An electrochemical cell structure comprises an anode, a cathode spaced apart from the anode and an electrolyte in ionic communication with each of the cathode and the anode. A single-piece nonconductive frame supports each of the anode, the cathode and the electrolyte and defines a flowpath for working fluids and for byproducts or ionic exchange.
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH & DEVELOPMENT
 This invention was conceived or first reduced to practice under a project funded by the Department of Energy under contract DE-FC36-04GO14223. The United States Government has certain rights related to this invention.