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公开(公告)号：US20240363899A1
公开(公告)日：2024-10-31
申请号：US18003122
申请日：2022-03-30
发明人： Hana RA , Tae Jin LEE , Minseo KIM , Myungheui WOO , Hyejin PARK , Bokyung RYU
IPC分类号： H01M10/0567 , C07F9/6593 , H01M4/02 , H01M4/36 , H01M4/38 , H01M4/525 , H01M4/587 , H01M10/0525 , H01M10/42
CPC分类号： H01M10/0567 , C07F9/65815 , H01M4/364 , H01M4/366 , H01M4/386 , H01M4/525 , H01M4/587 , H01M10/0525 , H01M10/4235 , H01M2004/027 , H01M2004/028 , H01M2300/0025
摘要： Provided is a rechargeable lithium battery including an electrolyte including a non-aqueous organic solvent, a lithium salt, and an additive; a positive electrode including a positive electrode active material; and a negative electrode including a negative electrode active material, wherein the additive includes at least one of the first compound and the second compound, the first compound is a substituted or unsubstituted C1 to C20 alkyl group including at least one nitrile group, a substituted or unsubstituted C2 to C20 alkenyl group including at least one nitrile group, a substituted or unsubstituted C2 to C20 alkynyl group including at least one nitrile group, a substituted or unsubstituted C1 to C20 alkoxy group including at least one nitrile group, a substituted or unsubstituted C6 to C20 aryl group including at least one nitrile group, or a combination of thereof, the second compound is cyclic phosphazene, and the positive electrode active material includes cobalt-free lithium nickel manganese-based oxide.
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公开(公告)号：US20240363853A1
公开(公告)日：2024-10-31
申请号：US18772027
申请日：2024-07-12
IPC分类号： H01M4/525 , H01M4/02 , H01M4/505 , H01M10/0525 , H01M10/44
CPC分类号： H01M4/525 , H01M4/505 , H01M10/0525 , H01M10/44 , H01M2004/021 , H01M2004/027 , H01M2004/028
摘要： A positive active material for a rechargeable lithium battery includes a first compound represented by Chemical Formula 1 and a second compound represented by Chemical Formula 2, the second compound having a smaller particle size than that of the first compound, wherein cation mixing in the surface portion of the positive active material is less than or equal to about 7.5%, cation mixing in the bulk of the positive active material is less than or equal to about 3%, a residual lithium content on the surface of the positive active material is less than or equal to about 3,000 ppm, and the first compound and the second compound each independently include 90 at % to about 98 at % of Ni with respect to the metals excluding Li.
Lia1Nix1Coy1M11-x1-y1O2, Chemical Formula 1
Lia2Nix2Coy2M21-x2-y2O2. Chemical Formula 2-
3.发明公开公开(公告)号：US20240363841A1
公开(公告)日：2024-10-31
申请号：US18682709
申请日：2022-08-24
申请人： LG Chem, Ltd.
发明人： Jun Won Lee , Jun Ho Eom , No Woo Kwak , Ji Hye Kim
CPC分类号： H01M4/366 , C01G53/50 , H01M4/483 , H01M4/525 , H01M10/4235 , C01P2002/52 , C01P2004/03 , C01P2004/50 , C01P2004/54 , C01P2004/84 , C01P2006/40 , H01M2004/028
摘要： A positive electrode active material includes a lithium transition metal oxide, which contains 70 mol % or more of nickel (Ni) among total metals excluding lithium and is in a form of a secondary particle formed by aggregation of primary particles. The lithium transition metal oxide has a coating layer containing boron (B). An average aspect ratio of the primary particles present on a surface of the lithium transition metal oxide is in a range of 1.8 to 6.0. The method of preparing the positive electrode active material is also provided. Additionally, a positive electrode and a lithium secondary battery which include the positive electrode active material are provided.
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公开(公告)号：US12132203B2
公开(公告)日：2024-10-29
申请号：US17432606
申请日：2020-02-28
申请人： LG Chem, Ltd.
发明人： Eung Ju Lee , Ji Hun Jung , Duck Gyun Mok
CPC分类号： H01M4/525 , C01G53/006 , H01M4/505 , C01P2004/03 , C01P2004/54 , C01P2004/61 , C01P2006/40 , H01M2004/021 , H01M2004/028
摘要： A positive electrode active material precursor, a method of preparing the same, a positive electrode for a secondary battery and a lithium secondary battery which include the same are disclosed herein. In some embodiments, a method of preparing a positive electrode active material precursor includes adding a transition metal aqueous solution, an ammonium ion-containing solution, and a basic aqueous solution to an initial reaction solution, and performing a co-precipitation reaction to prepare a positive electrode active material precursor having an average particle diameter (D50) of 3 μm to 5 μm, wherein the transition metal aqueous solution including a nickel raw material, a cobalt raw material, and a manganese raw material, and wherein the initial reaction solution includes a metal additive, wherein the metal additive includes at least one element selected from the group consisting of Group 5 elements and Group 6 elements.
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公开(公告)号：US20240356076A1
公开(公告)日：2024-10-24
申请号：US18756240
申请日：2024-06-27
发明人： Yezhen ZHENG , Shaoyun ZHOU
IPC分类号： H01M10/0567 , H01M4/02 , H01M4/525 , H01M10/0568
CPC分类号： H01M10/0567 , H01M4/525 , H01M10/0568 , H01M2004/021 , H01M2004/028
摘要： An electrochemical device includes a positive electrode, a negative electrode, a separator, and an electrolyte solution. The electrolyte solution includes an additive. An electrolyte retention coefficient of the electrochemical device is a g/Ah, satisfying: 0.5≤a ≤3.5. Based on a total mass of the electrolyte solution, a mass percentage of the additive is b %, satisfying: 0.005≤b>3. The additive includes at least one of lithium bis(oxalato)borate, vinyl ethylene carbonate, methylene methane disulfonate, triallyl phosphate, trifluoromethyl ethylene carbonate, or prop-1-ene-1,3-sultone. In the electrochemical device of this application, an appropriate electrolyte retention amount is maintained, and the foregoing additive is added in the electrolyte solution in an appropriate amount, thereby effectively improving the low-temperature discharge performance and safety performance of the electrochemical device. The electronic device containing the electrochemical device also exhibits good low-temperature discharge performance and safety performance.
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公开(公告)号：US20240356058A1
公开(公告)日：2024-10-24
申请号：US18039029
申请日：2022-04-13
发明人： MINGLU LI , HONGXIN YANG , FEI GAO , JING LIU
IPC分类号： H01M10/0525 , H01M4/02 , H01M4/505 , H01M4/525 , H01M4/583
CPC分类号： H01M10/0525 , H01M4/505 , H01M4/525 , H01M4/583 , H01M2004/021 , H01M2004/027 , H01M2004/028
摘要： The present disclosure provides a lithium-ion battery. The positive electrode plate and the negative electrode plate of the lithium-ion battery meet the following requirements: 0.4
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7.发明公开公开(公告)号：US20240356020A1
公开(公告)日：2024-10-24
申请号：US18638348
申请日：2024-04-17
申请人： SK ON CO., LTD.
发明人： Byoung Ki SON , Mi Jung NOH , Jae Ho CHOI , Kook Hyun HAN
IPC分类号： H01M4/525 , C01G53/00 , H01M4/02 , H01M4/131 , H01M10/052
CPC分类号： H01M4/525 , C01G53/50 , H01M4/131 , H01M10/052 , C01P2002/52 , C01P2004/50 , C01P2004/53 , C01P2004/54 , C01P2004/61 , C01P2004/62 , C01P2006/40 , H01M2004/021 , H01M2004/028
摘要： A cathode active material for a lithium secondary battery includes a first active material particle having a secondary particle structure that include first primary particles that are agglomerated or aggregated, and a second active material particle having a secondary particle structure that includes second primary particles that are agglomerated or aggregated. A particle diameter of the second active material particle is smaller than a particle diameter of the first active material particle, and an aspect ratio of the second primary particles is smaller than an aspect ratio of the first primary particles. Each of the first active material particle and the second active material particle includes a lithium-nickel-cobalt-based metal oxide, and a mass ratio of cobalt to active metals excluding lithium, nickel and cobalt in the lithium-nickel-cobalt-based metal oxide is in a range from 0.7 to 2.0.
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公开(公告)号：US20240356019A1
公开(公告)日：2024-10-24
申请号：US18580826
申请日：2022-07-15
发明人： Daizo Jito , Takeshi Ogasawara
CPC分类号： H01M4/525 , H01M4/364 , H01M4/366 , H01M4/628 , H01M2004/028
摘要： The present invention provides a positive electrode active material which is capable of improving the battery capacity. A positive electrode active material for nonaqueous electrolyte secondary batteries according to one embodiment of the present disclosure contains a first lithium transition metal composite oxide that is represented by general formula LiaNibM11-bO2 (wherein 1.5≤a≤2.5; 0.95≤b≤1.00; and M1 represents at least one element that is selected from among Cu, Sr, Ca, Nb, Si and Al); the first lithium transition metal composite oxide has voids inside; and the void fraction of the first lithium transition metal composite oxide is 2% to 10%.
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公开(公告)号：US20240356002A1
公开(公告)日：2024-10-24
申请号：US18762660
申请日：2024-07-03
申请人： SK ON CO., LTD.
发明人： Jae Ho CHOI , Jik Soo KIM , Mi Jung NOH , Hyo Shik KIL , Ji Sun LEE
CPC分类号： H01M4/0471 , H01M4/364 , H01M4/485 , H01M4/505 , H01M4/525 , H01M10/052 , H01M2004/021 , H01M2004/028
摘要： A cathode active material for a lithium secondary battery comprises lithium-nickel composite metal oxide particles, each of which has a secondary particle structure in which primary particles are aggregated. The lithium-nickel composite metal oxide particles include a first element including at least one element selected from the group consisting of B, Al, Si, Ti, V, Mn, Fe, Co, Cu, Zn, Zr, Mo and W, and a second element having an ionic radius of 80 pm or more. The second element is different from nickel and the first element. The second element is present on an outer surface of the secondary particle, at grain boundaries between the primary particles and at an inside of the primary particles.
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公开(公告)号：US20240351912A1
公开(公告)日：2024-10-24
申请号：US18683954
申请日：2022-09-12
申请人： BASF SE
CPC分类号： C01G53/42 , C01G53/04 , C01G53/40 , H01M4/525 , C01P2002/52 , C01P2006/40 , H01M2004/028
摘要： Disclosed herein is a process for making a particulate (oxy)hydroxide of TM, where TM represents metals and includes nickel and at least one metal selected from cobalt and aluminum and manganese. The process includes the steps of:
(a) combining an aqueous slurry of metallic nickel and at least one metal selected from cobalt and manganese and aluminum with an oxidant selected from nitrate and peroxide in a reaction vessel under an atmosphere with less than 100 ppm O2, thereby obtaining an aqueous reaction medium with a pH value in the range of from 7.5 to 12 containing particles,
(b) removing the particles from step (a) from the liquid by a solid-liquid separation method, and drying the particles, and
(c) returning mother liquor obtained in step (b) to the reaction vessel.
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