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.