Wood Herron & Evans LLP
Method of making a fuel cell device
An active cell is prepared by dispensing first electrode sub-layers, pressing in physical structures to partially embed them in an uppermost sub-layer, and dispensing more first electrode sub-layers wherein dispensing is in order of increasing porosity, then drying the sub-layers to form a first electrode layer. An electrolyte layer is then formed thereon. Further preparation includes dispensing second electrode sub-layers over the electrolyte layer, pressing in physical structures to partially embed them in an uppermost sub-layer, and dispensing more second electrode sub-layers wherein dispensing is in order of decreasing porosity, then drying the sub-layers to form a second electrode layer. A laminated stack is formed, then the physical structures are pulled out. Sintering then forms the active cell with active passages embedded in and supported by the sintered electrode layers, and with decreasing porosity in the electrode layers in a thickness direction away from the electrolyte layer.
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Lambert Alan
Devoe Devoe