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    Catalyst layer for polymer electrolyte fuel cells, membrane-electrode assembly, and polymer electrolyte fuel cell
    1.
    发明授权
    Catalyst layer for polymer electrolyte fuel cells, membrane-electrode assembly, and polymer electrolyte fuel cell 有权

    公开(公告)号：US12176547B2

    公开(公告)日：2024-12-24

    申请号：US17478485

    申请日：2021-09-17

    Applicant: TOPPAN PRINTING CO., LTD.

    Inventor： Hiroaki Koyama ,  Madoka Ozawa

    IPC: H01M4/86 ,  H01M4/90 ,  H01M8/1004 ,  H01M8/1018

    Abstract: A catalyst layer for polymer electrolyte fuel cells that improves drainage or gas diffusion, reduces or prevents the occurrence of cracking in a catalyst layer, enhances catalyst utilization efficiency, exerts high output power and high energy conversion efficiency, and has high durability, and also provides a membrane-electrode assembly and a polymer electrolyte fuel cell using the catalyst layer. The catalyst layer for polymer electrolyte fuel cells contains a catalyst, carbon particles, a polymer electrolyte, and a fibrous material. In the catalyst layer, the carbon particles carry the catalyst1. The catalyst layer for polymer electrolyte fuel cells has voids. The percentage of frequencies of the voids having a cross-sectional area of 10,000 nm2 or more is 13% or more and 20% or less among the voids observed in a thickness-direction cross section of the catalyst layer for polymer electrolyte fuel cells perpendicular to the surface thereof.

    SEALED REDOX BATTERY
    2.
    发明申请
    SEALED REDOX BATTERY 有权

    公开(公告)号：US20240405245A1

    公开(公告)日：2024-12-05

    申请号：US18804658

    申请日：2024-08-14

    Applicant: Standard Energy Inc.

    Inventor： Dongyoung Lee ,  Bugi Kim ,  Dongheun Kim ,  Sanghyun Park ,  Kangyeong Choe

    IPC: H01M8/20 ,  H01M4/90 ,  H01M4/94 ,  H01M4/96 ,  H01M8/04082 ,  H01M8/1018 ,  H01M8/18

    Abstract: The disclosed technology generally relates to energy storage devices, and more particularly to redox batteries. In one aspect, a redox battery comprises a first half cell and a second half cell. The first half cell comprises a positive electrolyte reservoir comprising a first electrolyte contacting a positive electrode and has dissolved therein a first redox couple configured to undergo a first redox half reaction. The second half cell comprises a negative electrolyte reservoir comprising a second electrolyte contacting a negative electrode and has dissolved therein a second redox couple configured to undergo a second redox half reaction. The redox battery additionally comprises an ion exchange membrane separating the positive electrolyte reservoir and the negative electrolyte reservoir. The first half cell, the second half cell and the ion exchange membrane define a redox battery cell that is sealed in a casing.

    IONOMERS FOR IMPROVING THE DURABILITY OF MEMBRANE ELECTROCHEMICAL DEVICES AND ELECTRODES DERIVED THEREFROM
    6.
    发明公开
    IONOMERS FOR IMPROVING THE DURABILITY OF MEMBRANE ELECTROCHEMICAL DEVICES AND ELECTRODES DERIVED THEREFROM 审中-公开

    公开(公告)号：US20240120456A1

    公开(公告)日：2024-04-11

    申请号：US18276792

    申请日：2022-02-10

    Applicant: Georgia Tech Research Corporation

    Inventor： PAUL KOHL ,  MRINMAY MANDAL

    IPC: H01M4/04 ,  H01M4/88 ,  H01M6/18 ,  H01M8/1018

    CPC classification number: H01M4/04 ,  H01M4/8878 ,  H01M6/181 ,  H01M8/1018

    Abstract: An electrochemical device (100) includes an ion exchange membrane (120), a first electrode (110) adjacent to a first side thereof and a second electrode (130) adjacent to a second side thereof. At least one of the first electrode (110) and the second electrode (130) includes a current collector layer (112, 132) and a catalyzing layer (114, 134) applied thereto. The catalyzing layer (114, 134) includes an ion-conducting polymer (116), a plurality of electroactive catalyst particles (115, 118) and an adhesive (118) that binds the polymer (116), the catalyst particles (115, 118) and the current collector layer together (112, 132). In a method of making an electrode, an ion-conducting polymer, a plurality of electroactive catalyst particles and an adhesive are mixed in a solvent, which is applied to a current collector layer. The solvent is evaporated so that the adhesive binds the polymer and the catalyst particles to the current collector.

    CARBON COATED ELECTRODES
    8.
    发明公开
    CARBON COATED ELECTRODES 审中-公开

    公开(公告)号：US20240035177A1

    公开(公告)日：2024-02-01

    申请号：US18264610

    申请日：2023-01-20

    Applicant: Nanofilm Technologies International Limited

    Inventor： Zhi TANG ,  Ting WANG ,  Xu SHI

    IPC: H01M4/86 ,  H01M8/1018 ,  H01M4/88 ,  C25B11/04 ,  C25B11/036 ,  C23C14/35

    CPC classification number: H01M4/8657 ,  H01M4/8673 ,  H01M8/1018 ,  H01M4/8871 ,  C25B11/04 ,  C25B11/036 ,  C23C14/35 ,  H01M2008/1095

    Abstract: An electrode for electrochemical applications is coated with a layer of a-C, wherein the layer of a-C comprises at least 10 each of first and second sub-layers, being (i) first sub-layers having high conductivity with a sp2 content of 60-95%, alternating with (ii) second sub-layers having high corrosion resistance with a sp2 content of 50-90%, wherein the sp2 content of the first sub-layers is at least 3% greater than the sp2 content of the second sub-layers. A method of making such electrodes comprises:⋅a) depositing a first sub-layer comprising a-C, ⋅b) depositing a second sub-layer comprising a-C wherein the sp2 content of the first sub-layer is at least 3% greater than the sp2 content of the second sub-layer, and ⋅c) repeating the steps above to deposit at least 10 first sub-layers alternating with 10 second sub-layers, so as to produce the electrodes.

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