公开(公告)号：US20200176817A1

公开(公告)日：2020-06-04

申请号：US16624192

申请日：2017-07-18

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Shushi DOU ,  Chunhua HU ,  Tiancheng YI ,  Jian YAN ,  Chengdu LIANG ,  Li HAO

IPC: H01M10/0567 ,  C07C255/04 ,  H01M10/0525

Abstract: The present application relates to the field of energy storage materials, and particularly, to an electrolytic solution and a battery using the electrolytic solution. The electrolytic solution of the present application contains an additive, the additive including a multi-cyano compound represented by formula (I). The multi-cyano compound of the present application has a stronger complexation with a transition metal on the surface of a positive electrode material, and therefore a protective film can be formed on the surface of the positive electrode material, and the dissolution of the transition metal is effectively suppressed; the surface activity of the positive electrode material is reduced, thereby suppressing side reactions, such as the decomposition of the electrolytic solution on the surface of the positive electrode material; and the cycle performance and storage performance of a battery under wide range of working voltage and wide range of operating temperature conditions are thus improved.

公开(公告)号：US20200052332A1

公开(公告)日：2020-02-13

申请号：US16343326

申请日：2017-07-18

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Tiancheng YI ,  Chunhua HU ,  Li HAO ,  Yingjie ZHAN ,  Chengdu LIANG

IPC: H01M10/0567 ,  H01M10/0525

Abstract: The present disclosure relates to the field of energy storage materials, and particularly, to an electrolyte and a battery using the electrolyte. The electrolyte contains an additive selected from a group consisting of multi-cyano six-membered N-heterocyclic compounds represented by Formula I-1, Formula I-2 and Formula I-3, and combinations thereof. The addition of the multi-cyano six-membered N-heterocyclic compound as an additive in the electrolyte of the present disclosure can effectively passivate surface activity of the positive electrode material and inhibit oxidation of the electrolyte. The battery using the electrolyte according the present disclosure has good cycle performance at high temperature and high voltage and good storage performance, while gas production of the battery is reduced.

公开(公告)号：US20190198840A1

公开(公告)日：2019-06-27

申请号：US16211552

申请日：2018-12-06

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Huafeng HUANG ,  Qisen HUANG ,  Shiwen WANG ,  Chengdu LIANG

IPC: H01M2/16 ,  H01M2/14

CPC classification number: H01M2/1686 ,  H01M2/145 ,  H01M2/1646 ,  H01M2/1653 ,  H01M10/0525 ,  H01M10/4235

Abstract: The present disclosure relates to the field of energy storage, and in particular to a separator, a method for preparing the separator, and an electrochemical device including the separator. The separator includes a porous substrate. At least one of a porous inorganic layer and an organic particle coating layer is provided on at least one surface of the porous substrate, and a composite layer is provided on at least one surface of the porous substrate. The composite layer includes a porous inorganic layer and an organic particle coating layer sequentially disposed on the surface of the porous substrate. The porous inorganic layer includes an inorganic dielectric material containing no binder. The organic particle coating layer is a coating discontinuously distributed on the porous inorganic layer. The composite layer has a mass of 0.2 g/m2 to 8.4 g/m2 per unit area.

公开(公告)号：US20190190006A1

公开(公告)日：2019-06-20

申请号：US16152199

申请日：2018-10-04

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Ying WANG ,  Yongsheng GUO ,  Chengdu LIANG ,  Xiqing WANG ,  Shuojian SU ,  Qian LIU

IPC: H01M4/136 ,  H01M4/58 ,  H01M4/62 ,  H01M10/0525

CPC classification number: H01M4/136 ,  H01M4/5825 ,  H01M4/622 ,  H01M4/623 ,  H01M4/625 ,  H01M10/0525 ,  H01M10/054 ,  H01M2004/021 ,  H01M2004/028

Abstract: The present disclosure provides a positive electrode plate and an electrochemical battery. The positive electrode plate comprises a positive electrode current collector and a positive electrode film. The positive electrode film is provided on the positive electrode current collector and comprises a positive electrode active material and a binder. The positive electrode active material comprises a prussian blue analogue material, the binder is an oil-soluble binder, an area density of the positive electrode film is 5 mg/cm2˜30 mg/cm2. In the positive electrode film of the present disclosure, the prussian blue analogue material is used together with the oil-soluble binder, and the area density of the positive electrode film is controlled within a certain range, so that introduction of the water molecule can be reduced during the preparation process and coating process of a positive electrode slurry, and cycle performance of the electrochemical battery can be improved.