复合石墨材料及其制备方法、负极极片、二次电池、电池模块、电池包及用电装置

    公开(公告)号:WO2023040319A1

    公开(公告)日:2023-03-23

    申请号:PCT/CN2022/093671

    申请日:2022-05-18

    Inventor: 康蒙 何立兵

    Abstract: 本申请公开了一种复合石墨材料及其制备方法、负极极片、二次电池、电池模块、电池包及用电装置。所述复合石墨材料包括本体颗粒以及位于本体颗粒至少一部分表面上的包覆层,所述本体颗粒为两个以上一次颗粒聚集而成的二次颗粒,所述本体颗粒包括人造石墨,所述包覆层包括无定形碳,所述复合石墨材料的空气氧化温度T 0为630℃~730℃。本申请的复合石墨材料能使二次电池具有高能量密度的前提下,还具有大幅提升的快速充电性能和低温功率性能。

    METHODS FOR PREPARING NANO-ORDERED CARBON PRODUCTS FROM REFINERY HYDROCARBON STREAMS

    公开(公告)号:WO2023018542A1

    公开(公告)日:2023-02-16

    申请号:PCT/US2022/038344

    申请日:2022-07-26

    Abstract: Embodiments of the present disclosure generally relate to methods for preparing carbon materials which can be used in battery electrodes. More specifically, embodiments relate to methods for preparing nano-ordered carbon products used as anode materials in metal-ion batteries, such as a sodium-ion battery. In one or more embodiments, a method for preparing a nano-ordered carbon is provided and includes exposing a liquid refinery hydrocarbon product to a first functionalization agent to produce a first solid functionalized product during a first functionalization process and purifying the first solid functionalized product during a purification process. The method also includes exposing the first solid functionalized product to a second functionalization agent to produce a second solid functionalized product during a second functionalization process and carbonizing the second solid functionalized product to produce a solid nano-ordered carbon product during a carbonization process.

    一种高首效高倍率硅基负极材料及其制备方法

    公开(公告)号:WO2022257311A1

    公开(公告)日:2022-12-15

    申请号:PCT/CN2021/123440

    申请日:2021-10-13

    Abstract: 本发明涉及锂离子电池技术领域,针对现有技术中硅氧材料首效低、电导率不佳及膨胀较大的问题,公开了一种高首效高倍率硅基负极材料及其制备方法,硅基负极材料为高首效SiO/C材料、石墨及硬碳分布于无定型碳中形成的复合结构;硅基负极材料中高首效SiO/C材料、石墨、硬碳和无定型碳源的质量比为1:1~10:1~5:0.1~0.3。对氧化亚硅材料进行液相预锂化处理,将高首效硅氧材料固定在石墨颗粒和硬碳颗粒之间,通过碳基材料的锚定作用缓解硅基材料的体积膨胀,起锚定作用的无定型碳同时在高首效硅氧材料、石墨及硬碳表现形成了一层碳包覆层,最终制得的硅基复合材料具有高首效高倍率长循环寿命的特点,综合性能优异。

    负极材料及包含其的电化学装置和电子设备

    公开(公告)号:WO2022205658A1

    公开(公告)日:2022-10-06

    申请号:PCT/CN2021/104653

    申请日:2021-07-06

    Inventor: 金文博 董佳丽

    Abstract: 一种负极材料,所述负极材料包含碳质活性材料,通过观察SEM图像,在80μm×100μm区域,所述碳质活性材料包括具有孔的碳质颗粒;所述负极材料满足以下条件(A)或(B):(A)所述孔的长度最长的方向为孔的最大直径Y,单个碳质颗粒孔最大直径Y的范围满足0.3μm≤Y≤2.0μm,且碳质颗粒的孔最大直径平均值X满足0.6μm≤X≤1.5μm;(B)包含孔数量N≤2的碳质颗粒的数量占所述区域碳质颗粒总数量的比例为≤60%,包含孔数量3≤N≤5的碳质颗粒的数量占所述区域碳质颗粒总数量的比例为≤30%;包括该负极材料的电化学装置。

    POLYMERIC-INORGANIC HYBRID LAYER FOR A LITHIUM ANODE

    公开(公告)号:WO2022177787A1

    公开(公告)日:2022-08-25

    申请号:PCT/US2022/015773

    申请日:2022-02-09

    Applicant: LYTEN, INC.

    Abstract: A lithium-sulfur battery including an anode structure, a cathode, a separator, and an electrolyte is provided. The electrolyte may be dispersed throughout the cathode and in contact with the anode. An artificial solid-electrolyte interphase (A-SEI) may form on the anode, and a protective layer (e.g., that may be pinhole free) may form within and/or on the A-SEI to face the cathode. The protective layer may be formed from carbonaceous materials, which may provide exposed carbon atoms grafted with one or more ions, such as fluorine anions (F-), uniformly dispersed throughout the protective layer. In addition, the protective layer may include polymeric chains positioned generally opposite to each other. The polymeric chains may cross-link upon exposure to ultraviolet (UV) energetic radiation to form a three-dimensional (3D) lattice having a defined cross-linking density suitable to trap one or more anions during discharge-charge operational cycling of the lithium-sulfur battery.

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