公开(公告)号：US20150099215A1

公开(公告)日：2015-04-09

申请号：US14568324

申请日：2014-12-12

Applicant: HYUNDAI MOTOR COMPANY ,  KIA MOTORS CORPORATION

Inventor： Bo Ki Hong ,  Kook Il Han ,  Sae Hoon Kim ,  Jae Jun Ko

IPC: H01M8/02 ,  H01M8/24

CPC classification number: H01M8/023 ,  H01M8/0234 ,  H01M8/241 ,  Y02P70/56

Abstract: The present invention provides a fuel cell stack with enhanced freeze-thaw durability. In particular, the fuel cell stack includes a gas diffusion layer between a membrane-electrode assembly and a bipolar plate. The gas diffusion layer has a structure that reduces contact resistance in a fuel cell and is cut at a certain angle such that the machine direction (high stiffness direction) of GDL roll is not in parallel with the major flow field direction of the bipolar plate, resulting in an increased GDL stiffness in a width direction perpendicular to a major flow field direction of a bipolar plate.

Abstract translation: 本发明提供一种具有增强的冻融耐久性的燃料电池堆。 特别地，燃料电池堆包括在膜 - 电极组件和双极板之间的气体扩散层。 气体扩散层具有降低燃料电池中的接触电阻并以一定角度切割的结构，使得GDL辊的机器方向（高刚度方向）不与双极板的主流场方向平行， 导致在垂直于双极板的主流场方向的宽度方向上增加的GDL刚度。

公开(公告)号：US11909084B2

公开(公告)日：2024-02-20

申请号：US17317352

申请日：2021-05-11

Applicant: Hyundai Motor Company ,  Kia Corporation

Inventor： Byoungsu Kim ,  Bo Ki Hong ,  Ji Hoon Yang

IPC: H01M8/1051 ,  H01M4/90 ,  H01M8/1027 ,  H01M8/1032 ,  H01M8/1039 ,  H01M8/1069 ,  H01M8/10

CPC classification number: H01M8/1051 ,  H01M4/9075 ,  H01M8/1027 ,  H01M8/1032 ,  H01M8/1039 ,  H01M8/1069 ,  H01M2008/1095 ,  H01M2300/0082 ,  H01M2300/0094

Abstract: Disclosed are an electrolyte membrane with improved ion conductivity and enhanced water transport and a method for manufacturing the same. The electrolyte membrane includes an ion transport layer including an ionomer having proton conductivity and a catalyst dispersed in the ion transport layer, and the catalyst includes a support including a shell configured to have a designated shape and size and to be hollow and at least one hole configured to allow an inner space to communicate with an outside therethrough, and a metal supported on the support.

公开(公告)号：US11791474B2

公开(公告)日：2023-10-17

申请号：US17078415

申请日：2020-10-23

Applicant: HYUNDAI MOTOR COMPANY ,  KIA MOTORS CORPORATION

Inventor： Byoungsu Kim ,  Bo Ki Hong

IPC: H01M4/90 ,  H01M4/92 ,  H01M4/88 ,  H01M8/1004 ,  H01M8/1053 ,  H01M8/1069 ,  H01M8/1051 ,  H01M8/1046

CPC classification number: H01M4/9083 ,  H01M4/881 ,  H01M4/9041 ,  H01M4/9075 ,  H01M4/921 ,  H01M4/925 ,  H01M4/926 ,  H01M8/1004 ,  H01M8/1046 ,  H01M8/1051 ,  H01M8/1053 ,  H01M8/1069

Abstract: The present disclosure relates to an electrolyte membrane for fuel cells including a hydrogen peroxide generating catalyst and a hydrogen peroxide decomposing catalyst, the electrolyte membrane exhibiting highly improved durability, and a method of manufacturing the same. Specifically, the electrolyte membrane includes a support and a catalyst particle including a catalyst metal supported by the support, the catalyst metal including one selected from the group consisting of a first metal having catalyst activity to generate hydrogen peroxide, a second metal having catalyst activity to decompose hydrogen peroxide, and a combination thereof.

公开(公告)号：US11522208B2

公开(公告)日：2022-12-06

申请号：US16998638

申请日：2020-08-20

Applicant: HYUNDAI MOTOR COMPANY ,  KIA MOTORS CORPORATION ,  INDUSTRY FOUNDATION OF CHONNAM NATIONAL UNIVERSITY

Inventor： Inyu Park ,  Bo Ki Hong ,  Jae Woon Hong ,  Aniket Kumar ,  Sun Ju Song

IPC: H01M8/1213 ,  H01M8/1039 ,  H01M8/1069 ,  H01M8/10

Abstract: The present disclosure relates to a membrane-electrode assembly for fuel cells and a method of manufacturing the same, and more particularly to a membrane-electrode assembly to which an electrolyte membrane including a cerium oxide and phosphoric acid functionalized graphene oxide is applied, whereby chemical durability and proton conductivity of the membrane-electrode assembly are improved.

公开(公告)号：US11444287B2

公开(公告)日：2022-09-13

申请号：US17039037

申请日：2020-09-30

Applicant: HYUNDAI MOTOR COMPANY ,  KIA MOTORS CORPORATION

Inventor： Jongkil Oh ,  Bo Ki Hong

IPC: H01M4/86 ,  H01M8/0656 ,  H01M4/88 ,  H01M4/90 ,  H01M4/92

Abstract: A catalyst complex for fuel cells and a method for manufacturing an electrode including the same are disclosed. The catalyst complex for fuel cells, which is included in an electrode for fuel cells, includes a first catalyst configured to cause hydrogen oxidation reaction (HOR) and a second catalyst configured to cause water electrolysis reaction, i.e., oxygen evolution reaction (OER). The outer surface of the first catalyst is coated with a first ionomer binder, the outer surface of the second catalyst is coated with a second ionomer binder, and an equivalent weight (EW) of the second ionomer binder differs from an equivalent weight (EW) of the first ionomer binder.

公开(公告)号：US11349140B2

公开(公告)日：2022-05-31

申请号：US16233467

申请日：2018-12-27

Applicant: Hyundai Motor Company ,  Kia Motors Corporation

Inventor： Jae Jun Ko ,  Bo Ki Hong ,  In Yu Park ,  Hyoung Juhn Kim ,  So Young Lee ,  Song I Oh

IPC: H01M8/1051 ,  C09K15/02 ,  C09K15/32 ,  H01M8/10

Abstract: Disclosed is an antioxidant for an electrolyte membrane of fuel cells. The antioxidant may include a support including silicon dioxide and having a nanotube shape, and a metal oxide supported on the support.

公开(公告)号：US11239472B2

公开(公告)日：2022-02-01

申请号：US16597500

申请日：2019-10-09

Applicant: Hyundai Motor Company ,  Kia Motors Corporation

Inventor： Inyu Park ,  Jae Jun Ko ,  Bo Ki Hong

IPC: H01M8/1053 ,  H01M4/88 ,  H01M8/126

Abstract: Disclosed is a method of manufacturing an electrolyte membrane including an antioxidant. The method may include forming a first dispersion liquid including deionized water, a first ionomer dispersion solution and an antioxidant, and forming a second dispersion liquid including the first dispersion liquid and a second ionomer dispersion solution.

公开(公告)号：US20220021012A1

公开(公告)日：2022-01-20

申请号：US17121067

申请日：2020-12-14

Applicant: Hyundai Motor Company ,  Kia Motors Corporation

Inventor： Il Seok Chae ,  Bo Ki Hong

IPC: H01M8/1004 ,  C08J5/22 ,  H01M8/1044 ,  H01M8/1069

Abstract: Disclosed is an electrolyte membrane for a membrane-electrode assembly, which may include a filler that is a polymer compound (oligomer) having a low molecular weight. The electrolyte membrane may suitably include an oligomeric poly(vinylpyrrolidone) compound including a sulfonic acid group. The electrolyte membrane for a membrane-electrode assembly may have improved proton conductivity.

公开(公告)号：US20210395116A1

公开(公告)日：2021-12-23

申请号：US17092501

申请日：2020-11-09

Applicant: Hyundai Motor Company ,  Kia Motors Corporation

Inventor： Jung Han Yu ,  Ju Han Kim ,  Bo Ki Hong ,  Keun Bong Ham

IPC: C02F1/461 ,  C02F1/66

Abstract: A water electrolysis system includes a water electrolytic stack, a water reservoir connected to the water electrolytic stack to supply water to the water electrolytic stack, a water circulation pump supplying the water in the water reservoir to the electrolytic stack; and a control unit configured to, during an operation stoppage of the electrolysis system, control the driving of the water circulation pump to convert the water in the electrolytic stack from an acidic condition to a neutral condition and to regulate a unit cell voltage of the electrolytic stack to a voltage such that an electrolysis reaction does not occur and a chemical state of an anode catalyst is stably maintained.

公开(公告)号：US11196070B2

公开(公告)日：2021-12-07

申请号：US16675743

申请日：2019-11-06

Applicant: Hyundai Motor Company ,  Kia Motors Corporation ,  Industry Foundation of Chonnam National University

Inventor： In Yu Park ,  Jong Kil Oh ,  Bo Ki Hong ,  Aniket Kumar ,  Sun Ju Song ,  Jae Woon Hong

IPC: H01M8/1004 ,  H01M8/1016 ,  H01M8/1018

Abstract: Disclosed are a membrane-electrode assembly for fuel cells and a method of manufacturing the same. The membrane-electrode assembly for fuel cells may include an electrolyte membrane including a phosphonic acid functionalized graphene oxide in order to improve the mechanical strength and proton conductivity thereof and a method of manufacturing the same.