公开(公告)号：US20230155152A1

公开(公告)日：2023-05-18

申请号：US17985942

申请日：2022-11-14

申请人： AVL List GmbH ,  AVL Fuel Cell Canada Inc.

发明人： Owen THOMAS ,  Max CIMENTI ,  Laura RAIBECK

IPC分类号： H01M8/1004 ,  H01M4/88

CPC分类号： H01M8/1004 ,  H01M4/8807

摘要： The present invention relates to an electrochemical fuel cell device having stacked cells and a membrane-electrode assembly (20). The membrane-electrode assembly (20) comprises, amongst others, a first gas diffusion layer (21) arranged on one side of a membrane (23) and a second gas diffusion layer (22) arranged on the opposite side of the membrane (23) for distributing fluids across each side of the membrane (23). The first gas diffusion layer (21) is formed to extend across and beyond planar dimensions of the membrane (23) (an active area of the stack) into at least one transition region adjacently arranged to the planar dimensions of the membrane (23) for covering an interfacing surface in the fuel cell stack within the transition region, and the second gas diffusion layer (22) is formed to extend across the planar dimensions of the membrane (23) without extending beyond, or is formed to extend across and beyond the planar dimensions of the membrane (23) into another one of the at least one region adjacently arranged to the planar dimensions of the membrane (23) which is a transition region of the fuel cell stack for accommodating fluid flow to and from the fuel cell for covering an interfacing surface of the fuel cell stack.

公开(公告)号：US20230048138A1

公开(公告)日：2023-02-16

申请号：US17792716

申请日：2021-01-29

申请人： AVL List GmbH ,  AVL Fuel Cell Canada Inc.

发明人： Owen THOMAS ,  Max CIMENTI ,  Emerson GALLAGHER

IPC分类号： H01M8/0284 ,  H01M8/1004 ,  H01M8/0273 ,  H01M8/0286 ,  H01M8/1018 ,  H01M8/2465

摘要： Simple membrane electrode and frame assemblies for a solid polymer electrolyte fuel cell stack and improved methods for making them are disclosed which involve the use of a single adhesive layer. Using an appropriate design, the single adhesive layer can provide multiple bonds, including a bond between one of the gas diffusion layers and a catalyst coated membrane assembly, between the catalyst coated portion of the catalyst coated membrane assembly and the frame, and between either the other of the gas diffusion layers and the frame, or between an uncoated portion of the catalyst coated membrane assembly and the frame.