Title:
燃料電池用ガス拡散層及びその製造方法、膜電極接合体、並びに燃料電池
Document Type and Number:
Japanese Patent JP6931802
Kind Code:
B2
Abstract:
Disclosed is a gas-diffusion layer used for fuel cells, including: a porous material that includes as main ingredients conductive particles and a polymer resin, wherein said gas-diffusion layer internally possesses pores with a size from 0.01 µm to 0.05 µm, and hollows with a size from 1 µm to 200 µm. Further disclosed is a process for producing a gas-diffusion layer used for fuel cells, including: (i) kneading conductive particles, a polymer resin, a pore-forming agent, a surfactant, and a dispersion solvent; (ii) rolling the mixture obtained in Step (i) to shape said mixture into a sheet; (iii) baking the sheet-shaped mixture to sublime the pore-forming agent, thereby forming hollows therein, and to remove the surfactant and the dispersion solvent; and (iv) further rolling the baked mixture to adjust a thickness of the baked mixture.
Inventors:
Tsutomu Kawashima
Keiichi Kondo
Masashi Shoji
Koji Ogawa
Keiichi Kondo
Masashi Shoji
Koji Ogawa
Application Number:
JP2017551521A
Publication Date:
September 08, 2021
Filing Date:
October 21, 2016
Export Citation:
Assignee:
Panasonic IP Management Co., Ltd.
International Classes:
H01M4/86; H01M4/88; H01M8/0258; H01M8/1004
Domestic Patent References:
| JP2010251291A | ||||
| JP2008103164A | ||||
| JP20142923A |
Foreign References:
| WO2010050219A1 | ||||
| WO2015098530A1 | ||||
| WO2011027550A1 |
Attorney, Agent or Firm:
Kenji Kamada
Koichi Nomura
Koichi Nomura