公开(公告)号：US20200185772A1

公开(公告)日：2020-06-11

申请号：US16342400

申请日：2017-07-18

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Lu MIAO ,  Chunhua HU ,  Tiancheng YI ,  Yao JIANG ,  Chengdu LIANG

IPC: H01M10/0567 ,  H01G11/06 ,  H01G11/64 ,  H01M10/0525 ,  H01M6/16

Abstract: The present disclosure relates to the field of energy storage materials, and particularly, to an electrolyte and an electrochemical device. The electrolyte includes an additive A and an additive B, the additive A is 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, and the additive B is at least one halogenated cyclic carbonate compound. The electrochemical device includes the above electrolyte. The electrolyte of the present disclosure can effectively passivate surface activity of the positive electrode material, inhibit oxidation of the electrolyte, and effectively reduce gas production of the battery, while an anode SEI film can be formed to avoid a contact between the anode and the electrode and thus to effectively reduce side reactions.

公开(公告)号：US20190326635A1

公开(公告)日：2019-10-24

申请号：US16373032

申请日：2019-04-02

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Yao JIANG ,  Chunhua HU ,  Tiancheng YI ,  Lu MIAO ,  Chengdu LIANG

IPC: H01M10/0567 ,  H01M10/0525 ,  H01G11/64 ,  H01G11/60

Abstract: This application provides an electrolyte and an electrochemical device, in which the electrolyte comprises an additive A and an additive B, wherein the additive A is present in an amount of 0.01% to 10% by mass in the electrolyte and the additive B is present in an amount of 0.1% to 10% by mass in the electrolyte and the electrolyte has a conductivity of 6 mS/cm to 10 mS/cm at 25° C. The present invention can improve the cycle performance and storage performance of the electrochemical device, in particular, improve the cycle performance and storage performance of the electrochemical device under high temperature and high voltage conditions while keeping the low temperature performance.

公开(公告)号：US20190326633A1

公开(公告)日：2019-10-24

申请号：US16355639

申请日：2019-03-15

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Tiancheng YI ,  Chunhua HU ,  Zijun XU ,  Lu MIAO ,  Chengdu LIANG

IPC: H01M10/0567 ,  H01M10/0569 ,  H01M10/0525

Abstract: This application provides an electrolyte and an electrochemical device, in which the electrolyte comprises an additive A and an additive B, wherein the additive A is present in an amount of 0.001% to 10% by mass in the electrolyte and the additive B is present in an amount of 0.1% to 10% by mass in the electrolyte and the electrolyte has a conductivity of 4 mS/cm to 12 mS/cm at 25° C. The present invention can improve the cycle performance and storage performance of the electrochemical device, in particular, improve the cycle performance and storage performance of the electrochemical device under high temperature and high voltage conditions while keeping the low temperature performance.

公开(公告)号：US20210280910A1

公开(公告)日：2021-09-09

申请号：US16342852

申请日：2017-07-18

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Yao JIANG ,  Chunhua HU ,  Tiancheng YI ,  Lu MIAO ,  Chengdu LIANG

IPC: H01M10/0567 ,  H01M10/0525 ,  H01G11/64 ,  C07D295/15 ,  C07D317/38 ,  C07D327/10

Abstract: The present disclosure relates to the field of energy storage materials, and particularly, to an electrolyte and an electrochemical device. The electrolyte includes an additive A and an additive B, the additive A is 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, and the additive B is at least one unsaturated bond-containing cyclic carbonate compound. The electrochemical device includes the above electrolyte. The electrolyte of the present disclosure can effectively passivate surface activity of the positive electrode material, inhibit oxidation of the electrolyte, and effectively reduce gas production of the battery, while an anode SEI film can be formed to avoid a contact between the anode and the electrode and thus to effectively reduce side reactions.

公开(公告)号：US20200127330A1

公开(公告)日：2020-04-23

申请号：US16388216

申请日：2017-07-18

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Tiancheng YI ,  Chunhua HU ,  Yao JIANG ,  Lu MIAO ,  Chengdu LIANG

IPC: H01M10/0567 ,  C07D239/04 ,  C07D241/04 ,  C07D251/04 ,  H01M10/0525 ,  H01M6/16 ,  H01G11/06 ,  H01G11/64 ,  C07D327/04 ,  C07D317/34

Abstract: An electrolyte and an electrochemical device, which relates to the field of energy storage materials. The electrolyte includes an additive A, an additive B and an additive C, the additive A selected from a group consisting of multi-cyano six-membered N-heterocyclic compounds represented by Formula I-1, Formula I-2 or Formula I-3, and combinations thereof, the additive B is at least one sulfonate compound, and the additive C is at least one halogenated cyclic carbonate compound. The electrochemical device includes the above electrolyte. The electrolyte of the present disclosure can effectively passivate the surface activity of the positive electrode material, inhibit the oxidation of the electrolyte, and effectively reduce gas production of a battery, meanwhile the electrolyte can be also adsorbed catalytically active of the graphite surface to form a more stable SEI film, thereby effectively reducing side reactions