The formulation of nano-scale electrolyte suspensions and its application process for fabrication of solid oxide fuel cell-membrane electrode assembly (SOFC-MEA)

摘要

This invention describes the recipe and preparation process of nano-scale electrolyte suspension and its application via a spin coating process for fabrication of airtight/fully dense electrolyte layers composed in solid oxide fuel cell - membrane electrode assembly with high performance characteristics. The recipe of nano-scale electrolyte suspension includes 10 ∼ 50wt% nano-scale electrolyte powder, 0.01 ∼ 1wt% poly acrylic acid (PAA as dispersant), 0.1 ∼ 5wt% poly vinyl alcohol (PVA as binder), 0.005 ∼ 1wt% octanol as defoamer, and deionized water as solvent. Solid oxide fuel cell fabricated via this recipe and process exhibits that the open-circuit voltage (OCV) is over 1 Volt, and maximum power density is 335mW/cm2 at 800°C.