公开(公告)号：US20240413317A1

公开(公告)日：2024-12-12

申请号：US18808108

申请日：2024-08-19

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Tianci Yuan ,  Yao Jiang ,  Xinxin Zhang ,  Chuying Ouyang ,  Shangdong Chen ,  Lingjing Wu ,  Weibin Kang

IPC: H01M4/36 ,  C01B25/45 ,  H01M4/02 ,  H01M4/58 ,  H01M4/62

Abstract: Provided are a positive electrode active material and a preparation method thereof, a positive electrode plate, a secondary battery, a battery module, a battery pack, and an electric apparatus. The positive electrode active material includes a core and a shell layer enveloping the core, the core having a chemical formula LiaAxMn1-yByP1-zCzO4-nDn, where A includes one or more elements selected from Zn, Al, Na, K, Mg, Nb, Mo, and W, B includes one or more elements selected from Ti, V, Zr, Fe, Ni, Mg, Co, Ga, Sn, Sb, Nb, and Ge, C includes one or more elements selected from B, S, Si, and N, and D includes one or more elements selected from S, F, Cl, and Br; and the shell layer is a doped carbon layer, a doping element in the doped carbon layer including any one or more selected from nitrogen, phosphorus, sulfur, boron, and fluorine.

公开(公告)号：US20240332527A1

公开(公告)日：2024-10-03

申请号：US18740540

申请日：2024-06-12

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Tianci Yuan ,  Yao Jiang ,  Xinxin Zhang ,  Chuying Ouyang ,  Lingjing Wu ,  Shangdong Chen ,  Weibin Kang ,  Zhiqiang Wang ,  Shaojun Liu ,  Bin Deng

IPC: H01M4/58 ,  H01M4/02 ,  H01M4/04 ,  H01M4/36 ,  H01M4/583 ,  H01M10/052

CPC classification number: H01M4/5825 ,  H01M4/0471 ,  H01M4/366 ,  H01M4/583 ,  H01M10/052 ,  H01M2004/021 ,  H01M2004/028

Abstract: Provided are a positive electrode active material, a method for the preparation thereof and a positive electrode plate, a secondary battery and an electrical device. The positive electrode active material having a core-shell structure, including a core and a shell cladding the core, the core has a chemical formula of LimAxMn1-yByP1-zCzO4-nDn, the shell includes a first cladding layer cladding the core, a second cladding layer cladding the first cladding layer and a third cladding layer cladding the second cladding layer, the first cladding layer includes crystalline pyrophosphates LiaMP2O7 and/or Mb(P2O7)c, the second cladding layer includes crystalline phosphate XPO4, and the third cladding layer is carbon. The positive electrode active material of the present application enables the secondary battery and electrical device to have a relatively high energy density, and good cycling performance, rate performance and safety performance.

公开(公告)号：US20240088376A1

公开(公告)日：2024-03-14

申请号：US18515305

申请日：2023-11-21

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Zibin Liang ,  Yuhao Wang ,  Wenguang Lin ,  Xinxin Zhang ,  Jinhua He

IPC: H01M4/505 ,  C01G53/00 ,  H01M4/131 ,  H01M4/525

CPC classification number: H01M4/505 ,  C01G53/50 ,  H01M4/131 ,  H01M4/525 ,  H01M2004/028

Abstract: Provided are a layered oxide and a preparation method thereof, a positive electrode sheet, a secondary battery, a battery module, a battery pack and an electrical apparatus. The layered oxide includes an oxide with the general formula NaxMnyAaQbCcO2, where A is one or two of Fe and Ni; Q is one or more of transition metal elements containing 3d or 4d orbital electrons except Fe and Ni; C is one or two of Al and B, 0.66

公开(公告)号：US20240308871A1

公开(公告)日：2024-09-19

申请号：US18674940

申请日：2024-05-27

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Tianci Yuan ,  Yao Jiang ,  Xinxin Zhang ,  Chuying Ouyang ,  Shangdong Chen ,  Lingjing Wu ,  Weibin Kang ,  Zhiqiang Wang ,  Shaojun Liu ,  Bin Deng

IPC: C01G45/12 ,  H01M4/02 ,  H01M4/04 ,  H01M4/1391 ,  H01M4/36 ,  H01M4/58 ,  H01M4/583

CPC classification number: C01G45/1242 ,  H01M4/0471 ,  H01M4/1391 ,  H01M4/366 ,  H01M4/5825 ,  H01M4/583 ,  C01P2002/72 ,  C01P2002/85 ,  C01P2006/10 ,  H01M2004/028

Abstract: The present application provides a positive electrode active material, a method for the preparation thereof and a positive electrode plate, a secondary battery and an electrical device containing the same. The positive electrode active material having a core-shell structure, comprising a core and a shell covering the core, wherein the core has a chemical formula of LiaAxMn1-yByP1-zCzO4-nDn, the shell comprises a first cladding layer covering the core, and a second cladding layer covering the first cladding layer, wherein the first cladding layer comprises pyrophosphate MP2O7 and phosphate XPO4, and the second cladding layer comprises carbon. The positive electrode active material of the present application enables the secondary battery and electrical device to have a relatively high energy density, and good cycling performance, rate performance and safety performance.

公开(公告)号：US20240254005A1

公开(公告)日：2024-08-01

申请号：US18636290

申请日：2024-04-16

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Shaojun Liu ,  Wenwei Zhan ,  Xinxin Zhang ,  Chuying Ouyang ,  Qingzheng Li

IPC: C01G49/00

CPC classification number: C01G49/009 ,  C01P2002/72 ,  C01P2004/03 ,  C01P2004/32 ,  C01P2004/51 ,  C01P2004/61

Abstract: The present application provides a continuous reaction system, a ferromanganese phosphate precursor, a lithium iron manganese phosphate, a preparation method, and a secondary battery. A method for preparing a ferromanganese phosphate precursor provided in the present application is a continuous preparation method, thereby improving the production efficiency, and obtaining the ferromanganese phosphate precursor with small particle size, narrow particle size distribution, high crystallinity, monocrystal phase, regular appearance, high tap density, high batch stability, and high batch consistency.

公开(公告)号：US20240254003A1

公开(公告)日：2024-08-01

申请号：US18635016

申请日：2024-04-15

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Yao Jiang ,  Chuying Ouyang ,  Xinxin Zhang ,  Bin Deng ,  Bo Xu ,  Zhiqiang Wang ,  Tianci Yuan ,  Shangdong Chen

IPC: C01G45/12 ,  H01M4/02 ,  H01M4/04 ,  H01M4/36 ,  H01M4/505 ,  H01M4/58 ,  H01M4/583

CPC classification number: C01G45/1228 ,  H01M4/0471 ,  H01M4/366 ,  H01M4/505 ,  H01M4/5825 ,  H01M4/583 ,  C01P2006/10 ,  C01P2006/40 ,  H01M2004/028

Abstract: Provided are a positive electrode active material with a core-shell structure, a preparation method of positive electrode active material, a positive electrode plate, a secondary battery, a battery module, a battery pack, and an electric apparatus. The positive electrode active material includes a core containing LimAxMn1-yByP1-zCzO4-nDn, a first coating layer covering the core and containing a crystalline pyrophosphate MaP2O7 and an oxide M′bOc, and a second coating layer covering the first coating layer. The positive electrode active material in this application can reduce the generation of Li/Mn antisite defects, reduce the dissolution of manganese, and decrease the lattice change rate, increasing the capacity of the secondary battery and improving the cycling performance, high-temperature storage performance, and safety performance of the secondary battery.

公开(公告)号：US20240194867A1

公开(公告)日：2024-06-13

申请号：US18411049

申请日：2024-01-12

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Zibin Liang ,  Yuhao Wang ,  Wenguang Lin ,  Xinxin Zhang ,  Jinhua He

IPC: H01M4/505 ,  C01G53/00 ,  H01M4/02 ,  H01M4/525 ,  H01M10/054

CPC classification number: H01M4/505 ,  C01G53/50 ,  C01G53/66 ,  H01M4/525 ,  C01P2002/20 ,  C01P2002/72 ,  C01P2002/76 ,  C01P2002/78 ,  C01P2006/10 ,  C01P2006/11 ,  C01P2006/12 ,  C01P2006/40 ,  H01M2004/021 ,  H01M10/054

Abstract: The present application provides a positive electrode active material and the preparation thereof, a secondary battery, a battery module, a battery pack, and electrical device. The positive electrode active material of the present application comprises a layered sodium composite oxide containing antimony having a chemical formula of Formula I, NaxMnaFebNicSbdLeO2 (I), in which 0.7

公开(公告)号：US20240182307A1

公开(公告)日：2024-06-06

申请号：US18406219

申请日：2024-01-08

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xiaoxia Chen ,  Xinxin Zhang ,  Chuying Ouyang ,  Yongsheng Guo ,  Jiarui Tian ,  Xiaoji Zheng ,  Yu Ma ,  Ben Liu

IPC: C01B32/05 ,  H01M4/02 ,  H01M4/587

CPC classification number: C01B32/05 ,  H01M4/587 ,  C01P2002/72 ,  C01P2002/82 ,  C01P2004/03 ,  C01P2006/11 ,  C01P2006/12 ,  C01P2006/40 ,  H01M2004/027

Abstract: The present application provides a hard carbon, a method for preparing the same, a secondary battery comprising the same, and an electrical apparatus comprising the same, where an amount of generated CO2 is detected in thermal programmed desorption-mass spectrum (TPD-MS) to be less than or equal to 1.0 mmoL/g and an amount of generated CO is detected in thermal programmed desorption-mass spectrum to be less than or equal to 2.0 mmoL/g, when the hard carbon is heated from 50° C. to 1,050° C. The present application can improve both the capacity and the first coulomb efficiency of the hard carbon.

公开(公告)号：US20240162438A1

公开(公告)日：2024-05-16

申请号：US18420795

申请日：2024-01-24

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Shunli He ,  Zibin Liang ,  Yuhao Wang ,  Wenguang Lin ,  Qiang Li ,  Xinxin Zhang ,  Jinhua He

IPC: H01M4/525 ,  H01M4/02 ,  H01M4/36 ,  H01M4/505 ,  H01M4/58 ,  H01M10/052

CPC classification number: H01M4/525 ,  H01M4/366 ,  H01M4/505 ,  H01M4/582 ,  H01M10/052 ,  H01M2004/028

Abstract: An electrode active material is provided. The electrode active material includes a layered metal oxide having a general formula NaxZnaNibMncM1dO2M2e, where 0.6≤x≤0.85, 0.95≤a+b+c+d≤1.05, 0≤d≤0.05, and 0≤e≤0.067, and where 0.04≤a/c≤0.1 and 0.23≤b/c≤0.45. M1 is selected from at least one of alkaline earth metal elements, transition metal elements, and alkali metal elements other than Zn, Ni, and Mn, and M2 is selected from non-metallic elements other than O.

公开(公告)号：US11944954B2

公开(公告)日：2024-04-02

申请号：US17937457

申请日：2022-10-02

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Jiarui Tian ,  Yongsheng Guo ,  Cong Cheng ,  Xinxin Zhang ,  Na Liu ,  Chuying Ouyang

IPC: B01J20/22 ,  B01J20/28 ,  H01M50/417 ,  H01M50/446 ,  H01M50/449

CPC classification number: B01J20/226 ,  B01J20/28059 ,  B01J20/28061 ,  B01J20/2808 ,  B01J20/28083 ,  B01J20/28085 ,  H01M50/417 ,  H01M50/446 ,  H01M50/449

Abstract: An organic-inorganic hybrid porous material. The organic-inorganic hybrid porous material contains a doping element A are provided. In some embodiments, the element A is one or more selected from: Li, Na, K, Rb, Cs, Sr, Zn, Mg, Ca, or any combination thereof. An external specific surface area of the organic-inorganic hybrid porous material is 1 to 100 m2/g. A ratio of the external specific surface area to a total specific surface area of the organic-inorganic hybrid porous material is 0.7 to 0.9.