ELECTROCHEMICAL ASSEMBLY

Systems and methods for manufacturing a large-sized electrochemical assembly are described herein. In some approaches, the electrochemical assembly comprises a first gas manifold plate, a second gas manifold plate and a plurality of electrochemical cell repeating unit disposed between the first gas manifold plate and the second gas manifold plate. Each electrochemical cell repeating unit includes a large-size metal sheet substrate with isolated smaller size porous metal structures on the large-size metal sheet substrate. An anode layer, an electrolyte layer and a cathode layer are fabricated on the large-size metal substrate using thin film deposition technology. The electrochemical assembly comprises a flow field design including a plurality of risers formed on the electrochemical each large-size metal sheet substrate and interconnect of each electrochemical cell repeating unit to uniformly distribute a first feed stream and a second feed stream to each electrochemical cell repeating unit.