Rafique Muhammad, Safdar Neelam, Irshad Muneeb, Usman Muhammad, Akhtar Maaz, Saleem Muhammad Wajid, Abbas Muhammad Mujtaba, Ashour Ahmed, Soudagar Manzoore Elahi
Department of Physics, University of Sahiwal, Sahiwal 57000, Pakistan.
Department of Physics, University of Gujrat, Gujrat 50700, Pakistan.
Materials (Basel). 2022 May 17;15(10):3585. doi: 10.3390/ma15103585.
BaCe0.2Zr0.6Y0.2O3−δ (BCZY) perovskite electrolytes were synthesized for intermediate-temperature solid oxide fuel cell with a cost-effective and versatile co-precipitation method. The synthesized BCZY electrolytes were sintered at 900, 1000, and 1100 °C to observe the effects of low sintering temperature on the structural, morphological, thermal, and electrical properties of BCZY. All BCZY electrolytes materials exhibited a crystalline perovskite structure and were found to be thermally stable. The crystallinity and conductivity of BCZY electrolyte enhanced with increased sintering temperature, due to the grain growth. At the same time, secondary phases of carbonates were also observed for samples sintered at a temperature lower than 1100 °C. The BCZY sintered at 1100 °C exhibited a density >95%, and a power density of 350 mWcm−2 with open-circuit voltage 1.02 V at 650 °C was observed due its dense and airtight structure. Based on the current investigation, we suggest that the BaCe0.2Zr0.6Y0.2O3−δ perovskite electrolyte sintered at a temperature of 1100 °C is a suitable electrolyte for IT-SOFC.
采用经济高效且通用的共沉淀法合成了用于中温固体氧化物燃料电池的BaCe0.2Zr0.6Y0.2O3−δ（BCZY）钙钛矿电解质。将合成的BCZY电解质在900、1000和1100℃下烧结，以观察低烧结温度对BCZY结构、形态、热性能和电性能的影响。所有BCZY电解质材料均呈现出结晶钙钛矿结构，且具有热稳定性。由于晶粒生长，BCZY电解质的结晶度和电导率随烧结温度升高而增强。同时，对于在低于1100℃温度下烧结的样品，还观察到了碳酸盐的第二相。在1100℃烧结的BCZY密度>95%，在650℃时开路电压为1.02V，功率密度为350mWcm−2，这归因于其致密且气密的结构。基于当前的研究，我们认为在1100℃温度下烧结的BaCe0.2Zr0.6Y0.2O3−δ钙钛矿电解质是适用于中温固体氧化物燃料电池的电解质。
