A symmetrical solid oxide fuel cell material and method of making the same

Abstract

This invention relates to a symmetrical solid oxide fuel cell material and its preparation method. The fuel cell material has a double perovskite structure and the molecular formula Sr₂Ti. 0.8 Ni 0.2 FeO 6‑δ This invention synthesizes single-phase Sr₂Ti using a solid-state method. 0.8 Ni 0.2 FeO 6‑δ This material exhibits a pure-phase double perovskite structure in air, and can in-situ desorb Ni-Fe alloy nanoparticles in a reducing atmosphere. The electrode material of this invention possesses excellent oxygen desorption and hydrogen reduction properties. The Sr₂Ti of this invention... 0.8 Ni 0.2 FeO 6‑δ Materials and Electrolytes La 0.9 Sr 0.1 Ga 0.8 Mg 0.2 O 3‑δ It has good chemical compatibility. Based on La 0.9 Sr 0.1 Ga 0.8 Mg 0.2 O 3‑δ Electrolyte, Sr2Ti 0.8 Ni 0.2 FeO 6‑δ The symmetrical cell with electrodes exhibited good polarization impedance results in both air and hydrogen atmospheres. 0.9 Sr 0.1 Ga 0.8 Mg 0.2 O 3‑δ The electrolyte-supported single cell achieved a maximum output power density of 800 mW / cm² when using hydrogen as fuel. ‑2 When propane is used as fuel, the maximum power density reaches 705 mW / cm³. ‑2 It exhibited good output performance. Research shows that Sr2Ti... 0.8 Ni 0.2 FeO 6‑δ The sample is a promising symmetric solid oxide fuel cell electrode material.

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