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1.发明申请公开(公告)号：US20190067685A1
公开(公告)日：2019-02-28
申请号：US16047985
申请日：2018-07-27
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Zhongsi Zhu , Ze Zhong , Chengdong Sun , Yi Zheng , Lingyun Feng , Hang Zhou , Long Wang
Abstract: The present disclosure provides a negative electrode slurry, a negative electrode plate and an electrochemical energy storage device. The negative electrode slurry comprises a solvent and a solid component dispersed in the solvent. The solid component comprises a negative electrode active material, a water-soluble binder and a dispersant. The negative electrode active material comprises a carbon-type active material. The dispersant comprises an A dispersant and a B dispersant, the A dispersant is a cellulose-type dispersant, the B dispersant is at least one of poly(acrylic acid)-type dispersant, polyacrylate-type dispersant and polyacrylamide-type dispersant. Under a combined effect of the A dispersant and the B dispersant, they can ensure that the electrochemical energy storage device has excellent dynamic performance, which can prevent lithium (or sodium, magnesium and zinc) from precipitating under condition of rapid and large current charging, meanwhile they can ensure that the electrochemical energy storage device has excellent cycle performance.
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公开(公告)号：US11978905B2
公开(公告)日：2024-05-07
申请号：US17746917
申请日：2022-05-17
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Ze Zhong
IPC: H01M4/62
CPC classification number: H01M4/622
Abstract: The present application discloses a secondary battery, an apparatus comprising the secondary battery, a process for the preparation of the secondary battery, and a binder composition. The secondary battery comprises a binder for bonding a first substance and a second substance, the binder comprising a polymer obtained by crosslinking a binder composition, wherein the binder composition comprises a cross-linkable polymer matrix and a cross-linking agent, the cross-linkable polymer matrix comprises one or more of monomer units represented by formula (I), and the cross-linking agent comprises a compound represented by formula (II). The secondary battery provided by the present application has an effectively improved cycle life.
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公开(公告)号：US20220285687A1
公开(公告)日：2022-09-08
申请号：US17745935
申请日：2022-05-17
Applicant: Contemporary Amperex Technology Co., Limited
IPC: H01M4/62 , C08F220/54 , C08F210/02 , C08F216/04
Abstract: The present application discloses a secondary battery, a method for preparing the same, a copolymer and an apparatus. The secondary battery includes a binder for binding a first substance and a second substance, the binder including a copolymer, wherein the copolymer comprises at least a first monomer unit represented by formula (I), a second monomer unit represented by formula (II), and a third monomer unit represented by formula (III): The secondary battery provided by the present application can effectively increase the boding force between the first substance and the second substance by including a specific binder, thereby improving the electrochemical performance of the secondary battery.
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