公开(公告)号：US20240347771A1

公开(公告)日：2024-10-17

申请号：US18675164

申请日：2024-05-28

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Cuiping Zhang ,  Changlong Han ,  Peng Fan ,  Zeli Wu ,  Lei Huang

IPC: H01M10/0567 ,  C01B35/12 ,  C01G45/12 ,  C01G53/00 ,  H01M4/02 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/42

CPC classification number: H01M10/0567 ,  C01B35/121 ,  C01G45/1228 ,  C01G53/50 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/4235 ,  C01P2002/50 ,  C01P2006/40 ,  H01M2004/028 ,  H01M2220/20 ,  H01M2300/0025

Abstract: Provided is a secondary battery. The secondary battery includes a positive electrode containing a positive electrode active material, a negative electrode, an electrolyte, and a separator, where the positive electrode active material contains a transition metal element, and a molar ratio of Mn in the transition metal element, r(Mn), satisfies 0.3≤r(Mn)≤1; and the electrolyte contains an additive selected from at least one of a compound, a compound, and a compound capable of complexing manganese ions, and a compound serving as a lithium salt. A total mass percentage of the compound, compound, and compound in the electrolyte is W1%, where W1% is 0.1% to 5%; a molar ratio C1 (mol/L) of the compound in the electrolyte satisfies 0.2≤C1≤1.5; and r(Mn), C1 and W1% satisfy the following relation: 13≤(100W1%+12C1)/r(Mn)≤20.

公开(公告)号：US20240195016A1

公开(公告)日：2024-06-13

申请号：US18412608

申请日：2024-01-15

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Cuiping Zhang ,  Changlong Han ,  Peng Fan ,  Zeli Wu ,  Lei Huang

IPC: H01M50/489 ,  H01M10/0525 ,  H01M50/42 ,  H01M50/431 ,  H01M50/449

CPC classification number: H01M50/489 ,  H01M50/42 ,  H01M50/431 ,  H01M50/449 ,  H01M10/0525

Abstract: The present application discloses a multi-layer composite separator, a secondary battery and an electrical device containing the same, the multi-layer composite separator including a first substrate layer and a second substrate layer, wherein the multi-layer composite separator further includes a water-scavenging material and an acid-scavenging material, the acid-scavenging material being disposed between the first substrate layer and the second substrate layer, and the water-scavenging material being disposed on at least one surface of the first substrate layer and the second substrate layer. The secondary battery of the present application has high energy density and long service life at the same time.

公开(公告)号：US20240170726A1

公开(公告)日：2024-05-23

申请号：US18426355

申请日：2024-01-30

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Zeli Wu ,  Huiling Chen ,  Changlong Han ,  Bin Jiang ,  Qian Liu ,  Jianfu He ,  Jingxuan Sun ,  Lei Huang

IPC: H01M10/0569 ,  H01M4/02 ,  H01M4/505 ,  H01M4/525 ,  H01M10/052 ,  H01M10/0567 ,  H01M10/0568

CPC classification number: H01M10/0569 ,  H01M4/505 ,  H01M4/525 ,  H01M10/052 ,  H01M10/0567 ,  H01M10/0568 ,  H01M2004/028

Abstract: This application provides a non-aqueous electrolyte and a preparation method thereof, and a secondary battery and an electric apparatus containing the same. The non-aqueous electrolyte contains the non-aqueous solvent and lithium ions, first cations, and first anions dissolved therein, where the first cation is a metal cation Men+ other than the lithium ion, n representing a chemical valence of the metal cation; the first anion is a tetrafluoroborate anion BF4−; mass concentration of the first cations in the non-aqueous electrolyte is D1 ppm, and mass concentration of the first anions in the non-aqueous electrolyte is D2 ppm, both based on total mass of the non-aqueous electrolyte; and the non-aqueous electrolyte satisfies that D1 is 0.1 to 1250 and that D1/D2 is 0.02 to 2. The non-aqueous electrolyte in this application enables the secondary battery to have good cycling performance, safety performance, and kinetic performance.

公开(公告)号：US20250140941A1

公开(公告)日：2025-05-01

申请号：US18800159

申请日：2024-08-12

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Zeli Wu ,  Changlong Han ,  Bin Jiang ,  Jie Guo

IPC: H01M10/42 ,  H01M4/02 ,  H01M4/525 ,  H01M4/58 ,  H01M10/0525 ,  H01M10/0567 ,  H01M10/0568 ,  H01M10/0569

Abstract: This application relates to a lithium-ion battery, a battery, and an electric apparatus. The lithium-ion battery includes an electrolyte and a positive electrode plate. The electrolyte includes a lithium salt, where the lithium salt includes lithium hexafluorophosphate, and based on a total mass of the electrolyte, a mass proportion of the lithium hexafluorophosphate is 15% to 20%. The positive electrode plate includes a positive electrode current collector and a positive electrode film layer disposed on at least one side of the positive electrode current collector and containing a positive electrode active material. This application can improve cycling performance of the lithium-ion battery.

公开(公告)号：US20250140895A1

公开(公告)日：2025-05-01

申请号：US18800152

申请日：2024-08-12

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Zeli Wu ,  Changlong Han ,  Bin Jiang ,  Jie Guo

IPC: H01M10/0525 ,  C30B29/22 ,  H01M4/36 ,  H01M4/48 ,  H01M4/525 ,  H01M4/587 ,  H01M10/0567 ,  H01M10/0568 ,  H01M10/0569

Abstract: This application relates to a lithium-ion battery, a battery, and an electric apparatus. The lithium-ion battery includes an electrolyte and a positive electrode plate. The electrolyte includes lithium salt, the lithium salt includes lithium hexafluorophosphate, and a mass proportion of the lithium hexafluorophosphate relative to a total mass of the electrolyte is 15% to 20%. The positive electrode plate includes a positive electrode current collector and a positive electrode film layer disposed on at least one side of the positive electrode current collector and containing a positive electrode active material. This application can improve cycling performance of the lithium-ion battery.

公开(公告)号：US20240372145A1

公开(公告)日：2024-11-07

申请号：US18773617

申请日：2024-07-16

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Huiling Chen ,  Zeli Wu ,  Changlong Han ,  Jie Guo ,  Lei Huang ,  Cuiping Zhang ,  Wenhao Liu

IPC: H01M10/0567 ,  H01M4/02 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0569

Abstract: The present application provides a secondary battery, a battery module, a battery pack, and an electrical device. The secondary battery includes a positive electrode plate, a negative electrode plate comprising a negative electrode active material; and an electrolytic solution including a first additive and a carbonate solvent, and the first additive including a boron-containing lithium salt and an ester additive, which are configured to form a solid electrolyte interface film on the surface of the negative electrode active material, wherein a discharge capacity of the secondary battery is denoted as B1 in Ah, a change in amount of gas production of the secondary battery is denoted as B2 in mL, a mass of the electrolytic solution is denoted as C in g, a reduction potential of the first additive relative to lithium metal is denoted as D.

公开(公告)号：US20230043895A1

公开(公告)日：2023-02-09

申请号：US17822079

申请日：2022-08-24

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Zeli Wu ,  Changlong Han

IPC: H01M10/0567 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0569

Abstract: Various embodiments provide an electrolyte solution, a secondary battery, a battery module, a battery pack and an electric device. In those embodiments, the electrolyte solution includes an electrolyte, a solvent and an additive, the additive including sodium hydrosulfite. Various embodiments improve an overall performance of the secondary battery, for example, initial DCR, storage gas production, a rate performance, or the like.

公开(公告)号：US20220109190A1

公开(公告)日：2022-04-07

申请号：US17550934

申请日：2021-12-14

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Chengdu Liang ,  Zeli Wu ,  Peipei Chen ,  Chenghua Fu

IPC: H01M10/0568 ,  H01M10/0569 ,  H01M10/0567 ,  H01M10/0525 ,  H01M4/505 ,  H01M4/525 ,  H01M4/38 ,  H01M4/587

Abstract: This application provides a secondary battery and an apparatus containing the secondary battery. The secondary battery includes an electrolytic solution. The electrolytic solution includes an electrolyte salt and an organic solvent. The electrolyte salt includes lithium bis(fluorosulfonyl)imide (LiFSI) and lithium hexafluorophosphate (LiPF6). A volumetric molar concentration of the LiFSI in the electrolytic solution is 0.8 mol/L-1.2 mol/L; and a volumetric molar concentration of the LiPF6 in the electrolytic solution is 0.15 mol/L-0.4 mol/L. The organic solvent includes ethylene carbonate (EC), and mass percent of the EC in the organic solvent is less than or equal to 20%.

公开(公告)号：US20240396088A1

公开(公告)日：2024-11-28

申请号：US18791446

申请日：2024-08-01

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Jie Guo ,  Zeli Wu ,  Changlong Han ,  Guan Wang

IPC: H01M10/0568 ,  H01M4/02 ,  H01M4/525 ,  H01M10/0525 ,  H01M10/0567 ,  H01M10/42

Abstract: The present application provides a non-aqueous electrolyte, a secondary battery, and an electrical device. The non-aqueous electrolyte includes at least two of a boron-containing lithium salt additive, a phosphorus-containing lithium salt additive, and a sulfur-containing lithium salt additive; based on a total mass of the non-aqueous electrolyte, a mass percentage of the boron-containing lithium salt additive is A1%; based on the total mass of the non-aqueous electrolyte, a mass percentage of the phosphorus-containing lithium salt additive is A2%; based on the total mass of the non-aqueous electrolyte, a mass percentage of the sulfur-containing lithium salt additive is A3%; and the non-aqueous electrolyte satisfies: 0

公开(公告)号：US20240266606A1

公开(公告)日：2024-08-08

申请号：US18599285

申请日：2024-03-08

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Zeli Wu ,  Changlong Han ,  Lei Huang ,  Cuiping Zhang

IPC: H01M10/0567 ,  H01M10/0525

CPC classification number: H01M10/0567 ,  H01M10/0525 ,  H01M2300/0025

Abstract: Provided are a lithium-ion battery, including a positive electrode sheet, a negative electrode sheet, a separator, and an electrolyte, wherein in the battery, a ratio of a negative electrode capacity to a positive electrode capacity is a, and the electrolyte includes thiourea compounds in an amount of b weight % based on the total weight of the electrolyte, wherein the lithium-ion battery meets the following relationship: a