公开(公告)号：US20240162434A1

公开(公告)日：2024-05-16

申请号：US18398646

申请日：2023-12-28

申请人： Ningde Amperex Technology Limited

发明人： Wenyuan Liu

IPC分类号： H01M4/505 ,  H01M10/0567 ,  H01M10/44 ,  H01M4/02

CPC分类号： H01M4/505 ,  H01M10/0567 ,  H01M10/446 ,  H01M2004/021 ,  H01M2004/028

摘要： An electrochemical apparatus, including a positive electrode plate, the positive electrode plate includes a positive electrode active material. When a state of charge of the electrochemical apparatus ranges from 90% to 100%, a DSC curve of the positive electrode plate has a first exothermic peak A1 and a second exothermic peak A2 in a temperature range of 150° C. to 400° C.; where based on a mass of the positive electrode active material, the first exothermic peak A1 is an exothermic peak closest to 400° C. with a peak intensity greater than 0.1 mW/mg, the second exothermic peak A2 is an exothermic peak closest to 150° C. with a peak intensity greater than 0.1 mW/mg, a difference between a peak position Ta of the first exothermic peak A1 and a peak position Tb of the second exothermic peak A2 ranges from 20° C. to 150° C. The electrochemical apparatus has good cycling, rate, and safety performances.

公开(公告)号：US20240162425A1

公开(公告)日：2024-05-16

申请号：US18548868

申请日：2022-02-22

申请人： BTR Nano Tech Co., Ltd. ,  Panasonic Energy Co., Ltd.

发明人： Youyuan HUANG ,  Shunyi YANG ,  Xiong SONG ,  Hongxu ZHANG ,  Wuwei YAN ,  Liang LUO ,  Shun NOMURA ,  Koki MORITA ,  Takuya SHINOMIYA

IPC分类号： H01M4/36 ,  C01G53/00 ,  H01M4/131 ,  H01M4/505 ,  H01M4/525 ,  H01M4/58 ,  H01M10/0525 ,  H01M4/02

CPC分类号： H01M4/366 ,  C01G53/42 ,  C01G53/50 ,  H01M4/131 ,  H01M4/505 ,  H01M4/525 ,  H01M4/5825 ,  H01M10/0525 ,  C01P2002/54 ,  C01P2004/03 ,  C01P2004/61 ,  C01P2004/62 ,  C01P2004/80 ,  C01P2006/40 ,  H01M2004/028

摘要： A cathode material and a method for preparing the same, lithium ion battery provided. The cathode material includes secondary particle which includes a plurality of primary particles, where the primary particle includes an active material having a chemical formula LibNixCoyMzRwO2, where 0.95≤b≤1.10, 0.8≤x

公开(公告)号：US20240162420A1

公开(公告)日：2024-05-16

申请号：US18280968

申请日：2022-03-22

申请人： Svolt Energy Technology Co., Ltd.

发明人： Hailong Pan ,  Zitan Li ,  Hongxin Yang

IPC分类号： H01M4/36 ,  C01G53/00 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525

CPC分类号： H01M4/366 ,  C01G53/50 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  C01P2002/72 ,  C01P2004/84 ,  C01P2006/40

摘要： Provided is a preparation method for a layered cobalt-free positive electrode material, the method comprising the steps: (1) mixing a lithium salt, a nickel source, a manganese source, a dopant and a solvent, and subjecting same to wet ball milling to obtain a mixed slurry; (2) spray drying the mixed slurry to obtain a precursor; and (3) carrying out one instance of calcination on the precursor in an oxygen-containing atmosphere to obtain the layered cobalt-free positive electrode material. Further provided are a layered cobalt-free positive electrode material, which is obtained by the preparation method, and a lithium-ion battery containing the layered cobalt-free positive electrode material. In the preparation method, an expensive cobalt element is replaced with a specific type of doping element, and wet ball milling and spray drying processes are used cooperatively, such that not only bulk phase doping can be realized, but also, a c-axis increases, layering is more obvious, and lithium-nickel mixing is reduced when crystals are formed in the material, thereby improving the stability of the material, and excellent electrochemical performance is obtained.

公开(公告)号：US11984616B2

公开(公告)日：2024-05-14

申请号：US17258324

申请日：2020-05-11

申请人： LG CHEM, LTD.

发明人： Hyunwoong Yun ,  Youngdeok Kim ,  Hoejin Hah

IPC分类号： H01M50/417 ,  H01M4/02 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/0569

CPC分类号： H01M50/417 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/0569 ,  H01M2004/028 ,  H01M2300/0037

摘要： A lithium secondary battery exhibiting excellent life characteristic and stability is discussed, in which side reactions of an electrolyte are minimized, and non-uniform growth of lithium dendrite is effectively inhibited.

公开(公告)号：US11984598B2

公开(公告)日：2024-05-14

申请号：US18338781

申请日：2023-06-21

申请人： SAINT-GOBAIN CERAMICS & PLASTICS, INC.

发明人： Ruofan Wang ,  Yuto Takagi ,  Michael McGahan ,  Vladimir Ouspenski ,  Gaurav Assat ,  Chuanping Li

IPC分类号： H01M4/36 ,  H01M4/505 ,  H01M4/60 ,  H01M4/62 ,  H01M10/0525 ,  H01M10/0565 ,  H01M4/02

CPC分类号： H01M4/60 ,  H01M4/366 ,  H01M4/505 ,  H01M4/623 ,  H01M10/0525 ,  H01M10/0565 ,  H01M2004/021 ,  H01M2300/0082 ,  H01M2300/0085

摘要： An ion conductive layer can include a hygroscopic ion conductive material, such as a halide-based material. In an embodiment, the ion conductive layer can include an organic material, ammonium halide, or a combination thereof.

公开(公告)号：US11984588B2

公开(公告)日：2024-05-14

申请号：US17007660

申请日：2020-08-31

申请人： KABUSHIKI KAISHA TOSHIBA

发明人： Tetsuya Sasakawa ,  Yasuhiro Harada ,  Norio Takami

IPC分类号： H01M4/505 ,  B60L7/10 ,  B60L50/64 ,  H01M4/131 ,  H01M4/134 ,  H01M4/36 ,  H01M4/46 ,  H01M4/525 ,  H01M4/62 ,  H01M10/0525 ,  H01M10/42 ,  H01M50/204 ,  H01M50/296 ,  H01M50/509 ,  H01M4/02

CPC分类号： H01M4/505 ,  B60L7/10 ,  B60L50/64 ,  H01M4/131 ,  H01M4/134 ,  H01M4/364 ,  H01M4/366 ,  H01M4/46 ,  H01M4/525 ,  H01M4/623 ,  H01M10/0525 ,  H01M10/4257 ,  H01M50/204 ,  H01M50/296 ,  H01M50/509 ,  B60Y2200/91 ,  B60Y2400/112 ,  H01M2004/027 ,  H01M2004/028 ,  H01M2010/4271 ,  H01M2220/20

摘要： According to one embodiment, there is provided an active material represented by a general formula Lix(NiaCobMncMd)1−s(Nb1−t−uTatM′u)sO2. Here, M is at least one selected from the group consisting of Li, Ca, Mg, Al, Ti, V, Cr, Zr, Mo, Hf, and W, M′ is at least one selected from the group consisting of K, P, Fe, Si, Na, Cu and Zn, and 1.0≤x≤1.3, 0≤a≤0.9, 0≤b≤1.0, 0≤c≤0.8, 0≤d≤0.5, a+b+c+d=1, 0.005≤s≤0.3, 0.0005≤t≤0.1, and 0≤u≤0.3 are satisfied.

公开(公告)号：US11984586B1

公开(公告)日：2024-05-14

申请号：US18400312

申请日：2023-12-29

申请人： Beijing Easpring Material Technology Co., Ltd.

发明人： Bohao Zhang ,  Yafei Liu ,  Yanbin Chen

IPC分类号： H01M4/36 ,  H01M4/04 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M4/02

CPC分类号： H01M4/366 ,  H01M4/0471 ,  H01M4/505 ,  H01M4/525 ,  H01M2004/021 ,  H01M2004/028 ,  H01M10/0525

摘要： Disclosed are a surface-coated positive electrode material and a preparation method therefor, and a lithium ion battery. The surface-coated cathode material contains a substrate and a coating layer coated on a surface of the substrate, and the coating layer has a bimodal distribution of characteristic peaks at 31°-35° of 2θ tested by X-Ray Diffraction (XRD); and a ratio Ib/Ia of a peak intensity Ib of a secondary peak to a peak intensity Ia of a primary peak in a bimodal distribution is within a range of 0.8-1, preferably within a range of 0.97-1.

公开(公告)号：US11984583B2

公开(公告)日：2024-05-14

申请号：US17190770

申请日：2021-03-03

申请人： Samsung SDI Co., Ltd.

发明人： Taeri Kwon

IPC分类号： H01M4/36 ,  C01G53/00 ,  H01M4/02 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525 ,  H01M4/62 ,  H01M10/0525 ,  H01M10/0562

CPC分类号： H01M4/366 ,  C01G53/42 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525 ,  H01M4/62 ,  H01M10/0525 ,  H01M10/0562 ,  C01P2002/52 ,  C01P2002/85 ,  C01P2004/84 ,  C01P2006/40 ,  H01M2004/021 ,  H01M2004/028 ,  H01M2300/0068

摘要： A positive electrode for an all-solid secondary battery includes a positive active material and a sulfide-based solid electrolyte, wherein the positive active material has a structure containing a core and a shell, the shell includes a nickel-based active material containing cobalt at an amount of about 30 mol % or higher, a surface of the positive active material includes a coating layer including at least one lithium ion conductor selected from a lanthanum oxide and a lithium lanthanum oxide, and an amount of the lithium ion conductor is in a range of about 0.1 parts to about 10 parts by weight based on 100 parts by weight of the total weight of the positive active material and the lithium ion conductor.

公开(公告)号：US20240154174A1

公开(公告)日：2024-05-09

申请号：US18464061

申请日：2023-09-08

申请人： SAMSUNG SDI CO., LTD.

发明人： Hyunbong CHOI ,  Sundae KIM ,  Sangwoo PARK ,  Dahyun KIM ,  Yeji YANG ,  Hongryeol PARK ,  Sanghoon KIM

IPC分类号： H01M10/0569 ,  H01M4/38 ,  H01M4/505 ,  H01M10/0567

CPC分类号： H01M10/0569 ,  H01M4/386 ,  H01M4/505 ,  H01M10/0567 ,  H01M2004/028

摘要： A rechargeable lithium battery includes an electrolyte solution including a non- aqueous organic solvent and a lithium salt; a positive electrode including a positive electrode active material; and a negative electrode including a negative electrode active material, where the non-aqueous organic solvent includes less than about 5 wt % of ethylene carbonate, based on the total weight of the non-aqueous organic solvent, and the positive electrode active material includes a cobalt-free lithium nickel manganese-based oxide.

公开(公告)号：US20240145781A1

公开(公告)日：2024-05-02

申请号：US17976400

申请日：2022-10-28

申请人： GM GLOBAL TECHNOLOGY OPERATIONS LLC

发明人： Lei WANG ,  Shubha NAGESWARAN ,  Gongshin QI

IPC分类号： H01M10/0569 ,  H01M4/505 ,  H01M4/525 ,  H01M4/62 ,  H01M10/0525 ,  H01M10/0567

CPC分类号： H01M10/0569 ,  H01M4/505 ,  H01M4/525 ,  H01M4/62 ,  H01M10/0525 ,  H01M10/0567 ,  H01M2004/028 ,  H01M2300/004

摘要： An electrode for an electrochemical cell includes an electroactive material and an electrolyte. The electroactive material is represented by:


xLi2MnO3·(1−x)LiMO2

where M is a transition metal selected from the group consisting of: nickel (Ni), manganese (Mn), cobalt (Co), aluminum (Al), iron (Fe), and combinations thereof and 0.01≤x≤0.99. The electrolyte includes a solvent system that includes a solvent and greater than or equal to about 1 vol. % to less than or equal to about 90 vol. % of a diluent. The diluent includes tetrafluoropropyl ether (TTE), 2,2,2-trifluoroethanol (TFE), or a combination of tetrafluoropropyl ether (TTE) and 2,2,2-trifluoroethanol (TFE).