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：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：US20230026457A1

公开(公告)日：2023-01-26

申请号：US17780718

申请日：2020-11-24

Applicant: WASEDA UNIVERSITY ,  NISSAN CHEMICAL CORPORATION

Inventor： Kenichi OYAIZU ,  Kan HATAKEYAMA ,  Tomoki AKAHANE ,  Choitsu GO ,  Takahiro KASEYAMA

IPC: H01M4/60 ,  H01M4/36 ,  H01M4/58 ,  H01M4/62 ,  H01M10/0525 ,  C08F132/08

Abstract: Provided is an electrode material which is suitable for use as a material for forming electrodes for use in lithium ion secondary batteries, etc. and which makes it possible to heighten the rate characteristics of batteries. The electrode material is characterized by comprising a polymer having, in a side chain, a fluoflavin skeleton such as that shown by the formula and an inorganic active material, the polymer being contained in an amount of 1 mass % or less with respect to the solid components.