公开(公告)号：US20220311030A1

公开(公告)日：2022-09-29

申请号：US17807107

申请日：2022-06-15

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： TAKESHI TERAYAMA ,  TOMOHIRO KUROHA ,  KYOHEI KAWADA

IPC: H01M8/04303 ,  H01M8/04858 ,  H01M8/04089 ,  H01M8/1016 ,  H01M8/1004

Abstract: The fuel cell system of the present disclosure includes: a fuel cell that includes a membrane electrode assembly including a proton conducting ceramic electrolyte membrane, a cathode disposed on a first surface of the electrolyte membrane, and an anode disposed on a second surface of the electrolyte membrane, the fuel cell generating electric power through an electrochemical reaction using a fuel gas and an oxidant gas; a power source that applies a voltage to the fuel cell; and a controller. In a shutdown process, the controller controls the power source to apply the voltage to the fuel cell such that a terminal voltage of the fuel cell is equal to or higher than an open circuit voltage of the fuel cell.

公开(公告)号：US20200028192A1

公开(公告)日：2020-01-23

申请号：US16451165

申请日：2019-06-25

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： SHIGENORI ONUMA ,  TAKASHI KAKUWA ,  YUICHI MIKAMI ,  TOMOHIRO KUROHA

IPC: H01M8/04955 ,  H01M8/04537 ,  H01M8/04746 ,  H01M8/0432 ,  H01M8/1253 ,  H01M8/0612 ,  H01M8/04828 ,  H01M8/04858

Abstract: A fuel cell system includes: a fuel cell stack including a plurality of cells, each of which has a fuel electrode, an air electrode, and an electrolyte, and performs a power generation by a reaction between a fuel gas and air; a fuel supplier supplying the fuel gas to the fuel electrode; an air supplier supplying the air to the air electrode; a voltage detector detecting the voltage of the fuel cell stack; and a controller stopping the supplying of the fuel gas by the fuel supplier and the supplying of the air by the air supplier when the voltage of the fuel cell stack detected by the voltage detector is decreased to be lower than a threshold voltage after the power generation of the fuel cell stack is stopped.

公开(公告)号：US20190305331A1

公开(公告)日：2019-10-03

申请号：US16296163

申请日：2019-03-07

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： TAKEHITO GOTO ,  SHIGENORI ONUMA ,  TOMOHIRO KUROHA

IPC: H01M8/0282 ,  H01M8/1253

Abstract: The fuel cell of the present disclosure includes: a unit cell including: a fuel electrode, an air electrode and electrolyte disposed between the fuel electrode and the air electrodes; a separator for separating a fuel gas flowing though the fuel electrode and air flowing through the air electrode; and a sealing constituted of a glass composition for bonding the separator and the electrolyte, and at least a surface region of the sealing portion exposed to the fuel gas and the air does not contain Ba.

公开(公告)号：US20180138533A1

公开(公告)日：2018-05-17

申请号：US15800070

申请日：2017-11-01

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： YUICHI MIKAMI ,  TAKEHITO GOTO ,  KOSUKE YAMAUCHI ,  TOMOYA KAMATA ,  TOMOHIRO KUROHA ,  YOICHIRO TSUJI

IPC: H01M8/1004 ,  H01M8/1226 ,  C25B1/04 ,  H01B1/08 ,  H01M4/86 ,  H01M8/1246 ,  H01M8/1213

CPC classification number: H01M8/1004 ,  C01G25/006 ,  C01G49/0054 ,  C01G49/009 ,  C01G51/68 ,  C01G53/70 ,  C04B35/01 ,  C04B35/2608 ,  C04B35/486 ,  C04B2235/3213 ,  C04B2235/3215 ,  C04B2235/3224 ,  C04B2235/3225 ,  C04B2235/3227 ,  C04B2235/3275 ,  C04B2235/3279 ,  C04B2235/768 ,  C25B1/04 ,  H01B1/08 ,  H01M4/8652 ,  H01M4/9033 ,  H01M4/9066 ,  H01M8/1213 ,  H01M8/1226 ,  H01M8/1246 ,  H01M2008/1293 ,  H01M2300/0074 ,  H01M2300/0094 ,  Y02E60/366 ,  Y02E60/525 ,  Y02P70/56

Abstract: A membrane electrode assembly includes an electrode consisting of at least one compound selected from the group consisting of lanthanum strontium cobalt complex oxide, lanthanum strontium cobalt iron complex oxide, and lanthanum strontium iron complex oxide, or consisting of a composite of the at least one compound and an electrolyte material, and a first solid electrolyte membrane represented by a composition formula of BaZr1−xLuxO3−δ (0

公开(公告)号：US20220109172A1

公开(公告)日：2022-04-07

申请号：US17551192

申请日：2021-12-15

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： TAKESHI TERAYAMA ,  TOMOHIRO KUROHA ,  KYOHEI KAWADA

IPC: H01M8/04746 ,  H01M8/04303 ,  H01M8/1213

Abstract: A fuel cell system according to the present disclosure includes: a solid oxide fuel cell that produces electricity from an electrochemical reaction by using a fuel and air and that includes a membrane electrode assembly including a proton-conductive electrolyte membrane, a cathode disposed on a first main surface of the electrolyte membrane, and an anode disposed on a second main surface of the electrolyte membrane; and a controller. In the operation stop process for stopping operation of the fuel cell system, the controller is configured to control supply of the fuel at a higher flow rate than the flow rate of the fuel consumed in the solid oxide fuel cell in an open circuit state.

公开(公告)号：US20220029195A1

公开(公告)日：2022-01-27

申请号：US17493912

申请日：2021-10-05

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： KOSUKE NUNOO ,  TAKEHITO GOTO ,  YUICHI MIKAMI ,  TAKESHI TERAYAMA ,  SHIGENORI ONUMA ,  TAKASHI KAKUWA ,  KYOHEI KAWADA ,  TOMOHIRO KUROHA

IPC: H01M10/0562

Abstract: An electrochemical cell includes a first electrolyte layer containing an oxide-ion conductor, a second electrolyte layer containing a proton conductor, a first electrode which is disposed between the first electrolyte layer and the second electrolyte layer and in contact with a first principal surface of the first electrolyte layer and a first principal surface of the second electrolyte layer and into which a gas flows, a second electrode which is provided on a second principal surface of the first electrolyte layer and which generates oxygen, and a third electrode which is provided on a second principal surface of the second electrolyte layer and which generates hydrogen.

公开(公告)号：US20210399324A1

公开(公告)日：2021-12-23

申请号：US17463629

申请日：2021-09-01

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： TOMOYA KAMATA ,  TAKASHI KAKUWA ,  HIROMI KITA ,  TOMOHIRO KUROHA

IPC: H01M8/1213 ,  H01M4/86 ,  H01M8/1253

Abstract: A membrane electrode assembly according to the present disclosure includes an electrode, an electrolyte layer bonded to the electrode and containing an electrolyte having proton conductivity, a metal frame, and a bonding layer disposed between a peripheral part of the electrolyte layer and the metal frame and held in contact with each of the electrolyte layer and the metal frame, wherein the bonding layer has a thickness of greater than or equal to 0.50 mm.

公开(公告)号：US20210320314A1

公开(公告)日：2021-10-14

申请号：US17355263

申请日：2021-06-23

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： KOSUKE NUNOO ,  TAKEHITO GOTO ,  YUICHI MIKAMI ,  TAKESHI TERAYAMA ,  TOMOHIRO KUROHA

IPC: H01M8/1007 ,  H01M8/1004 ,  H01M4/86 ,  H01M4/90

Abstract: A membrane electrode assembly according to the present disclosure is a membrane electrode assembly including: a solid electrolyte membrane containing an electrolyte material; and an electrode in contact with a reactant gas, wherein the electrode includes a structural support including a ceramic member, and a pore extending from a boundary surface in contact with the reactant gas toward the solid electrolyte membrane in the structural support and filled with a filler having at least one selected from the group consisting of hydrogen oxidation activity, oxygen reduction activity, proton reduction activity, steam decomposition activity, and oxide ion oxidation activity.

公开(公告)号：US20200099084A1

公开(公告)日：2020-03-26

申请号：US16533461

申请日：2019-08-06

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： SHIGENORI ONUMA ,  TOMOHIRO KUROHA

IPC: H01M8/22 ,  H01M8/04044 ,  H01M8/04029 ,  H01M8/04089 ,  H01M2/02

Abstract: A fuel cell system includes a fuel cell stack constituted by cells, each of the cells includes a fuel electrode, an air electrode, and an electrolyte, and generate electric power through a reaction of a fuel gas and air, a casing that houses the fuel cell stack, a temperature detector that detects a first temperature, the first temperature is a temperature of the fuel cell stack or inside the casing, and a controller. The controller controls based on the first temperature so as to allow an operation at a first predetermined temperature. The controller controls such that the first temperature reaches a temperature higher than or equal to a second predetermined temperature for a predetermined time. The second predetermined temperature is a temperature at which 475° C. embrittlement that occurs on stainless steel is eliminated. The first predetermined temperature is lower than the second predetermined temperature.

公开(公告)号：US20200044263A1

公开(公告)日：2020-02-06

申请号：US16516874

申请日：2019-07-19

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： TAKASHI KAKUWA ,  HIROMI KITA ,  TOMOYA KAMATA ,  MASATOSHI NAKAMURA ,  TOMOHIRO KUROHA

IPC: H01M8/0271 ,  H01M8/2425 ,  H01M8/1213 ,  C25B9/08

Abstract: A solid oxide fuel cell including unit cells, including: a pair of interconnectors for electrically connecting the unit cells; a membrane-electrode assembly including an electrolyte membrane and a pair of electrode layers disposed with the electrolyte membrane therebetween; a pair of current collectors disposed between the electrode layers and the interconnectors so as to be in contact with the pair of electrode layers and the pair of interconnectors, respectively, and electrically connecting the pair of electrode layers and the pair of interconnectors; and elastic bodies biasing at least one current collector of the pair of current collectors toward a corresponding electrode layer and made of austenitic stainless steel.