Abstract:
An innovation scheme and technology used for controlling porosity/gas permeability of electrode layers of SOFC-MEA through combination of pore former and sintering manipulations. The porosity of electrode layer is 0-35 vol. %, and the gas permeability of electrode layer is 1×10−3−1×10−6 L/cm2/sec.
Abstract translation:用于通过成孔剂和烧结操作的组合来控制SOFC-MEA电极层的孔隙率/气体渗透性的创新方案和技术。 电极层的孔隙度为0-35vol。 %,电极层的透气度为1×10 -3 -1×10 -6 L / cm 2 /秒。
Abstract:
The innovation process describes the process and results for fabrication of a magnetron sputter deposited fully dense electrolyte layer (8YSZ/GDC/LSGM) embedded in a high performance membrane electrolyte assembly (MEA) (Unit Cell) of Solid Oxide Fuel Cell. A single cell with airtight electrolyte layer (8YSZ/GDC/LSGM) is prepared via thin film technique of magnetron sputter deposition, combined with SOFC-MEA processing methods (such as tape casting, lamination, vacuum hot pressing, screen printing, spin coating, and plasma spray coating) and sintering optimization conditions. The gas permeability of the electrolyte layer is below 1×10−6 L/cm2/sec and the open circuit voltage/power density of the single cell performance test exceeds 1.0 V and 500 mW/cm2.
Abstract translation:创新过程描述了嵌入在固体氧化物燃料电池的高性能膜电解质组件(MEA)(Unit Cell)中的磁控溅射沉积的完全致密的电解质层(8YSZ / GDC / LSGM)的工艺和结果。 通过磁控溅射沉积的薄膜技术制备了具有气密电解质层(8YSZ / GDC / LSGM)的单电池,结合SOFC-MEA加工方法(如带铸,层压,真空热压,丝网印刷,旋涂, 和等离子体喷涂)和烧结优化条件。 电解质层的气体渗透性低于1×10 -6 L / cm 2 / sec,单电池性能试验的开路电压/功率密度超过1.0V,500mW / cm 2。
Abstract:
A recipe and two sequential processes for fabrication of electrode substrates of solid oxide fuel cells (SOFCs) are described in this invention. The typical recipe consists of 50˜86 wt % electrolyte (8YSZ) or 50˜80 wt % anode electrode (NiO/8YSZ), 12˜22 wt % MEK (solvent 1), 5˜9 wt % EtOH (solvent 2), 1˜2 wt % TEA (dispersant), 0.5˜2 wt % DBP (plasticizer 1), 0.5˜2 wt % PEG (plasticizer 2), 3˜6 wt % PVB (binder), and 0.1˜10 wt % graphite (pore former). Two sequential processes include: 1. The process for preparation of the green tape slurry from materials of the recipe, 2. The synergistic process for fabrication of a high integrity membrane electrode assembly (MEA) of SOFC from the prepared electrode substrates.