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公开(公告)号：US20180190994A1
公开(公告)日：2018-07-05
申请号：US15904562
申请日：2018-02-26
IPC分类号： H01M4/86 , C08F214/26 , C08J3/05 , C08J5/22 , H01M8/1004 , H01M4/88 , H01M4/92 , H01M8/1018
CPC分类号： H01M4/8663 , C08F8/00 , C08F16/24 , C08F214/262 , C08J3/03 , C08J3/05 , C08J5/225 , C08J2327/24 , H01M4/8668 , H01M4/8825 , H01M4/8828 , H01M4/8882 , H01M4/926 , H01M8/1004 , H01M8/1018 , H01M8/1023 , H01M8/1039 , H01M2008/1095 , H01M2300/0082 , Y02P70/56
摘要： To provide a process for producing a liquid composition capable of forming a polymer electrolyte membrane of which breakage at the time of drying is suppressed; a process for producing a catalyst layer-forming coating liquid capable of forming a catalyst layer of which breakage at the time of drying is suppressed; and a method for producing a membrane/electrode assembly by which a catalyst layer or a polymer electrolyte membrane of which breakage at the time of drying is suppressed, can be formed.A process for producing a liquid composition, which comprises holding a fluorinated polymer having —SO2F groups at from 110 to 130° C. for at least 45 minutes; cooling the fluorinated polymer having —SO2F groups held at from 110 to 130° C. to less than 110° C.; converting the —SO2F groups in the fluorinated polymer having —SO2F groups cooled to less than 110° C. to ion exchange groups thereby to obtain a fluorinated polymer having ion exchange groups; and mixing the fluorinated polymer having ion exchange groups and a liquid medium.
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公开(公告)号：US10035898B2
公开(公告)日：2018-07-31
申请号：US15799205
申请日：2017-10-31
CPC分类号： C08K5/02 , C08F214/262 , C08J3/093 , C08J5/2237 , C08J7/047 , C08J2327/18 , C08J2427/12 , C08K3/04 , C08K3/08 , C08K5/06 , C08L27/12 , C08L29/10 , C09D127/18 , H01M4/8828 , H01M4/8832 , H01M4/926 , H01M8/02 , H01M8/0202 , H01M8/1039 , H01M2008/1095 , C08K3/01
摘要： To provide a method for producing a liquid composition or a coating liquid for forming a catalyst layer, which can make cracking less likely to occur at the time of forming a solid polymer electrolyte membrane or a catalyst layer; and a method for producing a membrane electrode assembly, which can make cracking less likely to occur at the time of forming the catalyst layer or the solid polymer electrolyte membrane. This liquid composition is prepared by dispersing in a medium containing water and a hydrocarbon-type alcohol a polymer (x) having a structural unit having a ring structure and a structural unit having an ion exchange group, or a polymer (y) having either one or both of a structural unit having two ion-exchange groups in a pendant group and a structural unit having one ion exchange group in a short-chain pendant group, to prepare a dispersion in which the concentration of the polymer (x) or the polymer (y) is from 10 to 26 mass %, and mixing the dispersion and a fluorinated solvent so that the sum of the concentration of the polymer (x) or the polymer (y) and the concentration of the fluorinated solvent becomes to be from 12 to 35 mass %.
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3.发明申请公开(公告)号：US20170288249A1
公开(公告)日：2017-10-05
申请号：US15627861
申请日：2017-06-20
发明人： Satoru HOMMURA , Susumu Saito , Hiroyuki Watabe
IPC分类号： H01M8/1039 , C08F214/18 , H01M8/1018 , H01M4/92 , H01B1/12 , C08F8/12
CPC分类号： H01M8/1039 , C08F8/12 , C08F214/184 , C08J5/2237 , C08J2327/14 , C08L29/10 , H01B1/06 , H01B1/122 , H01M4/926 , H01M8/02 , H01M8/10 , H01M8/1018 , H01M2008/1095
摘要： To provide a membrane/electrode assembly excellent in the power generation characteristics in a wide temperature range and a wide humidity range; an electrolyte material suitable for a catalyst layer of the membrane/electrode assembly; and a liquid composition suitable for forming a catalyst layer of the membrane/electrode assembly.To use an electrolyte material which is formed of a polymer (H) obtained by converting precursor groups in a polymer (F) having structural units (A) based on a perfluoromonomer having a precursor group represented by the formula (g1), structural units (B) represented by the formula (u2), and structural units (C) based on tetrafluoroethylene, wherein the proportion of the structural units (A) is from 8 to 19 mol %, the proportion of the structural units (B) is from 65 to 80 mol %, and the proportion of the structural units (C) is from 1 to 27 mol %, to ion exchange groups.
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