公开(公告)号：US20190267688A1

公开(公告)日：2019-08-29

申请号：US16411182

申请日：2019-05-14

Applicant: DENSO CORPORATION

Inventor： Yosuke SUZUKI ,  Kan KITAGAWA ,  Hidehiko HIRAMATSU

IPC: H01M12/02 ,  H01M12/08 ,  H01M4/92 ,  H01M4/90

Abstract: The present disclosure provides an electrochemical device system including an electrochemical device and a controller. The electrochemical device includes a negative electrode capable of occluding and releasing lithium ion, a positive electrode using oxygen as a positive electrode active material and reducing oxygen during discharge, and a solid electrolyte disposed between the negative electrode and the positive electrode and capable of conducting lithium ion. The controller performs current control during discharge of the electrochemical device.

公开(公告)号：US20210066734A1

公开(公告)日：2021-03-04

申请号：US17001964

申请日：2020-08-25

Applicant: DENSO CORPORATION ,  WASEDA UNIVERSITY

Inventor： Kan KITAGAWA ,  Kenji NAKAMURA ,  Hiroaki YOTOU ,  Atsushi NAKAJIMA ,  Kenichi OYAIZU ,  Kan HATAKEYAMA ,  Yota SUGAI

IPC: H01M8/04186 ,  H01M8/18 ,  H01M8/04082

Abstract: A redox flow battery system includes a redox flow battery cell, a first circulation mechanism, and a second circulation mechanism. The redox flow battery cell includes a positive electrode chamber housing a positive electrode, a negative electrode chamber housing a negative electrode, and a separator separating the positive electrode chamber and the negative electrode chamber. The first circulation mechanism and the second circulation mechanisms circulate electrolytic solutions into the positive electrode chamber and the negative electrode chamber, respectively. The separator is a porous body. Each of the electrolytic solutions contains an active material and a mediator that has a diameter larger than pore distribution d50 of the separator.

公开(公告)号：US20240363880A1

公开(公告)日：2024-10-31

申请号：US18640106

申请日：2024-04-19

Applicant: DENSO CORPORATION ,  WASEDA UNIVERSITY

Inventor： Kan KITAGAWA ,  Ryota SHINOZAKI ,  Yuto IGARASHI ,  Kan HATAKEYAMA ,  Kenichi OYAIZU

IPC: H01M8/18

CPC classification number: H01M8/188

Abstract: A redox flow battery includes a positive-side electrode tank that stores an electrolytic solution to be circulated to a positive electrode chamber in which a positive electrode is accommodated; and a negative-side electrode tank that stores an electrolytic solution to be circulated to a negative electrode chamber in which a negative electrode is accommodated. Each electrolytic solution contains an active material and a mediator, and the active material is solid in each electrolytic solution. An electrolyte concentration in each electrolytic solution is adjusted such that a potential difference between an equilibrium potential of the active material and an equilibrium potential of the mediator is equal to or less than a predetermined potential difference.

公开(公告)号：US20190267687A1

公开(公告)日：2019-08-29

申请号：US16071149

申请日：2017-03-06

Applicant: DENSO CORPORATION

Inventor： Yosuke SUZUKI ,  Kan KITAGAWA ,  Hidehiko HIRAMATSU

IPC: H01M12/02 ,  H01M12/08 ,  H01M4/48

Abstract: A lithium air battery system includes: a lithium air battery that includes a negative electrode made of a negative electrode material for absorbing and releasing a lithium ion, a positive electrode made of a positive electrode material and including a catalyst for reducing oxygen which is positive electrode active material, and a solid electrolyte layer including a solid electrolyte interposed between the negative electrode and the positive electrode; and a humidity control unit that adjusts a humidity of gas which includes oxygen and contacts with at least the positive electrode. The humidity control unit adjusts the humidity of the gas based on a temperature of the lithium air battery at least during operation of the lithium air battery.