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公开(公告)号：US20200227784A1
公开(公告)日：2020-07-16
申请号：US16640055
申请日：2017-12-28
Applicant: SHENZHEN CAPCHEM TECHNOLOGY CO., LTD.
Inventor： Qiao Shi , Shiguang Hu , Guanjie Ai , Muchong Lin
IPC: H01M10/0567 , H01M10/0525 , H01M10/0565
Abstract: In order to overcome the problems of influence of residual moisture, poor cycle performance and poor high-temperature storage performance in the existing lithium ion battery, the application provides a non-aqueous electrolyte for lithium ion battery, comprising a solvent, lithium salt and maleic anhydride copolymer, wherein the weight-average molecular weight of the maleic anhydride copolymer is less than or equal to 500,000; Furthermore, the percentage mass content of the maleic anhydride copolymer is 0.5% or more based on the total mass of the non-aqueous electrolyte being 100%. Meanwhile, the application also provides a lithium ion battery comprising the non-aqueous electrolyte. The non-aqueous electrolyte provided by the application is added with maleic anhydride copolymer with a content of more than 0.5% and a weight-average molecular weight of less than 500,000, so that the high-temperature storage and cycle performances of the lithium ion battery are effectively improved.
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公开(公告)号：US20200161704A1
公开(公告)日：2020-05-21
申请号：US16610905
申请日：2017-06-23
Applicant: SHENZHEN CAPCHEM TECHNOLOGY CO., LTD.
Inventor： Zhaohui Deng , Shiguang Hu , Muchong Lin , Qiao Shi
IPC: H01M10/0567 , H01M10/0525 , H01M10/0569 , C07D407/04 , C07F7/18
Abstract: To solve the problems that the existing non-aqueous electrolyte for lithium ion battery containing fluorinated solvent generates serious gas expansion when improving high-temperature cycle performance and affects high-temperature safety performance of battery. The application provides a non-aqueous electrolyte for lithium ion battery. The non-aqueous electrolyte for lithium ion battery comprises a compound A and a compound B, wherein the compound A is at least one of compounds represented by the following structural formula I, formula II and formula III; the compound B is a compound represented by the following structural formula IV; formula I: R1—COO—R2; formula II: R3—OCOO—R4. The non-aqueous electrolyte for lithium ion battery provided by the invention contains both the compound A and the compound B, the synergistic effect of compound A and compound B can effectively improve high-temperature cycle performance and high-temperature storage performance of battery, and can also give consideration to low-temperature performance of battery.
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公开(公告)号：US20200020973A1
公开(公告)日：2020-01-16
申请号：US16490900
申请日：2017-06-22
Applicant: SHENZHEN CAPCHEM TECHNOLOGY CO., LTD.
Inventor： Qiao Shi , Muchong Lin , Shiguang Hu , Ruixing Liu
IPC: H01M10/0525 , H01M10/0566
Abstract: In order to solve the problem of insufficient cycle performance and high-temperature storage performance of the existing non-aqueous electrolyte for lithium ion battery containing maleic anhydride copolymer, the application provides a non-aqueous electrolyte for lithium ion battery. The non-aqueous electrolyte for lithium ion battery comprises a compound A represented by formula I and a compound B represented by formula II, In formula I, R7 and R8 are independently selected from one of hydrogen atom, halogen atom, —O—R9 or aryl, wherein n is a positive integer and R9 is a C1-C4 alkyl group; In formula II, R1, R2, R3, R4, R5 and R6 are each independently selected from one of hydrogen atom, fluorine atom and C1-C5 group. The non-aqueous electrolyte for lithium ion battery provided by the invention can improve the cycle stability and high-temperature storage performance of the battery through the effections of compound A and compound B.
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公开(公告)号：US10530016B2
公开(公告)日：2020-01-07
申请号：US15557788
申请日：2015-12-24
Applicant: SHENZHEN CAPCHEM TECHNOLOGY CO., LTD.
Inventor： Qiao Shi , Qun Chen , Shiguang Hu , Qi Huang , Xue Zhou
IPC: H01M10/42 , H01M10/0525 , H01M10/0567 , H01M10/0568 , H01M4/525 , H01M10/0569
Abstract: An electrolyte for a lithium-ion battery and a lithium-ion battery. The electrolyte for a lithium-ion battery comprises a non-aqueous organic solvent, a lithium salt, and an electrolyte additive. The additive is selected from compounds of formula 1, wherein R1 is selected from unsaturated alkyls having three to six carbon atoms, and R2 is selected from alkylenes having two to five carbon atoms. Because the molecular structure of the additive comprises both unsaturated carbon-carbon bonds and cyanos, polymerization can occur on an electrode surface to form a compound containing multiple cyanos. The compound can be complexed with metal ions on a surface of a cathode material, thereby inhibiting electrolyte decomposition on an electrode surface to improve high-temperature storage and cyclability of a battery.
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公开(公告)号：US20190393551A1
公开(公告)日：2019-12-26
申请号：US16490895
申请日：2017-06-23
Applicant: SHENZHEN CAPCHEM TECHNOLOGY CO., LTD.
Inventor： Qiao Shi , Muchong Lin , Shiguang Hu , Guanjie Ai
IPC: H01M10/0567 , H01M10/0525 , H01M4/525
Abstract: To address the existing problem of insufficient cycle performance and high-temperature storage performance of lithium ion battery electrolyte at high pressure, the disclosure provides a non-aqueous electrolyte for lithium ion battery. The non-aqueous electrolyte for lithium ion battery comprises a cyano-containing compound A and a compound B represented by formula I, The non-aqueous electrolyte for lithium ion battery provided by the disclosure contains both the cyano-containing compound A and the compound B, so that the lithium ion battery containing the non-aqueous electrolyte can have better cycle performance and high-temperature storage performance at high pressure.
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Patent Agency Ranking
公开(公告)号：US20190089000A1
公开(公告)日：2019-03-21
申请号：US16084929
申请日：2016-07-27
Applicant: SHENZHEN CAPCHEM TECHNOLOGY CO., LTD.
Inventor： Qiao SHI , Muchong LIN , Shiguang HU , Hailing ZHANG , Qi GUO
IPC: H01M10/0567 , H01M10/0525
Abstract: The present invention discloses a lithium-ion battery electrolyte and a lithium-ion battery. The electrolyte comprises an organic non-aqueous solution, a lithium salt, and an additive. The additive comprises: (A) fluoroethylene carbonate; (B) at least one compound from the following: a saturated dinitrile or an unsaturated nitrile as represented by structural formula (1), wherein R1 is an unsaturated hydrocarbon group with 3-6 carbon atoms and R2 is an alkene group with 2-5 carbon atoms; and (C) at least one unsaturated phosphate ester as represented by structural formula (2), wherein R3, R4, and R5 are each a hydrocarbon with 1-4 carbon atoms, and at least one of R3, R4, and R5 contain an unsaturated hydrocarbon with a triple bond.
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47.发明申请公开(公告)号：US20180342356A1
公开(公告)日：2018-11-29
申请号：US16055172
申请日：2018-08-06
Applicant: Shenzhen Capchem Technology Co., Ltd.
Inventor： Liqing HUANG , Yun JIA , Fengliang HUANG , Mingjie WANG
Abstract: An electrolyte for an aluminum electrolysis capacitor and the aluminum electrolysis capacitor using the electrolyte are provided. The electrolyte comprises a primary solute, a primary solvent, and an additive as shown in a structural formula 1, wherein, R1 and R2are each independently selected from —CH3, —CH2CH3or —OH; R3 and R4 are each in selected from —(CH2CH2O)mH or —H, and n and m are integrals ranging from 1 to 10000, respectively. The electrolyte has excellent anti-corrosive performance and is capable of maintaining long load service life under the condition of relatively high chlorine ion content, and there is no evidence of corrosion in the capacitor after it is disassembled.
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48.发明申请公开(公告)号：US20170110253A1
公开(公告)日：2017-04-20
申请号：US15038041
申请日：2015-09-08
Applicant: SHENZHEN CAPCHEM TECHNOLOGY CO., LTD.
Inventor： Yang Liu , Mingjie Wang
Abstract: The present invention discloses an electrolyte solution for an aluminum electrolytic capacitor and an aluminum electrolytic capacitor using the electrolyte solution. The electrolyte solution for an aluminum electrolytic capacitor, contains electrolyte (A) and an organic solvent (B); the electrolyte (A) contains electrolyte (C) and electrolyte (D); the electrolyte (C) consists of cations (E) and alkyl phosphate anions, and the electrolyte (D) consists of cations (F) and phthalic acid anions. The electrolyte solution of the present invention can obtain high specific conductivity and sparking voltage, and can realize aluminum electrolytic capacitor without a risk of corrosion of capacitor parts at the same time.
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公开(公告)号：US20250087749A1
公开(公告)日：2025-03-13
申请号：US18580635
申请日：2022-06-20
Applicant: SHENZHEN CAPCHEM TECHNOLOGY CO., LTD.
Inventor： Shuhuai Xiang , Zhongcang Zhou , Yang Yi , Shiguang Hu
IPC: H01M10/0567 , H01M10/0525 , H01M10/0568 , H01M10/0569 , H01M10/42
Abstract: The application relates to the technical field of lithium ion batteries, in particular to a non-aqueous electrolyte and a lithium ion battery. In order to overcome the technical problem of poor high-temperature performance of the existing lithium ion battery, the application provides a non-aqueous electrolyte, comprising a solvent, a lithium salt and at least one of bicyclic compound represented by structural formulas 1-1 to 1-3: Meanwhile, the application also discloses a lithium ion battery comprising the non-aqueous electrolyte. The non-aqueous electrolyte and the lithium ion battery provided by the application can effectively improve the high-temperature cycle performance and high-temperature storage performance of battery.
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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 %.
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