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2317 条记录 (耗时 0.018 秒)

    COMPOSITE ELECTRODE PLATE, AND PREPARATION METHOD THEREFOR AND APPLICATION THEREOF
    1.
    发明公开
    COMPOSITE ELECTRODE PLATE, AND PREPARATION METHOD THEREFOR AND APPLICATION THEREOF 审中-公开

    公开(公告)号：EP4443534A1

    公开(公告)日：2024-10-09

    申请号：EP22906202.1

    申请日：2022-11-24

    申请人： Trina Storage Solutions (Jiangsu) Co., Ltd

    发明人： LU, Lin ,  LI, Qingling ,  JIANG, Zhiyi

    IPC分类号： H01M4/13 ,  H01M10/0525

    CPC分类号： Y02E60/10 ,  H01M4/13 ,  H01M10/0525 ,  H01M4/139 ,  H01M4/62 ,  H01M10/42

    摘要： Provided in the present invention are a composite electrode plate, and a preparation method therefor and the application thereof. The composite electrode plate comprises a current collector, an active substance layer, and a contact resistance regulation and control layer, which is arranged between the current collector and the active substance layer, wherein the contact resistance regulation and control layer comprises a first contact resistance regulation and control layer, a second contact resistance regulation and control layer, a third contact resistance regulation and control layer, a fourth contact resistance regulation and control layer and a fifth contact resistance regulation and control layer, which are sequentially arranged in parallel; and the materials of the first contact resistance regulation and control layer, the third contact resistance regulation and control layer and the fifth contact resistance regulation and control layer are the same, and the materials of the second contact resistance regulation and control layer and the fourth contact resistance regulation and control layer are the same. In the present invention, the contact resistance between a current collector and an active substance coating is controlled to reduce or eliminate the phenomenon of the current density at an edge being large, such that the uniform reaction of a whole active substance layer is achieved, and the cycle life is prolonged.

    ELECTROCHEMICAL DEVICE AND ELECTRONIC DEVICE
    4.
    发明公开
    ELECTROCHEMICAL DEVICE AND ELECTRONIC DEVICE 审中-公开

    公开(公告)号：EP4439759A1

    公开(公告)日：2024-10-02

    申请号：EP21965900.0

    申请日：2021-11-30

    申请人： Ningde Amperex Technology Limited

    发明人： WANG, Kai ,  TANG, Jia

    IPC分类号： H01M10/0525 ,  H01M4/13

    CPC分类号： Y02E60/10 ,  H01M4/13 ,  H01M10/0525

    摘要： This application relates to an electrochemical device and an electronic device. The electrochemical device includes a positive electrode, wherein the positive electrode includes a positive active material layer, the positive active material layer includes a positive active material, the positive active material includes a first substrate and a first region disposed on a surface of the first substrate, and based on a molar content of a Co element in the first region, a molar percentage X of an M1 element in the first region is ≥ 0.5%, wherein M1 includes at least one of aluminum, magnesium, titanium, zirconium, manganese, lutetium, barium, nickel, lanthanum, yttrium, niobium, tungsten, calcium, sodium, selenium, or sulfur; and a negative electrode, wherein the negative electrode includes a negative active material layer; and the electrochemical device satisfies: 1.3 ≤ Pnegative/Ppositive ≤ 3.5, wherein Pnegative is a porosity of the negative active material layer, and Ppositive is a porosity of the positive active material layer. In this application, the porosity of the positive active material layer, the porosity of the negative active material layer and the surface element content of the positive active material are regulated, so that the electrochemical device has an excellent cycle performance under a high voltage.

    POSITIVE ELECTRODE LITHIUM SUPPLEMENTATION ADDITIVE, AND PREPARATION METHOD THEREFOR AND USE THEREOF
    10.
    发明公开
    POSITIVE ELECTRODE LITHIUM SUPPLEMENTATION ADDITIVE, AND PREPARATION METHOD THEREFOR AND USE THEREOF 审中-实审

    公开(公告)号：EP4425614A1

    公开(公告)日：2024-09-04

    申请号：EP22885770.2

    申请日：2022-10-19

    申请人： Shenzhen Innovazone Technology Co., Ltd.

    发明人： ZHONG, Zeqin ,  WAN, Yuanxin ,  KONG, Lingyong ,  ZHAO, Zhongke ,  ZHU, Chengben ,  ZHONG, Wen

    IPC分类号： H01M4/62 ,  H01M10/0525

    CPC分类号： Y02E60/10 ,  H01M4/13 ,  H01M10/0567 ,  H01M10/0525 ,  H01M4/62

    摘要： A cathode lithium-supplementing additive, a preparation method for the cathode lithium-supplementing additive and an application of the cathode lithium-supplementing additive. The cathode lithium-supplementing additive includes a lithium-containing core and an encapsulation layer covering a surface of the lithium-containing core. The encapsulation layer has pores and/or cracks and a sealing agent distributed at least at the pores and/or cracks for blocking the pores and/or cracks, where a material of the sealing agent includes an organic hydrophobic material. The sealing agent provided includes the organic hydrophobic material that can be embedded in the pores of the encapsulation material to further fill gaps in the sealing material, thus, a dense film layer is formed. The dense film layer can effectively isolate water vapor and carbon dioxide in the air, and can also prevent a reduction of metal elements in the lithium-containing core during a reaction process, which ensures a stability of the lithium-containing core, improves the lithium supplementation effect, and enables the resulting battery material to have the characteristics of high capacity and long cycle.