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    VANADIUM ELECTROLYTE, PREPARATION PROCESS AND USE THEREOF
    1.
    发明公开
    VANADIUM ELECTROLYTE, PREPARATION PROCESS AND USE THEREOF 审中-实审

    公开(公告)号：EP4354564A1

    公开(公告)日：2024-04-17

    申请号：EP23178094.1

    申请日：2023-06-07

    申请人： Hunan Province Yinfeng New Energy Co., Ltd

    发明人： WU, Xiongwei ,  XU, Hui ,  XIE, Hao ,  LV, Shanguang ,  WU, Xuewen ,  FU, Na

    IPC分类号： H01M8/18

    CPC分类号： H01M8/188 ,  H01M2300/000220130101

    摘要： The present disclosure provides a vanadium electrolyte, a preparation method and use thereof. The method includes: adding sulfuric acid into vanadium-containing ore, and stirring to obtain a mixture; curing the mixture to obtain a clinker; leaching the clinker with water to obtain a vanadium-containing leaching solution; adding a first impurity-removing agent into the vanadium-containing leaching solution to obtain a first purified solution; adding an oxidizing agent, a ferric phosphate dihydrate seed crystal and a second impurity-removing agent into the first purified solution to obtain a second purified solution; adding a reducing agent and a flocculating agent into the second purified solution, and filtering a resultant solution to obtain a filtered solution; mixing the filtered solution with an extraction liquid to obtain a vanadium-supported organic phase; stripping the vanadium-supported organic phase to obtain a stripping liquid; and removing an organic phase from the stripping liquid to obtain the vanadium electrolyte.

    AQUEOUS SECONDARY BATTERY
    7.
    发明公开
    AQUEOUS SECONDARY BATTERY 审中-公开

    公开(公告)号：EP4443559A1

    公开(公告)日：2024-10-09

    申请号：EP24165312.0

    申请日：2024-03-21

    申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA

    发明人： SUYAMA, Hiroshi ,  SATO, Shigeki ,  TANAKA, Bunta

    IPC分类号： H01M4/50 ,  H01M10/22 ,  H01M10/36

    CPC分类号： H01M2300/000220130101 ,  H01M4/50 ,  H01M10/22 ,  H01M10/36

    摘要： The aqueous secondary battery of the present disclosure comprises:
    a positive electrode active material layer, an aqueous electrolyte, and a negative electrode active material layer, wherein
    the aqueous electrolyte contains an aqueous solvent and potassium polyphosphate which has two or more elemental phosphorus, and any one of potassium ion, proton, hydroxide ion, and polyphosphoric anion is a carrier ion,
    a positive electrode active material contained in the positive electrode active material layer has a monoclinic crystal structure represented by space group C2/m, is represented by composition formula MnO2·AxBy(H2O)z, and the A, B, and H2O are present in a space interposed between layers composed of Mn-O octahedrons,
    A is an alkali metal or alkali rare earth metal,
    B is an anion, 0

    AQUEOUS BATTERY
    10.
    发明公开
    AQUEOUS BATTERY 审中-实审

    公开(公告)号：EP4418372A1

    公开(公告)日：2024-08-21

    申请号：EP24157677.6

    申请日：2024-02-14

    申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA

    发明人： SUYAMA, Hiroshi ,  KATAYAMA, Yukihisa

    IPC分类号： H01M6/04

    CPC分类号： H01M2300/001420130101 ,  H01M2300/000220130101 ,  H01M6/045

    摘要： Disclosed is an aqueous battery, in which not only a predetermined aqueous electrolyte solution is adopted, but also an ionic conduction path between positive and negative electrodes is ensured. The aqueous battery of the present disclosure includes a positive electrode, an aqueous electrolyte solution, a separator and a negative electrode, in which the aqueous electrolyte solution contains water and a potassium salt dissolved in the water, the aqueous electrolyte solution has no freezing point at -60°C or higher, and at least one element constituting the separator is the same in type as at least one element constituting an anion of the potassium salt.