公开(公告)号：US20240356070A1

公开(公告)日：2024-10-24

申请号：US18292337

申请日：2022-06-20

Applicant: SHENZHEN CAPCHEM TECHNOLOGY CO., LTD.

Inventor： Shiguang Hu ,  Yunxian Qian ,  Zhengsheng Zhang ,  Xiaoxia Xiang ,  Yonghong Deng

IPC: H01M10/0567 ,  H01M4/02 ,  H01M4/505 ,  H01M4/62 ,  H01M10/0525 ,  H01M10/42

CPC classification number: H01M10/0567 ,  H01M4/505 ,  H01M4/625 ,  H01M10/0525 ,  H01M10/4235 ,  H01M2004/028 ,  H01M2300/004

Abstract: The application relates to the technical field of electrochemistry, in particular to a lithium ion battery, which comprises a positive electrode, a negative electrode and an electrolyte; the positive electrode comprises a positive electrode active material and a conductive agent, the positive electrode active material is a manganese-containing positive electrode material; the electrolyte comprises a compound represented by the following structural formula 1:




The positive electrode active material, the conductive agent and the compound represented by structural formula 1 meet the following condition:





0
.
5

≤


D
⁢
r
×
T
⁢
r

w

≤

1
⁢
6





wherein, Dr and Tr are the ratios of the average particle size and specific surface area of the positive electrode active material to the conductive agent, respectively; w is the mass percentage of the compound represented by structural formula 1 in the electrolyte, and the unit is %.

公开(公告)号：US11502300B1

公开(公告)日：2022-11-15

申请号：US17630514

申请日：2021-12-27

Applicant: SHENZHEN CAPCHEM TECHNOLOGY CO., LTD.

Inventor： Yunxian Qian ,  Shiguang Hu ,  Yonghong Deng ,  Hongmei Li ,  Xiaoxia Xiang

IPC: H01M4/131 ,  H01M4/60 ,  H01M10/0567 ,  H01M4/36 ,  H01M4/525 ,  H01M4/505 ,  H01M4/02

Abstract: Provided is a secondary battery, comprising a positive electrode, the positive electrode comprises a positive electrode material layer, and the positive electrode material layer comprises a positive electrode active material and a compound represented by structural formula I: the positive electrode active material includes one or more of the compounds represented by Li1+xNiaCobM′1−a−bO2−yAy and Li1+zMncL2−cO4−dBd; the positive electrode material layer meets the following requirements: 0.05≤p·u/v≤15 wherein, u is the percentage mass content of element phosphorus in the positive electrode material layer, and the unit is wt %; v is the percentage mass content of element M in the positive electrode material layer, element M is selected from one or two of Mn and Al, and the unit is wt %; p is the surface density of one single surface of the positive electrode material layer, and the unit is mg/cm2.

公开(公告)号：US20250062412A1

公开(公告)日：2025-02-20

申请号：US18721453

申请日：2022-12-07

Applicant: SHENZHEN CAPCHEM TECHNOLOGY CO., LTD.

Inventor： Yunxian Qian ,  Zhongbo Liu ,  Shiguang Hu ,  Yonghong Deng ,  Yong Wang ,  Xiong Huang

IPC: H01M10/0567 ,  H01M4/02 ,  H01M4/525 ,  H01M4/583 ,  H01M10/0568 ,  H01M10/0569

Abstract: A non-aqueous electrolyte is provided and includes an electrolyte salt, a non-aqueous organic solvent, and an additive. The non-aqueous organic solvent includes a carboxylate, and the additive comprises a compound represented by formula 1: where n is 0 or 1, A is selected from C or O, X is selected from R1 and R2 are each independently selected from H, R1 and R2 are not selected from H simultaneously, and X, R1 and R2 at least contain one sulfur atom. The non-aqueous electrolyte satisfies following conditions: 0.02≤an/m≤9, 0.01%≤a≤5%, 5%≤m≤70%, and 8%≤n≤25%; where a is a mass percentage content of the compound represented by the formula 1 in the non-aqueous electrolyte, in %; m is a mass percentage content of the carboxylate in the non-aqueous electrolyte, in %; and n is a mass percentage content of the electrolyte salt in the non-aqueous electrolyte, in %. A conductivity of the non-aqueous electrolyte at 25° C. is greater than or equal to 5 mS/cm.

公开(公告)号：US20240421353A1

公开(公告)日：2024-12-19

申请号：US18697481

申请日：2022-12-13

Applicant: SHENZHEN CAPCHEM TECHNOLOGY CO., LTD.

Inventor： Yunxian Qian ,  Shiguang Hu ,  Yonghong Deng ,  Weixin Liu ,  Yong Wang ,  Xionggui Lin ,  Li Guo ,  Yanmei Jin

IPC: H01M10/0567 ,  H01M4/02 ,  H01M4/505 ,  H01M4/525 ,  H01M4/583 ,  H01M10/0525

Abstract: In order to overcome the problems of battery expansion and capacity attenuation of the existing lithium ion battery during long-term high-temperature cycle, the application provides a lithium ion battery, which comprises a positive electrode, a negative electrode and a non-aqueous electrolyte, the non-aqueous electrolyte comprise an additive A, an additive B and an additive C; the lithium ion battery satisfies the following condition: 0 . 0 ⁢ 1 ⁢ 5 ≤ ( a + b + c ) × V ≤ 0.09 ; when the lithium ion battery meets the condition of 0.015≤(a+b+c)×V≤0.09, the problem of gas production of electrolyte during long-term high-temperature cycle can be effectively solved, and the expansion rate of battery can be effectively reduced. Meanwhile, with catalysis under higher voltage, the additive could undergo special oxidation reaction on the positive electrode surface, forming a more stable and good protective film, which makes the positive electrode better protected, thus effectively improving the long-term high-temperature cycle capacity retention rate of the battery.

公开(公告)号：US20240194871A1

公开(公告)日：2024-06-13

申请号：US18279052

申请日：2022-03-29

Applicant: SHENZHEN CAPCHEM TECHNOLOGY CO., LTD.

Inventor： Yunxian Qian ,  Shiguang Hu ,  Xiaoxia Xiang ,  Hongmei Li ,  Chaowei Cao ,  Yonghong Deng

IPC: H01M4/58 ,  H01M10/052 ,  H01M10/0567

CPC classification number: H01M4/5825 ,  H01M10/052 ,  H01M10/0567 ,  H01M2004/021

Abstract: Provided is a lithium iron phosphate battery, comprising a positive electrode, a negative electrode and a non-aqueous electrolyte, wherein the positive electrode comprises a positive electrode material layer with a compacted density of 2.3-2.8 g/cc, and the positive electrode material layer comprises a positive electrode active material, the positive electrode active material comprises LiFePO4; the non-aqueous electrolyte comprises a solvent, an electrolyte salt, vinylene carbonate and a compound represented by Structural formula 1; an addition amount of the compound represented by Structural formula 1 is 0.01-5% based on a total mass of the non-aqueous electrolyte being 100%. The lithium iron phosphate battery provided by the application adopts the combination of vinylene carbonate and the compound represented by Structural formula 1, which can inhibit the generation of lithium dendrites and dissolution of Fe, and ultimately improve the high-temperature and safety performance of the High-compacted-density lithium iron phosphate battery.


A-D-B-E-C  Structural formula 1

公开(公告)号：US20240178368A1

公开(公告)日：2024-05-30

申请号：US18010818

申请日：2022-11-16

Applicant: SHENZHEN CAPCHEM TECHNOLOGY CO., LTD.

Inventor： Yonghong Deng ,  Yunxian Qian ,  Shiguang Hu ,  Guiyan Sun ,  Xiaoxia Xiang ,  Xionggui Lin ,  Chaowei Cao

IPC: H01M4/134 ,  H01M10/0567

CPC classification number: H01M4/134 ,  H01M10/0567 ,  H01M2004/027 ,  H01M2300/0028

Abstract: The present application provides a secondary battery, including a positive electrode, a negative electrode with a negative electrode material layer, and a non-aqueous electrolyte, the negative electrode material layer comprises a negative electrode active material, and the negative electrode active material comprises a silicon-based material;
the non-aqueous electrolyte comprises a solvent, an electrolyte salt and an additive, the additives comprises a compound represented by structural formula 1;




wherein n is 0 or 1, A is selected from C or O, X is selected from






R1 and R2 are each independently selected from H,
R1 and R2 are not selected from H at the same time, and X, R1 and R2 comprise at least one sulfur atom;








the secondary battery meets the following requirements:







0
.
2

⁢
1

≤


m
*
n
*
r

S

≤
40

;




and 40%≤m≤90%, 0.05%≤n≤2%, 1.2 g/cm3≤r≤1.8 g/cm3, 5%≤S≤30%.

公开(公告)号：US20230327210A1

公开(公告)日：2023-10-12

申请号：US18335767

申请日：2023-06-15

Applicant: HUAWEI TECHNOLOGIES CO., LTD. ,  Shenzhen Capchem Technology Co.,Ltd.

Inventor： Qiang Ma ,  Yonghong Deng ,  Guangzhao Zhang ,  Xiang Hong

IPC: H01M10/0569 ,  H01M10/0525 ,  H01M10/0567 ,  H01M10/0568

CPC classification number: H01M10/0569 ,  H01M10/0525 ,  H01M2300/0054 ,  H01M10/0568 ,  H01M2300/004 ,  H01M10/0567

Abstract: This application provides a battery electrolytic solution, including an electrolyte salt and a non-aqueous organic solvent. The non-aqueous organic solvent includes a first organic solvent shown in a formula (I) and/or a second organic solvent shown in a formula (II): R1—S(═O)x—N(—R3)—R2 formula (I); and R1—S(═O)x—N(—R3)—S(═O)y—R4 formula (II). R1 and R4 are separately selected from fluoroalkyl, fluoroalkoxy, fluoroalkenyl, fluoroalkenyloxy, fluoroaryl, or fluoroaryloxy. R2 and R3 are separately selected from alkyl, alkoxy, alkenyl, alkenyloxy, aryl, or aryloxy. x is 1 or 2, and y is 1 or 2. A total content in mass of the first organic solvent and/or the second organic solvent in the electrolytic solution ranges from 10% to 90%. The electrolytic solution includes the first organic solvent and/or the second organic solvent of a high content in mass.

公开(公告)号：US20230163308A1

公开(公告)日：2023-05-25

申请号：US17920822

申请日：2021-04-23

Applicant: SHENZHEN CAPCHEM TECHNOLOGY CO., LTD.

Inventor： Zhongbo Liu ,  Xiaohu Ao ,  Yonghong Deng ,  Yuanyuan Kang ,  Yunxian Qian

IPC: H01M4/62 ,  H01M4/36 ,  H01M4/38 ,  H01M4/40

CPC classification number: H01M4/628 ,  H01M4/366 ,  H01M4/382 ,  H01M4/405 ,  H01M4/387 ,  H01M4/381 ,  H01M2004/027

Abstract: In order to overcome the problem of metal dendrites caused by uneven deposition on the surface of the existing metal electrode, the present application provides a metal electrode, comprising a metal layer and a coating, the coating comprises at least one block copolymer; the block copolymer comprises a first polymer block for independently conducting metal ions and a second polymer block for providing mechanical strength; a shear modulus of the coating is ≥107 Pa, and a thickness of the coating is 500 nm-50 μm. Meanwhile, the application also discloses a battery comprising the metal electrode. The metal electrode provided by the application has good ionic conductivity and inhibition capability for metal dendrite.

公开(公告)号：US20220006123A1

公开(公告)日：2022-01-06

申请号：US17281280

申请日：2019-09-29

Applicant: SHENZHEN CAPCHEM TECHNOLOGY CO., LTD.

Inventor： Yonghong Deng ,  Bing Han ,  Yinglin Xiao

IPC: H01M10/0568 ,  H01M10/052 ,  H01M10/0567 ,  H01M10/0569 ,  H01M4/36 ,  H01M4/38

Abstract: Provided is a metal-sulfur battery, comprising a positive electrode material, a negative electrode material and an electrolyte, the positive electrode material comprises one of elemental sulfur and S-based compound; the electrolyte comprises a solvent and an electrolyte salt; and the electrolyte salt comprises one or more salts represented by structural formulas 1-3: wherein, R1 is selected from S or Se; R2 is selected from C, Si, Ge or Sn; M1 is selected from N, B, P, As, Sb or Bi; M2 is selected from Li, Na, K, Ru, Cs, Fr, Al, Mg, Zn, Be, Ca, Sr, Ba or Ra; R3 is selected from a carbon chain or an aromatic ring with part or all of hydrogen substituted by other elements or groups. The metal-sulfur battery provided by the disclosure can effectively solve the short circuit problem caused by metal dendrites on the negative electrode of existing metal-sulfur battery.