公开(公告)号：US11276871B2

公开(公告)日：2022-03-15

申请号：US16320354

申请日：2017-05-31

申请人： TOKYO INSTITUTE OF TECHNOLOGY ,  TEIJIN LIMITED ,  KANAGAWA INSTITUTE OF INDUSTRIAL SCIENCE AND TECHNOLOGY

发明人： Takeo Yamaguchi ,  Yuhei Oshiba ,  Hidenori Ohashi ,  Jin Tomatsu ,  Koji Furuya ,  Takao Ohno ,  Mami Nanbu

IPC分类号： H01M8/106 ,  H01M8/1062 ,  C25B13/08 ,  H01M8/1025 ,  H01M8/1039 ,  H01M8/1081 ,  H01M8/1086 ,  H01B1/12 ,  H01B1/10 ,  H01B13/00 ,  H01M8/02 ,  C08J9/42 ,  H01B1/06 ,  H01M8/10 ,  C25B1/04 ,  C25B9/73

摘要： To provide an electrolyte membrane that exhibits high proton conductivity even at low humidity, the electrolyte membrane includes a composite membrane including: a microporous polyolefin membrane that has an average pore diameter of 1 to 1000 nm and a porosity of 50 to 90% and that can be impregnated with a solvent having a surface free energy of 28 mJ/m2 or more, and an electrolyte containing a perfluorosulfonic acid polymer having an EW of 250 to 850 loaded into the pores of the microporous polyolefin membrane, wherein the membrane thickness of the composite membrane is 1 to 20 μm.

公开(公告)号：US11929531B2

公开(公告)日：2024-03-12

申请号：US17695225

申请日：2022-03-15

申请人： TEIJIN LIMITED

发明人： Takeo Yamaguchi ,  Yuhei Oshiba ,  Hidenori Ohashi ,  Jin Tomatsu ,  Koji Furuya ,  Takao Ohno ,  Mami Nanbu

IPC分类号： H01M8/1062 ,  B01D69/10 ,  B01D71/26 ,  C25B13/08 ,  H01M8/106

CPC分类号： H01M8/1062 ,  B01D69/107 ,  B01D71/261 ,  B01D71/262 ,  C25B13/08 ,  H01M8/106 ,  B01D2323/12 ,  B01D2325/0283 ,  B01D2325/04 ,  B01D2325/24 ,  B01D2325/341 ,  B01D2325/36

摘要： A substrate for a composite membrane includes a microporous polyolefin membrane for carrying a hydrophilic resin compound within the pores of the microporous membrane wherein: the average pore diameter is 1 nm to 50 nm; the porosity is 50% to 78%; the membrane thickness is 1 μm to 12 μm; and, when a mixed solution of ethanol and water (volume ratio 1/2) is dripped onto a surface of the microporous polyolefin membrane which has not undergone hydrophilization treatment, the contact angle θ1 between the droplet and the surface is 0 to 90 degrees 1 second after the dripping, and the contact angle θ2 between the droplet and the surface is 0 to 70 degrees 10 minutes after the dripping, and the rate of change of the contact angle ((θ1−θ2)/θ1×100) is 10 to 50%.

公开(公告)号：US20220209272A1

公开(公告)日：2022-06-30

申请号：US17695225

申请日：2022-03-15

申请人： TEIJIN LIMITED

发明人： Takeo YAMAGUCHI ,  Yuhei Oshiba ,  Hidenori Ohashi ,  Jin Tomatsu ,  Koji Furuya ,  Takao Ohno ,  Mami Nanbu

IPC分类号： H01M8/1062 ,  B01D69/10 ,  C25B13/08 ,  H01M8/106

摘要： A substrate for a composite membrane includes a microporous polyolefin membrane for carrying a hydrophilic resin compound within the pores of the microporous membrane wherein: the average pore diameter is 1 nm to 50 nm; the porosity is 50% to 78%; the membrane thickness is 1 μm to 12 μm; and, when a mixed solution of ethanol and water (volume ratio 1/2) is dripped onto a surface of the microporous polyolefin membrane which has not undergone hydrophilization treatment, the contact angle θ1 between the droplet and the surface is 0 to 90 degrees 1 second after the dripping, and the contact angle θ2 between the droplet and the surface is 0 to 70 degrees 10 minutes after the dripping, and the rate of change of the contact angle ((θ1−θ2)/θ1×100) is 10 to 50%.