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公开(公告)号：US20240322142A1
公开(公告)日：2024-09-26
申请号：US18736563
申请日：2024-06-07
发明人： Limei Zhang , Peipei Chen , Yao Jiang , Jiao Liu
IPC分类号： H01M4/36 , H01M4/02 , H01M4/58 , H01M4/587 , H01M10/0525 , H01M10/0567 , H01M10/0569 , H01M10/42
CPC分类号： H01M4/366 , H01M4/5825 , H01M4/587 , H01M10/0525 , H01M10/0567 , H01M10/0569 , H01M10/4235 , H01M2004/028 , H01M2220/20 , H01M2300/0037
摘要： Provided are a secondary battery, a battery module, a battery pack and an electrical apparatus. The secondary battery includes a positive electrode plate and a non-aqueous electrolyte solution. A positive electrode active material includes an inner core and a shell cladding the inner core. The inner core includes Li1+xMn1−yAyP1−zRzO4. The shell includes a first cladding layer cladding the inner core and a second cladding layer cladding the first cladding layer. The first cladding layer includes pyrophosphate MP2O7 and phosphate XPO4. The second cladding layer includes carbon. The non-aqueous electrolyte solution includes a first additive. The first additive includes one or more compounds in a group consisting of a compound shown in Formula 1, a compound shown in Formula 2 and a compound shown in Formula 3. The rate performance, cycling performance and high temperature stability of a lithium manganese phosphate secondary battery are increased.
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82.发明公开公开(公告)号：US20240322132A1
公开(公告)日：2024-09-26
申请号：US18579181
申请日：2022-07-08
CPC分类号： H01M4/366 , H01M4/5815 , H01M4/583 , H01M10/05 , H01M2004/027 , H01M2004/028
摘要： Disclosed herein is a nanoparticulate material, that includes a carbon nanomaterial having a first surface, a second surface and one or more edges; and sulfur on the first and second surfaces and the one or more edges of the carbon nanomaterial, where the sulfur forms from 50 wt. % to 99 wt. % of the composition when measured using one or both of CHNS elemental analysis and thermogravimetric analysis. Also disclosed herein are batteries using said material.
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公开(公告)号：US12100834B2
公开(公告)日：2024-09-24
申请号：US18616052
申请日：2024-03-25
发明人： Qingyan Ma , Yingjie Guan , Yuzhen Zhao , Yan Wen , Qisen Huang
CPC分类号： H01M4/366 , C01B25/45 , C01B33/32 , H01M4/1315 , H01M4/137 , H01M4/505 , H01M4/604 , H01M4/608 , C01P2002/52 , C01P2002/72 , C01P2002/85 , C01P2006/40 , H01M2004/028
摘要： A positive electrode active material, a method for preparation thereof and a positive electrode plate, a secondary battery and an electrical device containing the same are provided. The positive electrode active material has a core-shell structure, comprising a core, a first cladding layer covering the core, a second cladding layer covering the first cladding layer, wherein the core has a chemical formula of LiaAxMn1-yByP1-zCzO4-nDn, the first cladding layer comprises a first polymer containing an electron withdrawing group, the second cladding layer comprises a second polymer, and wherein the second polymer comprises one or more of plant polysaccharides, marine polysaccharides and the derivatives thereof. The positive electrode active material of the present application enables a secondary battery to have a relatively high energy density, while further having a significantly improved rate performance, cycling performance and/or high-temperature stability.
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公开(公告)号：US12100830B2
公开(公告)日：2024-09-24
申请号：US17277809
申请日：2018-09-28
发明人： Wei Lu , Weihong Li , Chaoyang Chen , Liwei Chen , Shaojie Han
IPC分类号： H01M4/131 , H01M4/1391 , H01M4/62 , H01M10/0525 , H01M4/02
CPC分类号： H01M4/131 , H01M4/1391 , H01M4/623 , H01M10/0525 , H01M2004/021 , H01M2004/028
摘要： A cathode additive, comprising, in percentage by mass, 10% to 40% of carbon-coated lithium manganese iron phosphate and an organic solvent. The carbon-coated lithium manganese iron phosphate is dispersed in the organic solvent, and the median particle diameter of the carbon-coated lithium manganese iron phosphate is 30 nm to 100 nm.
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85.发明公开公开(公告)号：US20240313224A1
公开(公告)日：2024-09-19
申请号：US18617506
申请日：2024-03-26
发明人： Junguang CHEN , Cong CHENG , Haile PEI , Shengwu ZHANG , Xinghui WANG , Shisong LI
CPC分类号： H01M4/622 , H01M2004/021 , H01M2004/028
摘要： An electrode assembly includes a water-based positive electrode plate and a negative electrode plate, wherein the water-based positive electrode plate includes a positive electrode current collector and a positive electrode film layer located on at least one surface of the positive electrode current collector; and the negative electrode plate comprises a negative electrode current collector and a negative electrode film layer located on at least one surface of the negative electrode current collector; at least part of surface of the water-based positive electrode plate is provided with a plurality of first micropores, and satisfies: 0.001%≤(S12×H12×D1)/(S11×C1×H11)≤1%, at least part of surface of the negative electrode plate is provided with a plurality of second micropores, and satisfies: 0
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公开(公告)号：US20240313218A1
公开(公告)日：2024-09-19
申请号：US18676896
申请日：2024-05-29
发明人： Xiaolang LIU
CPC分类号： H01M4/525 , C01G51/42 , C01G51/50 , C01G53/50 , H01M4/131 , C01P2002/52 , C01P2002/72 , C01P2002/76 , C01P2002/85 , C01P2006/40 , H01M2004/028
摘要： A positive electrode active material includes lithium-containing cobalt oxide particles. The lithium-containing cobalt oxide particles include an Mn element and an Ni element. On the basis that the molar content of metal elements except a lithium element in the lithium-containing cobalt oxide particles is 100%, the content of the Mn element is A %, and the content of the Ni element is B %, where 0.1≤A+B
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87.发明公开公开(公告)号：US20240313194A1
公开(公告)日：2024-09-19
申请号：US18670628
申请日：2024-05-21
发明人： Yang-Kook SUN , HUN KIM
CPC分类号： H01M4/1397 , H01M4/04 , H01M4/136 , H01M4/5815 , H01M4/622 , H01M4/625 , H01M2004/021 , H01M2004/028
摘要： This invention pertains to a positive electrode for lithium-sulfur batteries, comprising a positive electrode active material and a binder. The positive electrode active material includes a sulfur-containing material, graphene, and carbon nanotubes (CNT). The carbon nanotubes are first mixed with the graphene to create a network structure, after which the sulfur-containing material is added so that it is embedded within the network structure. This arrangement facilitates the integration of the sulfur-containing material into the network, thereby forming a positive electrode for lithium-sulfur batteries.
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公开(公告)号：US12095118B2
公开(公告)日：2024-09-17
申请号：US17171509
申请日：2021-02-09
发明人： Takaaki Matsui , Kazuki Honda , Rikako Imoto , Hideki Nakai , Takashi Sato
IPC分类号： H01M50/538 , H01M4/02 , H01M4/133 , H01M4/134 , H01M4/38 , H01M4/66 , H01M10/0525
CPC分类号： H01M50/538 , H01M4/133 , H01M4/134 , H01M4/386 , H01M4/661 , H01M10/0525 , H01M2004/027 , H01M2004/028 , H01M2220/20
摘要： A secondary battery includes a wound electrode body. The wound electrode body includes a positive electrode, a negative electrode, and a separator. The positive electrode and the negative electrode are stacked on each other with the separator interposed therebetween and are wound about a winding axis. The wound electrode body has a section perpendicular to the winding axis. The section has an elongated shape that includes a flat part and a pair of curved parts. The curved parts oppose each other with the flat part interposed therebetween. The negative electrode includes a negative electrode current collector and a negative electrode active material layer provided on the negative electrode current collector. A width of the wound electrode body, a wound-layer number of the wound electrode body, and a ratio of a second distance to a first distance satisfy at least one of Condition A and Condition B.
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公开(公告)号：US12095095B2
公开(公告)日：2024-09-17
申请号：US17399365
申请日：2021-08-11
申请人： Enevate Corporation
IPC分类号： H01M4/62 , H01M4/02 , H01M4/04 , H01M4/134 , H01M4/1395 , H01M4/38 , H01M10/0525
CPC分类号： H01M4/628 , H01M4/0404 , H01M4/0471 , H01M4/134 , H01M4/1395 , H01M4/386 , H01M10/0525 , H01M2004/027
摘要： Systems and methods are provided for a reaction barrier between an electrode active material and a current collector. An electrode may comprise an active material, a metal foil, and a polymer. The polymer (such as polyamide-imide (PAI)) may be configured to provide a carbonized barrier between the active material and the metal foil after pyrolysis.
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公开(公告)号：US12095088B2
公开(公告)日：2024-09-17
申请号：US17505810
申请日：2021-10-20
发明人： Zhen-Han Fang , Jia-Ping Wang , Shou-Shan Fan
IPC分类号： H01M4/583 , H01M4/02 , H01M4/04 , H01M4/36 , H01M4/505 , H01M4/525 , H01M10/04 , H01M10/0525
CPC分类号： H01M4/583 , H01M4/0419 , H01M4/364 , H01M4/505 , H01M4/525 , H01M10/0404 , H01M10/0525 , H01M2004/027 , H01M2004/028
摘要： A method of preparing a lithium-ion battery electrode, S1, preparing a carbon nanotube raw material; S2, providing an electrode active material and a solvent; S3, mixing the carbon nanotube raw material and the electrode active material with the solvent to form a mixture, and stirring the mixture to form an electrode mixture; and S4, spraying the electrode mixture on a substrate to form an electrode layer, and removing the substrate and drying the electrode layer to form the lithium-ion battery electrode.
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