公开(公告)号：US11545674B2

公开(公告)日：2023-01-03

申请号：US16465115

申请日：2018-10-30

Applicant: TOPPAN PRINTING CO., LTD.

Inventor： Katsuyuki Kishi

IPC: H01M4/92 ,  B01J23/42 ,  H01M4/88 ,  H01M8/1004 ,  H01M4/86 ,  H01M8/10

Abstract: Provided are an electrode catalyst layer for a polymer electrolyte fuel cell, which is capable of improving drainage property and gas diffusion properties and capable of high output, and a polymer electrolyte fuel cell provided with the same. An electrode catalyst layer (2, 3) bonded to a polymer electrolyte membrane (1) includes a catalyst (13), carbon particles (14), a polymer electrolyte (15) and fibrous material (16), in which the electrode catalyst layer (2,3) has a density falling within a range of 500 mg/cm3 to 900 mg/cm3, or has a density falling within a range of 400 mg/cm3 to 1000 mg/cm3, and the mass of the polymer electrolyte (15) falls within a range of 10 mass % to 200 mass % with respect to the total mass of the carbon particles (14) and the fibrous material (16).

公开(公告)号：US11677081B2

公开(公告)日：2023-06-13

申请号：US17030663

申请日：2020-09-24

Applicant: TOPPAN PRINTING CO., LTD.

Inventor： Madoka Ozawa ,  Hiroyuki Michi ,  Yuki Igarashi ,  Katsuyuki Kishi

IPC: H01M4/92 ,  H01M4/86 ,  H01M8/1004 ,  H01M8/10

CPC classification number: H01M4/926 ,  H01M4/8657 ,  H01M8/1004 ,  H01M2008/1095

Abstract: A membrane electrode assembly includes a polyelectrolyte membrane having a first surface and a second surface facing away from the first surface; a fuel-electrode-side electrocatalyst layer bonded to the first surface and containing a first catalytic material, a first electrically conductive carrier, and a first polyelectrolyte, the first electrically conductive carrier carrying the first catalytic material; and an oxygen-electrode-side electrocatalyst layer bonded to the second surface and containing a second catalytic material, a second electrically conductive carrier, a second polyelectrolyte, and a fibrous material, the second electrically conductive carrier carrying the second catalytic material. The membrane electrode assembly contains voids, the voids including pores each having a size in a range of 3 nm or more and 5.5 μm or less.

公开(公告)号：US11563226B2

公开(公告)日：2023-01-24

申请号：US16944508

申请日：2020-07-31

Applicant: TOPPAN PRINTING CO.,LTD.

Inventor： Katsuyuki Kishi

IPC: H01M8/1004 ,  H01M4/86 ,  H01M8/1018 ,  H01M8/10

Abstract: A membrane-electrode assembly including a polymer electrolyte membrane, and electrocatalyst layers disposed on both surfaces of the polymer electrolyte membrane, with a total light transmittance measured after delamination of both the electrocatalyst layers by using an adhesive member is 40% or less. The total light transmittance is at an electrocatalyst layer located part, when a total light transmittance at an electrocatalyst layer non-located part is taken to be 100%. The viscous member has an adhesive force of 3 N/10 mm or more when measured by pulling the viscous member adhered to a stainless steel in a 180°angle direction relative to the stainless steel, for delamination from the stainless steel.