Diffusion media and method of preparation

    公开(公告)号:US09698431B2

    公开(公告)日:2017-07-04

    申请号:US13483717

    申请日:2012-05-30

    摘要: Resinous fibers of nanometer to micrometer width dimensions are drawn from a multi-component system by a melt extrusion process. The process includes a step of combining a fiber resin with a water-soluble carrier resin to form a resinous mixture. The resinous mixture is extruded to form an extruded resinous mixture, the extruded resinous mixture having strands of the fiber resin with the carrier resin. The extruded resinous mixture is then contacted with water to separate the strands of the fiber resin from the carrier resin. An electrically conductive fibrous sheet is then formed from the strands of fiber resin. The fibrous sheets are useful as diffusion layers in fuel cells.

    Base material for gas diffusion electrode

    公开(公告)号:US09685663B2

    公开(公告)日:2017-06-20

    申请号:US14891025

    申请日:2014-05-15

    摘要: The base material for a gas diffusion electrode of the present invention comprises a nonwoven fabric containing conductive fibers that contain conductive particles at least in the inside of an organic resin, and is characterized in that a specific apparent Young's modulus of the base material for a gas diffusion electrode is 40 [MPa/(g/cm3)] or more. Since the base material contains conductive fibers that contain conductive particles at least in the inside of an organic resin, it is flexible, and as a result, a polymer electrolyte membrane is not directly damaged. Further, since the specific apparent Young's modulus is 40 [MPa/(g/cm3)] or more, which indicates a high rigidity, and swelling and shrinkage of the polymer electrolyte membrane can be inhibited, cracking of the polymer electrolyte membrane can be avoided.

    GAS DIFFUSION ELECTRODE SUBSTRATE
    18.
    发明申请
    GAS DIFFUSION ELECTRODE SUBSTRATE 审中-公开
    气体扩散电极基板

    公开(公告)号:US20170012296A1

    公开(公告)日:2017-01-12

    申请号:US15119325

    申请日:2015-02-17

    摘要: A gas diffusion electrode substrate that is used in a fuel cell, wherein a microporous layer constituted by a carbon based filler and a fluororesin is formed on one surface of the electrode substrate, the sliding angle of water on the surface on the opposite side of the surface on which the microporous layer is formed is 30 degrees or less, and the through-plane gas permeation resistance is 15 to 190 mmAq.

    摘要翻译: 在燃料电池中使用的气体扩散电极基板,其特征在于,在所述电极基板的一个面上形成由碳基填料和氟树脂构成的微孔层,所述气体扩散电极基板的表面上的水的滑动角 其上形成有微孔层的表面为30度以下,贯通面透气阻力为15〜190mmAq。

    Membrane electrode assemblies
    19.
    发明授权
    Membrane electrode assemblies 有权
    膜电极组件

    公开(公告)号:US09537168B2

    公开(公告)日:2017-01-03

    申请号:US14525804

    申请日:2014-10-28

    申请人: BASF SE

    摘要: The present invention relates to improved membrane electrode assemblies, having two electrochemically active electrodes separated by a polymer electrolyte membrane.The membrane electrode assemblies according to the instant invention contains at least one phosphoric acid-containing polymer electrolyte membrane and two gas diffusion electrodes one of each located at both sides of said membrane, each of the gas diffusion electrodes having at least one catalyst layer facing towards the membrane. At least one of the gas diffusion electrodes contains a gas diffusion medium comprising an electrically conductive macroporous layer in which the pores have a mean pore diameter in the range from 10 μm to 30 μm and at least one micro porous layer arranged between said gas diffusion medium and said catalyst layer facing towards the membrane having a defined pore void volume and pore hydrophobicity measured by the Cobb Titration.

    摘要翻译: 根据本发明的膜电极组件包含至少一个含磷酸的聚合物电解质膜和两个位于所述膜两侧的气体扩散电极,每个气体扩散电极具有至少一个催化剂层, 膜。 气体扩散电极中的至少一个包含气体扩散介质,该气体扩散介质包括导电性大孔层,其中孔的平均孔径在10μm至30μm的范围内,并且至少一个微孔层布置在所述气体扩散介质之间 并且所述催化剂层面向膜,其具有限定的孔隙体积和通过Cobb滴定测量的孔疏水性。

    FUNCTIONAL POLYMER MEMBRANE AND METHOD FOR PRODUCING SAME
    20.
    发明申请
    FUNCTIONAL POLYMER MEMBRANE AND METHOD FOR PRODUCING SAME 审中-公开
    功能性聚合物膜及其制造方法

    公开(公告)号:US20160369073A1

    公开(公告)日:2016-12-22

    申请号:US15254520

    申请日:2016-09-01

    摘要: Provided is a functional polymer membrane having a structure represented by the following Formula (1) and a structure represented by the following Formula (2), in which an ion exchange capacity is 2.0 meq/g to 7.0 meq/g; and a method for producing the same, —S-LL1-LL-LL2-S—   Formula (1) in Formula (1), LL represents a single bond or an alkylene group which may have a substituent, —O—, —S—, —NRZ— or a linking group obtained by combining these, LL1 and LL2 represent —(CR1R2)I— or —(CR1R2)I—C(═O)O— (in which the atom bonded to LL is an oxygen atom), R1 and R2 represent a hydrogen atom or an alkyl group, I represents 1 or 2, RZ represents a hydrogen atom or a substituent, however, in a case where terminal atoms of a substituent in LL and a substituent of RZ are a sulfur atom, LL is the sulfur atom having a bond to be incorporated into the polymer chain, and in Formula (2), L1 represents an alkylene group or an alkenylene group, Ra, Rb, Rc, and Rd each independently represent an alkyl group or an aryl group, Ra and Rb, or/and Rc and Rd may be bonded to each other to form a ring, n1 represents an integer of 1 to 10, and X1− and X2− each independently represent an organic or inorganic anion.

    摘要翻译: 提供具有由下式(1)表示的结构和由下式(2)表示的结构的功能性聚合物膜,其中离子交换容量为2.0meq / g至7.0meq / g; 及其制作方法,€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ-S-LL 1 -LL-LL 2 -S-€ƒ€ƒ€ƒ€ƒFormula(1 在式(1)中,LL表示单键或可以具有取代基的亚烷基,-O-,-S-,-NR Z - 或通过组合这些获得的连接基,LL 1和LL 2表示 - (CR 1 R 2)I - 或 - (CR 1 R 2)I -C(= O)O-(其中与LL键合的原子是氧原子),R 1和R 2表示氢原子或 烷基,I表示1或2,RZ表示氢原子或取代基,但是在LL中的取代基的末端原子和RZ的取代基为硫原子的情况下,LL为与硫原子键 在式(2)中,L 1表示亚烷基或亚烯基,Ra,Rb,Rc和Rd各自独立地表示烷基或芳基,Ra和Rb,或/ 并且R c和R d可以彼此键合形成环,n1表示1〜10的整数 d X 1 - 和X 2 - 各自独立地表示有机或无机阴离子。