公开(公告)号：US20240313263A1

公开(公告)日：2024-09-19

申请号：US18259300

申请日：2021-12-16

Applicant: Shenzhen Capchem Technology Co., Ltd.

Inventor： Shiguang Hu ,  Yunxian Qian ,  Chaowei Cao ,  Pengkai Guo ,  Xiaoxia Xiang ,  Chi Wang ,  Shuhuai Xiang ,  Qun Chen ,  Yonghong Deng

IPC: H01M10/0567 ,  C07D411/14 ,  H01M4/02 ,  H01M4/131 ,  H01M4/525 ,  H01M10/0525

CPC classification number: H01M10/0567 ,  C07D411/14 ,  H01M4/131 ,  H01M4/525 ,  H01M10/0525 ,  H01M2004/028 ,  H01M2300/0025

Abstract: A lithium-ion battery includes a positive electrode, a negative electrode, and a non-aqueous electrolyte. The positive electrode includes a positive electrode material layer, the positive electrode material layer includes a positive electrode active material, and the positive electrode active material includes LiNixCoyMnzL(1-x-y-2)O2, where L is Al, Sr, Mg. Ti, Ca, Zr, Zn, Si, Cu, V or Fe, 0.5≤x≤1, 0≤y≤0.5, 0≤z≤0.5, 0≤x+y+z≤1, and an upper limit voltage of the lithium-ion battery is ≥4.2 V. The non-aqueous electrolyte includes a solvent, an electrolyte salt and a compound represented by formula 1: A-D-B-E-C, Formula 1. Based on a total mass of the non-aqueous electrolyte as 100%, the compound represented by the formula 1 is added in an amount of 0.01 to 5.0%.

公开(公告)号：US20230411689A1

公开(公告)日：2023-12-21

申请号：US18034377

申请日：2021-10-28

Applicant: SHENZHEN CAPCHEM TECHNOLOGY CO., LTD.

Inventor： Chaowei Cao ,  Chi Wang ,  Qun Chen ,  Shiguang Hu

IPC: H01M10/0567 ,  H01M10/0525

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

Abstract: The present application belongs to the technical field of new energy, in particular to a non-aqueous electrolyte for a lithium ion battery and a lithium ion battery. The non-aqueous electrolyte for a lithium ion battery comprises a non-aqueous organic solvent, a lithium salt, and a spiro compound represented by Structural Formula 1. The compound represented by Structural Formula 1 has the characteristic of sulfonate additives to improve high-temperature storage performance of battery, and also has the characteristic of sulfate additives to improve high-temperature cycle performance of battery. A passivation film is deposited on the surface of positive electrode, and functional group X is further crosslinked to make the coated passivation film more compact and stable, which can effectively improve the electrochemical performance of the electrode, the storage performance and self-discharge performance of the battery.

公开(公告)号：US20170110260A1

公开(公告)日：2017-04-20

申请号：US14655289

申请日：2014-06-26

Applicant: SHENZHEN CAPCHEM TECHNOLOGY CO., LTD.

Inventor： Zhongtian Zheng ,  Yingjie Cao ,  Chaowei Cao ,  Longliang Xue ,  Xiaoxia Xiang

IPC: H01G11/62 ,  H01G11/32 ,  H01G11/60

CPC classification number: H01G11/62 ,  H01G11/32 ,  H01G11/60 ,  Y02E60/13

Abstract: The present invention relates to the electrochemical field, particularly to an electrolyte solute and an electrolyte that are used for a high-voltage supercapacitor, and a high-voltage supercapacitor using the electrolyte. The anion of the electrolyte solute may be one or more selected from tetrafluoroborate, hexafluorophosphate, bis(trifluoromethylsulfonyl) imide, tris (trifluoromethylsulfonyl) methyl and perfluoroalkyl sulfonate, and the cation may be N-methyl-1,4-diazabicyclo[2.2.2]octane ammonium, N,N-dimethyl-1,4-diazabicyclo[2.2.2]octane ammonium, N-methyl-1-azabicyclo[2.2.2] octane ammonium. The high-voltage supercapacitor fabricated by using the electrolyte formulated by the electrolyte solute of the present invention can work stably for a long period of time at a voltage of 2.7 V to 3.2 V, the energy density is greatly increased, the property of high power density is maintained, and the working life is prolonged.

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：US09870874B2

公开(公告)日：2018-01-16

申请号：US14655289

申请日：2014-06-26

Applicant: SHENZHEN CAPCHEM TECHNOLOGY CO., LTD.

Inventor： Zhongtian Zheng ,  Yingjie Cao ,  Chaowei Cao ,  Longliang Xue ,  Xiaoxia Xiang

IPC: H01G9/035 ,  H01G11/62 ,  H01G11/60 ,  H01G11/32

CPC classification number: H01G11/62 ,  H01G11/32 ,  H01G11/60 ,  Y02E60/13

Abstract: The present invention relates to the electrochemical field, particularly to an electrolyte solute and an electrolyte that are used for a high-voltage supercapacitor, and a high-voltage supercapacitor using the electrolyte. The anion of the electrolyte solute may be one or more selected from tetrafluoroborate, hexafluorophosphate, bis(trifluoromethylsulfonyl) imide, tris (trifluoromethylsulfonyl) methyl and perfluoroalkyl sulfonate, and the cation may be N-methyl-1,4-diazabicyclo[2.2.2]octane ammonium, N,N-dimethyl-1,4-diazabicyclo[2.2.2]octane ammonium, N-methyl-1-azabicyclo[2.2.2]octane ammonium. The high-voltage supercapacitor fabricated by using the electrolyte formulated by the electrolyte solute of the present invention can work stably for a long period of time at a voltage of 2.7 V to 3.2 V, the energy density is greatly increased, the property of high power density is maintained, and the working life is prolonged.