公开(公告)号：US11721838B2

公开(公告)日：2023-08-08

申请号：US17217211

申请日：2021-03-30

申请人： Ningde Amperex Technology Limited

发明人： Jian Liu ,  Wenqiang Li ,  Jianming Zheng ,  Xiexue Peng

IPC分类号： H01M10/0567 ,  H01M10/0569 ,  H01M10/0568 ,  H01M10/0525 ,  H01M4/525 ,  C07F5/02 ,  C07C261/02 ,  C07C255/04 ,  C07C255/03 ,  C07C255/05 ,  C07C317/28 ,  H01M4/02

CPC分类号： H01M10/0567 ,  C07C255/03 ,  C07C255/04 ,  C07C255/05 ,  C07C261/02 ,  C07C317/28 ,  C07F5/027 ,  H01M4/525 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/0569 ,  H01M2004/028 ,  H01M2300/004

摘要： An electrolyte including an additive of compound of formula I,






wherein n is an integer ranging from 0 to 10;
R1 and R2 are each independently selected from a substituted or unsubstituted C1-C10 alkylidene group, a substituted or unsubstituted C2-C10 alkenylene group, or a substituted or unsubstituted C1-C10 alkyleneoxy group; A1 selected from CH, C, N, S, O, B or Si; A2 is selected from CH—R3, N—R3, S, O, B—R3 or SiH—R3; A3 selected from CH2, CH, C, N, S, O, B or Si; R3 is selected from hydrogen, halogen, a substituted or unsubstituted C1-C10 alkyl group, or a substituted or unsubstituted C3-C10 cycloalkyl group; X1 is selected from a substituted or unsubstituted C1-C10 alkylidene group, a substituted or unsubstituted C2-C10 alkenylene group, ═Rc═, or ═Rc—, wherein Rc is selected from a substituted or unsubstituted C2-C6 alkylidene group.

公开(公告)号：US11387491B2

公开(公告)日：2022-07-12

申请号：US16162379

申请日：2018-10-16

申请人： Ningde Amperex Technology Limited

发明人： Shuirong Zhang ,  Chao Tang ,  Wenqiang Li

IPC分类号： H01M10/0569 ,  H01M10/0525

摘要： The present application provides an electrolyte and a secondary battery comprising the same. The electrolyte is prepared by adding a siloxane compound, a nitrile compound and an electrolyte salt with different contents into an organic solvent.

公开(公告)号：US20220123363A1

公开(公告)日：2022-04-21

申请号：US17362730

申请日：2021-06-29

申请人： Ningde Amperex Technology Limited

发明人： Wenqiang Li ,  Juan Ma ,  Chao Tang ,  Junfei Liu

IPC分类号： H01M10/0567 ,  H01M10/0525

摘要： An electrolytic solution includes a compound containing a —CN functional group and a compound containing a silicon functional group. M is C or Si. R11, R12, and R13 are each independently selected from a substituted or non-substituted C1-C12 alkylene group, a substituted or non-substituted C2-C12 alkenylene group, an O—R group, an R0—S—R group or an R0—O—R group, R0 and R are each independently selected from a substituted or non-substituted C1-C6 alkylene group. n is 0 or 1. R14 is H, fluorine, a cyano group, a substituted or non-substituted C1-C12 alkyl group, a substituted or non-substituted C2-C12 alkenyl group, an O—R1 group, an R0—S—R1 group, or an R0—O—R1 group. R0 is a substituted or non-substituted C1-C6 alkylene group, and R1 is a substituted or non-substituted C1-C6 alkyl group.

公开(公告)号：US11165097B2

公开(公告)日：2021-11-02

申请号：US16454904

申请日：2019-06-27

申请人： NINGDE AMPEREX TECHNOLOGY LIMITED

发明人： Chunrui Xu ,  Wenqiang Li ,  Chao Tang ,  Shuirong Zhang

IPC分类号： H01M10/0564 ,  H01M10/0525 ,  C01B25/30 ,  C07D327/02 ,  C07D327/10 ,  C07F7/18 ,  H01M4/62

摘要： The present application relates to an electrolyte, an electrochemical device and an electronic device comprising the same. The electrolyte of the present application includes a cyclic N-containing sulfonyl-compound and at least one of vinylene carbonate, fluoroethylene carbonate, lithium tetrafluoroborate, lithium difluoro(oxalato)borate or lithium difluorophosphate. The electrolyte of the present application may further include a sulfur-oxygen double bond containing compound and a silicon-containing carbonate. Compared with the prior art, using the electrolyte provided by the present application can effectively improve the high-temperature storage, cycle performance and overcharge performance of an electrochemical device, such as a lithium-ion battery.

公开(公告)号：US12095035B2

公开(公告)日：2024-09-17

申请号：US17059701

申请日：2020-01-20

申请人： NINGDE AMPEREX TECHNOLOGY LIMITED

发明人： Wenqiang Li ,  Jian Liu ,  Mingming Guan ,  Jianming Zheng

IPC分类号： H01M10/0567 ,  H01M4/485 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/0569 ,  C07D327/10 ,  C07D411/04 ,  C07D411/14 ,  C07D497/04

CPC分类号： H01M10/0567 ,  H01M4/485 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/0569 ,  C07D327/10 ,  C07D411/04 ,  C07D411/14 ,  C07D497/04 ,  H01M2300/0034 ,  H01M2300/0037 ,  H01M2300/004

摘要： An electrolytic solution includes the compound of Formula I and a carboxylate compound:




The electrochemical device prepared with the electrolytic solution has reduced storage impedance, and improved post-storage swelling, overcharge performance and hot box performance.

公开(公告)号：US11735771B2

公开(公告)日：2023-08-22

申请号：US16652468

申请日：2020-01-20

申请人： NINGDE AMPEREX TECHNOLOGY LIMITED

发明人： Wenqiang Li ,  Shuirong Zhang ,  Chunrui Xu ,  Juan Ma

IPC分类号： H01M10/0567 ,  H01M10/0525 ,  H01M10/0569

CPC分类号： H01M10/0567 ,  H01M10/0525 ,  H01M10/0569 ,  H01M2300/0042

摘要： The present application relates to an electrolytic solution and an electrochemical device using same. The electrolytic solution of the present application comprises a compound containing a —CN functional group and a compound containing a P—O bond. By introducing the compound containing a —CN functional group and the compound containing a P—O bond into the electrolytic solution, an active material can be better protected, thereby effectively improving floatation performance and nailing performance of a battery, and cycle impedance of the battery.

公开(公告)号：US20230187695A1

公开(公告)日：2023-06-15

申请号：US17281167

申请日：2020-05-22

申请人： Ningde Amperex Technology Limited ,  DONGGUAN AMPEREX TECHNOLOGY LIMITED

发明人： Xiexue Peng ,  Jianming Zheng ,  Wenqiang Li ,  Hui Chen

IPC分类号： H01M10/0567 ,  H01M4/04 ,  H01M10/0525 ,  H01M10/0569 ,  H01M50/417 ,  H01M50/449

CPC分类号： H01M10/0567 ,  H01M4/0404 ,  H01M10/0525 ,  H01M10/0569 ,  H01M50/417 ,  H01M50/449 ,  H01M2300/0051

摘要： An electrolyte including a compound





R11 is a covalent bond, a substituted or unsubstituted C1-C20 alkylidene group, a substituted or unsubstituted C2-C20 alkenylene group, a substituted or unsubstituted C2-C20 alkynylene group, a substituted or unsubstituted C6-C20 arylene group, a substituted or unsubstituted C3-C20 heteroarylene group, a substituted or unsubstituted C3-C20 cycloalkylene group,





or a combination thereof. R12, R13, and R14 are a substituted or unsubstituted C1-C20 alkylidene group, C2-C20 alkenylene group, C2-C20 alkynylene group, C6-C20 arylene group, C3-C20 heteroarylene group, or C3-C20 cycloalkylene group;





or a combination thereof. R15 and R16 are a C1-C20 alkylidene group, a substituted or unsubstituted C2-C20 alkenylene group, a substituted or unsubstituted C2-C20 alkynylene group, a substituted or unsubstituted C6-C20 arylene group, a substituted or unsubstituted C3-C20 heteroarylene group, or a substituted or unsubstituted C3-C20 cycloalkylene group.

公开(公告)号：US11031630B2

公开(公告)日：2021-06-08

申请号：US16422012

申请日：2019-05-24

申请人： NINGDE AMPEREX TECHNOLOGY LIMITED

发明人： Shuirong Zhang ,  Wenqiang Li ,  Qian Wen ,  Chao Tang

IPC分类号： H01M10/0567 ,  H01M10/0569 ,  H01M10/0525 ,  C07C255/05 ,  C07C255/04 ,  C07C255/09 ,  H01M10/42 ,  C07D239/62 ,  C07D239/66 ,  C07F7/04

摘要： The present application provides an electrolyte and an electrochemical device. The electrolyte according to the present application comprises a carboxylate, a barbituric acid compound and a nitrile compound. Adding a barbituric acid compound and a nitrile compound of particular structure to an electrolyte containing a carboxylate solvent can significantly improve the rate performance of an electrochemical device, and mitigate capacity loss after storage at room temperature, and cycle fading and gas generation at high-temperature of the electrochemical device.

公开(公告)号：US20190245245A1

公开(公告)日：2019-08-08

申请号：US16162379

申请日：2018-10-16

申请人： Ningde Amperex Technology Limited

发明人： Shuirong Zhang ,  Chao Tang ,  Wenqiang Li

IPC分类号： H01M10/0569 ,  H01M10/0525

CPC分类号： H01M10/0569 ,  H01M10/0525 ,  H01M2300/0028

摘要： The present application provides an electrolyte and a secondary battery comprising the same. The electrolyte is prepared by adding a siloxane compound, a nitrile compound and an electrolyte salt with different contents into an organic solvent.

公开(公告)号：US20230207885A1

公开(公告)日：2023-06-29

申请号：US18087033

申请日：2022-12-22

申请人： Ningde Amperex Technology Limited

发明人： Wenqiang Li ,  Jian Liu ,  Chao Tang

IPC分类号： H01M10/0569 ,  H01M4/04 ,  H01M10/0567 ,  H01M10/0568

CPC分类号： H01M10/0569 ,  H01M4/0404 ,  H01M10/0567 ,  H01M10/0568 ,  H01M2004/028

摘要： An electrochemical apparatus, including an electrolyte and a positive electrode, where the electrolyte includes ethylene carbonate and propylene carbonate, the positive electrode includes a positive electrode current collector and a positive electrode active material layer disposed on at least one surface of the positive electrode current collector, and the positive electrode active material layer includes a positive electrode active material, where percentages of ethylene carbonate and propylene carbonate satisfy a specific relationship, and under an X-ray diffraction (XRD) test, a peak intensity I003 of plane 003 of the positive electrode active material layer and a peak intensity I104 of plane 104 of the positive electrode active material layer satisfy a specific relationship. With the above configuration, the electrochemical apparatus of this application shows excellent performances, especially the high-temperature floating charge performance.