DRY COMPLIANT SEAL FOR PHOSPHORIC ACID FUEL CELL,申请号SE19900002379-传众专利搜索

DRY COMPLIANT SEAL FOR PHOSPHORIC ACID FUEL CELL

申请公布号：SE9002379(D0)

申请号：SE19900002379

申请日期：1990.07.06

申请公布日期：1990.07.06

申请人：

WESTINGHOUSE ELECTRIC CORPORATION

发明人：S J *GRANATA JR

分类号：C08L27/18;H01M8/02;H01M8/24

主分类号：C08L27/18

摘要：A dry compliant overlapping seal for a phosphoric acid fuel cell preformed of non-compliant Teflon to make an anode seal frame that encircles an anode assembly, a cathode seal frame that encircles a cathode assembly and a compliant seal frame made of expanded Teflon, generally encircling a matrix assembly. Each frame has a thickness selected to accommodate various tolerances of the fuel cell elements and are either bonded to one of the other frames or to a bipolar or end plate. One of the non-compliant frames is wider than the other frames forming an overlap of the matrix over the wider seal frame, which cooperates with electrolyte permeating the matrix to form a wet seal within the fuel cell that prevents process gases from intermixing at the periphery of the fuel cell and a dry seal surrounding the cell to keep electrolyte from the periphery thereof. The frames may be made in one piece, in L-shaped portions or in strips and have an outer perimeter which registers with the outer perimeter of bipolar or end plates to form surfaces upon which flanges of pan shaped, gas manifolds can be sealed.