Modified room temperature solid-state synthesis of yttria-stabilized zirconia(YSZ) nano-powders for solid oxide fuel cells

作     者：Xiaoqian Xu Yurun Feng Zhaoyu Zhong Xue Guo Zhenhao Zhang Jiao Li Shikai Zhao Shigang Wu Haibin Sun Xiaoqian Xu;Yurun Feng;Zhaoyu Zhong;Xue Guo;Zhenhao Zhang;Jiao Li;Shikai Zhao;Shigang Wu;Haibin Sun

作者机构：School of Materials Science and EngineeringShandong University of TechnologyZibo 255000China Shandong Yasai Ceramic Technology Co.Ltd.Jinan 271100China Shandong Industrial Ceramics Research&Design Institute Co.Ltd.Zibo 255000China 

出 版 物：《稀土学报:英文版》 (Journal of Rare Earths)

年 卷 期：2023年第41卷第9期

页      面：1385-1391,I0004页

核心收录：

学科分类：0808[工学-电气工程] 08[工学] 0703[理学-化学] 

基　　金：supported by the Natural Science Foundation of Shandong Province (ZR2020KE033,ZR2020ME051,ZR2019BEM013,ZR2021ME253) the Shandong Science and Technology Program (2021TSGC1122) the Shandong Postdoctoral Innovation Foundation (201903069) the Zibo Key Research and Development Project (2021SNPT0004,2021SNCG0076)。 

主　　题：Room temperature solid-state reaction YSZ electrolyte High sintering activity High ionic conductivity Rare earths 

摘      要：High-performance solid oxide fuel cell(SOFC) is in urgent need of high-quality electrolyte powders with high reactivity and chemical uniformity.Here,8 mol% Y_(2)O_(3) doped ZrO_(2)(YSZ) nano-powders were synthesized by an improved solid-state reaction method at ambient temperature,and were applied to the fabrication of SOFC electrolytes.YSZ nano-powders show average grain sizes of ^(2)0 nm and high dispersibility,which is comparable with or even better than some other chemical methods.Benefitting from their high reactivity,dense YSZ electrolytes(relative density of 97.9%) can be obtained at a relatively low sintering temperature of 1400℃.The optimized electrical conductivity reaches up to a high value of0.034 S/cm at 800 0C in air.The anode supported single cell with the construction of Ni-YSZ/YSZ/Sm_(0.2)Ce_(0.8)O_(2-δ)(SDC)/La_(0.6)Sr_(0.4)Co_(0.2)Fe_(0.8)O_(3-δ)(LSCF) exhibits the peak power density of 0.827 W/cm^(2) at800℃ while taking wet H_(2) as fuels and ambient air as oxidants.