-
公开(公告)号：US20240301570A1
公开(公告)日：2024-09-12
申请号：US18661344
申请日：2024-05-10
Inventor： TAKAYUKI NAKAUE , OSAMU SAKAI , YUKIMUNE KANI
Abstract: A compression device includes: an electrochemical cell that includes an anode and a cathode that sandwich an electrolyte membrane; a voltage application unit that applies a voltage between the anode and the cathode; and a metal plate that is exposed to compressed hydrogen generated at the cathode and that is resistant to hydrogen embrittlement. The metal plate includes a first terminal connected to the voltage application unit. The first terminal is directly connected to a second terminal that has a lower resistance than the first terminal. The second terminal is directly connected to the voltage application unit, and the first terminal is connected to the voltage application unit via the second terminal.
-
公开(公告)号：US20240060190A1
公开(公告)日：2024-02-22
申请号：US18500159
申请日：2023-11-02
Inventor： TAKAYUKI NAKAUE , TAKASHI KAKUWA , OSAMU SAKAI , YUKIMUNE KANI
IPC: C25B1/02 , C25B9/19 , C25B11/032 , C25B11/052
CPC classification number: C25B1/02 , C25B9/19 , C25B11/032 , C25B11/052
Abstract: An electrochemical cell for a hydrogen pump includes an electrolyte membrane, an anode catalyst layer disposed on a first main surface of the electrolyte membrane, a cathode catalyst layer disposed on a second main surface of the electrolyte membrane, an anode gas diffusion layer disposed on the anode catalyst layer, and a cathode gas diffusion layer disposed on the cathode catalyst layer. When a voltage is applied between the anode catalyst layer and the cathode catalyst layer, the cathode gas diffusion layer is exposed to a hydrogen-containing gas at a pressure higher than that at the anode gas diffusion layer. A thickness of the anode gas diffusion layer is greater than or equal to a thickness of the cathode gas diffusion layer.
-
公开(公告)号：US20210372379A1
公开(公告)日：2021-12-02
申请号：US17395944
申请日：2021-08-06
Inventor： TAKAYUKI NAKAUE , TAKASHI KAKUWA , HIROMI KITA
IPC: F03G7/00
Abstract: A compressor includes an electrolyte membrane; an anode catalyst layer in contact with a first primary surface of the electrolyte membrane; a cathode catalyst layer in contact with a second primary surface of the electrolyte membrane; an anode diffusion layer disposed on the anode catalyst layer and including a porous carbon sheet; a cathode gas diffusion layer on the cathode catalyst layer; an anode support disposed on the anode diffusion layer and including a metal sheet having a plurality of vent holes; an anode separator disposed on the anode support and having, on the primary surface thereof closer to the anode support, a fluid flow channel through which an anode fluid flows; and a voltage applicator that applies a voltage across the anode catalyst layer and the cathode catalyst layer. The compressor produces compressed hydrogen by causing the voltage applicator to apply the voltage to move extracted protons from an anode fluid supplied to the anode catalyst layer to the cathode catalyst layer via the electrolyte membrane. The flexural strength of the metal sheet is higher than that of the porous carbon sheet.
-
公开(公告)号：US20200340471A1
公开(公告)日：2020-10-29
申请号：US16925371
申请日：2020-07-10
Inventor： TAKAYUKI NAKAUE , KUNIHIRO UKAI , HIROMI KITA
IPC: F04B45/047 , H01M8/04082
Abstract: An electrochemical hydrogen pump includes an electrolyte membrane, an anode catalyst layer in contact with one primary surface of the electrolyte membrane, a cathode catalyst layer in contact with the other primary surface of the electrolyte membrane, an anode gas diffusion layer in contact with the anode catalyst layer, a cathode gas diffusion layer in contact with the cathode catalyst layer, and a voltage applicator that applies a voltage between the anode catalyst layer and the cathode catalyst layer. Application of the voltage by the voltage applicator causes hydrogen in a hydrogen-containing gas supplied to above the anode catalyst layer to move above the cathode catalyst layer and to be pressurized. The anode gas diffusion layer includes a porous carbon sheet that has a smaller porosity in a first surface layer, which is on the anode catalyst layer side, than in the inside layer deeper than the first surface layer.
-
公开(公告)号：US20200011313A1
公开(公告)日：2020-01-09
申请号：US16442578
申请日：2019-06-17
Inventor： KUNIHIRO UKAI , HIROMI KITA , TAKAYUKI NAKAUE
IPC: F04B37/04
Abstract: An electrochemical hydrogen pump includes a hydrogen pump unit including an electrolyte film, an anode catalyst layer, a cathode catalyst layer, an anode gas diffusion layer, an anode separator, a cathode gas diffusion layer, and a cathode separator, a first end plate and a second end plate, a fastener, and a voltage applicator. The electrochemical hydrogen pump transfers and pressurizes hydrogen on the cathode catalyst layer, when a voltage is applied by the voltage applicator. Cathode gas flow channels in which the cathode gas flows are connected to each other. The amount of thickness reduction of the cathode gas diffusion layer due to compression resulting from fastening of the fastener is larger in the hydrogen pump unit positioned at at least one end of the stacked hydrogen pump units than in the hydrogen pump unit positioned at neither end of the stacked hydrogen pump units.
-
Patent Agency Ranking
公开(公告)号：US20240318339A1
公开(公告)日：2024-09-26
申请号：US18733054
申请日：2024-06-04
Inventor： TAKAYUKI NAKAUE , OSAMU SAKAI , HIROMI KITA , YUKIMUNE KANI
CPC classification number: C25B15/083 , C25B1/04 , C25B9/19 , C25B9/75
Abstract: A compression apparatus includes at least one compression unit, an anode end plate provided on an anode separator, a cathode end plate provided on a cathode separator, and a plate-like member. The compression apparatus causes, by using the voltage applier to apply a voltage, protons taken out from an anode fluid that is supplied to the anode to move to the cathode via the electrolyte membrane and generates compressed hydrogen. The plate-like member is provided with a recess in which to store the compressed hydrogen and a groove portion that surrounds an outer periphery of the recess. The groove portion is provided with a seal material and a ring material that is adjacent to an outer edge of the seal material and that surrounds the seal material. An outer peripheral surface of the groove portion and an outer peripheral surface of the ring material are both provided with gradients so as to become wider toward an opening of the groove portion.
-
公开(公告)号：US20230213027A1
公开(公告)日：2023-07-06
申请号：US18183071
申请日：2023-03-13
Inventor： OSAMU SAKAI , HIROMI KITA , TAKASHI KAKUWA , TAKAYUKI NAKAUE
Abstract: A compression apparatus includes an electrolyte membrane, an anode provided on a first principal surface of the electrolyte membrane, a cathode provided on a second principal surface of the electrolyte membrane, an anode separator provided on the anode, a cathode separator provided on the cathode, and a voltage applier that applies a voltage between the anode and the cathode. The compression apparatus causes, by using the voltage applier to apply a voltage, protons taken out from a hydrogen-containing gas that is supplied to the anode to move to the cathode via the electrolyte membrane and produces compressed hydrogen. The anode separator has a first flow channel, provided in a principal surface thereof facing away from the anode, through which a cooling fluid flows.
-
公开(公告)号：US20230078714A1
公开(公告)日：2023-03-16
申请号：US18053390
申请日：2022-11-08
Inventor： TOMOYA KAMATA , TAKAYUKI NAKAUE , YUKIMUNE KANI
Abstract: A hydrogen system includes: a compressor that includes an anode, a cathode, and an electrolyte membrane interposed therebetween and generates compressed hydrogen by applying a voltage between the anode and the cathode to move protons extracted from anode fluid supplied to the anode to the cathode; a voltage applicator that applies the voltage between the anode and the cathode; a first flow passage through which a cathode off-gas containing the compressed hydrogen discharged from the cathode is supplied to the anode of the compressor; a first on-off valve disposed in the first flow passage; and a controller that causes the voltage applicator to apply the voltage with the first on-off valve opened during a period of time from startup of the hydrogen system until supply of the cathode off-gas to a hydrogen reservoir is started.
-
公开(公告)号：US20220081780A1
公开(公告)日：2022-03-17
申请号：US17535615
申请日：2021-11-25
Inventor： TAKAYUKI NAKAUE , CHIKUEN WONG
Abstract: A compression apparatus including an electrolyte membrane; an anode catalyst layer in contact with one of main surfaces; a cathode catalyst layer in contact with the other of the main surfaces; an anode gas diffusion layer in contact with the anode catalyst layer; and a cathode gas diffusion layer in contact with the cathode catalyst layer, the membrane electrode assembly used in a compression apparatus that generates compressed hydrogen by applying voltage between the anode catalyst layer and the cathode catalyst layer to move protons, taken out of an anode fluid supplied to the anode catalyst layer, to the cathode catalyst layer via the electrolyte membrane. The cathode gas diffusion layer includes a porous carbon sheet and a porosity of a first surface layer in an opposite side to a side of the cathode catalyst layer is lower than a porosity of a layer inward from the first surface layer.
-
公开(公告)号：US20210408570A1
公开(公告)日：2021-12-30
申请号：US17471726
申请日：2021-09-10
Inventor： OSAMU SAKAI , YUKIMUNE KANI , TAKASHI KAKUWA , HIROMI KITA , TOMOYA KAMATA , TAKAYUKI NAKAUE
IPC: H01M8/248 , H01M8/0438 , H01M8/0656 , H01M8/1004
Abstract: A compression apparatus includes a stack of electrochemical cells each including an anode, a cathode, and an electrolyte membrane interposed therebetween, a pair of insulating plates disposed at respective ends of the stack in a stacking direction, a pair of end plates disposed on outside surfaces of the respective insulating plates, and a voltage applicator that applies a voltage between the anode and the cathode. The end plate having the cathode gas channel includes a first region that includes an outer peripheral surface of the cathode gas channel and is composed of a first steel material and a second region other than the first region which is composed of a second steel material. The first steel material has higher hydrogen embrittlement resistance than the second steel material, and the second steel material has higher stiffness than the first steel material.
-
-
-
-
-
-
-
-
-
Search Results
21
records
(took 0.019 seconds)
