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公开(公告)号:WO2023071393A1
公开(公告)日:2023-05-04
申请号:PCT/CN2022/111806
申请日:2022-08-11
Applicant: 广东邦普循环科技有限公司 , 湖南邦普循环科技有限公司 , 湖南邦普汽车循环有限公司
Abstract: 本发明公开了一种具有开口的空心球形颗粒负极材料及其制备方法和应用,材料的外观为具有开口的空心球形或类球形颗粒,颗粒的粒径为1nm-5μm,所述负极材料由金属氧化物和碳组成,所述金属氧化物为锡、锗、钛、锑、铁、钴、镍或铜中的至少一种氧化物。本发明将制备得到的具有开口的空心球形金属氧化物进行碳化处理,使颗粒内部及外部形成支撑性的碳骨架结构,从而提升颗粒强度和导电性,由于颗粒具有开口的空心结构,在与碳源混合水热反应时,碳源可进入颗粒内部,极大的提升了材料的强度,颗粒中空,进一步提升了材料的比表面积,更加利于锂/钠离子的脱嵌,作为负极材料使用时,可进一步提升循环性能和比容量。
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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
Applicant: 宁德时代新能源科技股份有限公司
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。
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公开(公告)号:WO2023023894A1
公开(公告)日:2023-03-02
申请号:PCT/CN2021/114071
申请日:2021-08-23
Applicant: 宁德时代新能源科技股份有限公司
Abstract: 本申请提供一种碳包覆的磷酸铁锂正极活性材料。通过对碳包覆的磷酸铁锂材料的表层中不同微观形态的碳结构比表面积相对占比的调控,得到了本申请的碳包覆的磷酸铁锂正极活性材料。本申请的碳包覆的磷酸铁锂正极活性材料具有碳包覆因子η,并且所述η满足0.81≤η≤0.95时,磷酸铁锂正极活性材料具有高质量的碳包覆,有利于磷酸铁锂正极活性材料容量发挥、显著改善极片脱水效率,制备而成的锂离子电池兼具优良的能量密度、循环性能以及优良加工性能。
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公开(公告)号:WO2023019275A2
公开(公告)日:2023-02-16
申请号:PCT/US2022/074958
申请日:2022-08-15
Applicant: GLOBAL GRAPHENE GROUP, INC.
Inventor: ZHAMU, Aruna , HE, Hui , JANG, Bor Z.
Abstract: The disclosure provides a multi-layer prelithiated anode including (a) a conducting substrate having a first primary surface and a second primary surface; (b) a first layer of lithium metal deposited onto the first primary surface of the conducting substrate; (c) a first graphitic layer that substantially covers the first lithium metal layer; and (d) a first anode active layer deposited on a primary surface of the first graphitic layer. The first anode active layer includes an anode active material. Also provided are a lithium battery including such a prelithiated anode and a method of producing such an anode.
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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
Applicant: PHILLIPS 66 COMPANY
Inventor: ZHANG, Liang , LAFRANCOIS, Christopher, J. , NYADONG, Leonard , LAI, Jinfeng , ENTERKIN, James, A. , ALVEY, Paul, M.
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.
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公开(公告)号:WO2023280798A1
公开(公告)日:2023-01-12
申请号:PCT/EP2022/068498
申请日:2022-07-05
Applicant: RHODIA OPERATIONS
Inventor: BRAIDA, Marc-David , LECLERCQ, Florent
IPC: H01M4/58 , H01M4/583 , H01M10/04 , H01M4/133 , H01M4/136 , H01M10/054 , H01M10/24 , H01M10/42 , H01M4/62
Abstract: Inorganic additive to trap transition metal ions in sodium ion batteries The present invention relates to a sodium ion battery comprising an inorganic transition metal cations trap such as hydroxyapatite. It also relates to a positive electrode, a negative electrode, an electrolyte and a separator comprising said inorganic transition metal cations trap.
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公开(公告)号:WO2022257372A1
公开(公告)日:2022-12-15
申请号:PCT/CN2021/133965
申请日:2021-11-29
Applicant: 国家能源投资集团有限责任公司 , 北京低碳清洁能源研究院
IPC: H01M4/583 , H01M10/0525
Abstract: 本发明涉及碳材料领域,公开了一种石墨负极材料及其制备方法和应用。所述石墨负极材料通过XRD获得的c轴方向的微晶尺寸Lc和a轴方向的微晶尺寸La满足以下条件: 30nm≤Lc≤70nm式(I);50nm≤La≤120nm式(II);所述石墨负极材料的石墨化度满足以下条件:85≤石墨化度≤93式(III)。该石墨负极材料具有高的充放电容量、高的首次库伦效率和优异的倍率性能,并且其制备方法工艺简单、成本低。
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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
Applicant: 万向一二三股份公司
IPC: H01M4/48 , H01M4/583 , H01M10/0525
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。
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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
Applicant: 宁德新能源科技有限公司
IPC: H01M4/583 , C01B32/205
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。
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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.
Inventor: LI, You , BAUCOM, Jesse , ROGOJINA, Elena , KC, Chandra B. , SHAN, Jingning , GAZDA, Jerzy , BUGGA, Ratnakumar
IPC: H01M4/38 , H01M4/58 , H01M10/0562 , H01M10/0565 , H01M4/583 , H01M4/62
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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