel cells
Date:	2014-09-03
Issue Date:	2026-04-23 11:56:42 (UTC+8)
Publisher:	Elsevier Ltd.;Kidlington: Elsevier Ltd
Abstract:	摘要： This study reports the synthesis of proton-conducting BaZr0.2Ce0.8−xYxO3−δ (x = 0–0.4) oxides by using a combination of citrate-EDTA complexing sol–gel process and composition-exchange method. Compared to those oxides prepared from conventional sol–gel powders, the sintered BaZr0.2Ce0.8−xYxO3−δ pellets synthesized by sol–gel combined with composition-exchange method are found to exhibit improved sinterability, a higher relative density, higher conduction, and excellent thermodynamic stability against CO2. Moreover, the Pt/electrolyte/Pt single cell using such a BaZr0.2Ce0.6Y0.2O3−δ electrolyte shows an obviously higher maximum powder density in the hydrogen-air fuel cell experiments. Based on the experimental results, we discuss the improvement mechanism in terms of calcined particle characteristics. This work demonstrates that the BaZr0.2Ce0.8−xYxO3−δ oxides synthesized by sol–gel combined with composition-exchange method would be a promising electrolyte for the use in H+-SOFC applications. More importantly, this new fabrication approach could be applied to other similar ABO3-perovskite material systems. •Electrolytes are prepared by sol–gel combined with composition-exchange method.•The sintered oxides exhibit better sinterability and higher conductivities.•The sintered oxides also exhibit excellent resistance to CO2 ambient.•The Pt/electrolyte/Pt single cell shows a higher maximum power density. 出版者： Kidlington: Elsevier Ltd 出版日期： 2014-09-03 出處： International journal of hydrogen energy, 2014, Vol.39 (26), p.14434-14440 資源來源： Elsevier ScienceDirect Journals Complete ** 版權： 2014 Hydrogen Energy Publications, LLC. 版權： 2015 INIST-CNRS 識別號： ISSN: 0360-3199 識別號： EISSN: 1879-3487 識別號： DOI: 10.1016/j.ijhydene.2014.02.024 識別號： CODEN: IJHEDX
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