公开(公告)号：US20240313213A1

公开(公告)日：2024-09-19

申请号：US18251436

申请日：2023-03-10

Applicant: SHENZHEN CAPCHEM TECHNOLOGY CO., LTD.

Inventor： Yunxian QIAN ,  Shiguang HU ,  Yonghong DENG ,  Hongmei LI ,  Xiaoxia XIANG ,  Yong WANG ,  Zhaohua ZHANG

IPC: H01M4/525 ,  H01M4/02 ,  H01M4/131 ,  H01M4/36 ,  H01M4/62 ,  H01M10/0525 ,  H01M10/0567

CPC classification number: H01M4/525 ,  H01M4/131 ,  H01M4/366 ,  H01M4/628 ,  H01M10/0525 ,  H01M10/0567 ,  H01M2004/021 ,  H01M2004/028 ,  H01M2300/0025

Abstract: A positive electrode sheet includes a positive electrode current collector and a positive electrode material layer formed on the positive electrode current collector. The positive electrode material layer includes a high-nickel positive electrode material represented by formula I and a compound represented by formula II: LiaNiqCoyMzO2, Formula I, where 0.9≤a≤1.2, 0.7≤q≤1, y≥0, z≥0, and q+y+z=1. M is selected from one or both of Mn and Al. R1, R2, and R3 are each independently selected from an alkyl group of 1 to 5 carbon atoms, a fluoroalkyl group of 1 to 5 carbon atoms, an ether group of 1 to 5 carbon atoms, a fluoroether group of 1 to 5 carbon atoms, an unsaturated hydrocarbonyl group of 2 to 5 carbon atoms.

公开(公告)号：US20240055659A1

公开(公告)日：2024-02-15

申请号：US18258422

申请日：2021-12-16

Applicant: SHENZHEN CAPCHEM TECHNOLOGY CO., LTD.

Inventor： Yunxian QIAN ,  Shiguang HU ,  Chaowei CAO ,  Pengkai GUO ,  Chi WANG ,  Shuhuai XIANG ,  Qun CHEN ,  Yonghong DENG

IPC: H01M10/0567

CPC classification number: H01M10/0567 ,  H01M2300/0025

Abstract: Provided are a non-aqueous electrolyte comprising a solvent, an electrolyte salt and a first additive, wherein the first additive is selected from at least one of the compounds as shown in structural formula 1: A-D-B-E-C, structural formula 1, wherein A, B, and C are each independently selected from the group consisting of cyclic carbonate groups, cyclic sulfate groups, cyclic sulfite groups, cyclic sulfonate groups, cyclic sulfone groups, cyclic sulfoxide groups, cyclic carboxylate groups or cyclic anhydride groups; D and E are each independently selected from single bond, or groups containing hydrocarbylene groups, ether bonds, sulfur-oxygen double bonds or carbon-oxygen double bonds; and the content of methanol in the non-aqueous electrolyte is 200 ppm or less. Further disclosed is a battery comprising the non-aqueous electrolyte.

公开(公告)号：US20240304822A1

公开(公告)日：2024-09-12

申请号：US18251299

申请日：2023-03-10

Applicant: SHENZHEN CAPCHEM TECHNOLOGY CO., LTD.

Inventor： Yunxian QIAN ,  Shiguang HU ,  Yonghong DENG ,  Yong WANG ,  Hongmei LI

IPC: H01M4/62 ,  H01M4/02 ,  H01M4/131 ,  H01M4/36 ,  H01M4/525 ,  H01M10/0525 ,  H01M10/0567

CPC classification number: H01M4/628 ,  H01M4/131 ,  H01M4/366 ,  H01M4/525 ,  H01M10/0525 ,  H01M10/0567 ,  H01M2004/021 ,  H01M2004/028 ,  H01M2300/0025

Abstract: A positive electrode sheet includes a positive electrode current collector and a positive electrode material layer formed thereon. The positive electrode sheet has a potential range of greater than or equal to 4.25 V with respect to metal lithium. The positive electrode material layer includes a positive electrode active material doped or coated with metal elements and a compound represented by formula I. The positive electrode sheet satisfies:





0.3
≤


(

m
+
n

)


100
⁢
k


≤
59

;




and 50≤m≤10000, 50≤n≤10000, 2.8≤k≤3.8; where m is a content of the compound in the positive electrode material layer; n is a total content of the metal elements doped and coated in the positive electrode material layer; and k is a compacted density of the positive electrode material layer. A characteristic peak appears in a region having a retention time of 6.5 min to 7.5 min.

公开(公告)号：US20210399341A1

公开(公告)日：2021-12-23

申请号：US17286821

申请日：2019-10-29

Applicant: SHANGHAI ZIJIAN CHEMICAL TECHNOLOGY CO., LTD ,  SHENZHEN CAPCHEM TECHNOLOGY CO. LTD

Inventor： Haiying CHE ,  Yonghong DENG ,  Xinrong YANG ,  Zifeng MA

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

Abstract: The present invention relates to an electrolyte, an additive thereof, a secondary cell, and an application thereof. An organic electrolyte according to a first aspect of the invention comprises a salt, a phosphate ester and a fluoroether, and does not comprise a carbonate ester. The salt is a lithium salt or a sodium salt. The electrolyte according to a second aspect of the invention comprises a base electrolyte and an additive. The base electrolyte comprises a sodium salt and a flame retardant solvent. The flame retardant solvent comprises a phosphate ester and a fluoroether. The additive comprises a fluorine-containing additive. The electrolyte and the secondary cell of the present invention increase safety.