Ningde Amperex Technology Limited

Wenqiang Li

Chao Tang

Shuirong Zhang

Jianming Zheng

Juan Ma

Qian Wen

Mingming Guan

Chunrui Xu

Jian Liu

Junfei Liu

Xiexue Peng

Jianyu Liu

Yali Xiong

Xiangling Zheng

An electrolyte includes a compound of formula 1: Rand Rare each independently selected from H, halogen atom, a substituted or unsubstituted Calkyl group, a substituted or unsubstituted Ccycloalkyl group, a substituted or unsubstituted Calkenyl group, a substituted or unsubstituted Calkynyl group, a substituted or unsubstituted Calkoxy group, a substituted or unsubstituted Caryl group, a substituted or unsubstituted Cheteroaryl group, or any combination thereof. R is selected from a substituted or unsubstituted Calkyl group, a substituted or unsubstituted Ccycloalkyl group, a substituted or unsubstituted Calkenyl group, a substituted or unsubstituted Calkynyl group, a substituted or unsubstituted Calkoxy group, a substituted or unsubstituted Caryl group or a substituted or unsubstituted Cheteroaryl group, a substituted or unsubstituted Cheterocycloalkyl group, a butyrolactam group, or any combination thereof.

Electrolyte and electrochemical apparatus using same

An electrolytic solution includes a compound containing a —CN functional group and a compound containing a silicon functional group. M is C or Si. R, R, and Rare each independently selected from a substituted or non-substituted C-Calkylene group, a substituted or non-substituted C-Calkenylene group, an O—R group, an R—S—R group or an R—O—R group, Rand R are each independently selected from a substituted or non-substituted C-Calkylene group. n is 0 or 1. Ris H, fluorine, a cyano group, a substituted or non-substituted C-Calkyl group, a substituted or non-substituted C-Calkenyl group, an O—Rgroup, an R—S—Rgroup, or an R—O—Rgroup. Ris a substituted or non-substituted C-Calkylene group, and Ris a substituted or non-substituted C-Calkyl group.

Electrolytic solution and electrochemical device using the same

An electrolytic solution includes the compound of Formula I and a carboxylate compound: The electrochemical device prepared with the electrolytic solution has reduced storage impedance, and improved post-storage swelling, overcharge performance and hot box performance.

Electrolytic solution, and electrochemical device using the same

The present application relates to an electrolytic solution and an electrochemical device using same. The electrolytic solution of the present application comprises a compound containing a &#x2014;CN functional group and a compound containing a P&#x2014;O bond. By introducing the compound containing a &#x2014;CN functional group and the compound containing a P&#x2014;O bond into the electrolytic solution, an active material can be better protected, thereby effectively improving floatation performance and nailing performance of a battery, and cycle impedance of the battery.

Electrolyte solution and electrochemical device using the same

An electrolyte including an additive of compound of formula I,

Electrolyte and electrochemical apparatus

The present application relates to an electrolyte and an electrochemical device. The electrolyte comprises a cesium salt and a nitrile compound. The electrolyte provided in the present application improves rapid charge-discharge performance and cycle performance of a lithium-ion battery while improving the problem of battery gassing during continuous charge.

Electrolyte and electrochemical device

An electrolyte, including a fluorine-containing phosphate ester and a carboxylate ester, wherein the fluorine-containing phosphate ester is represented by Formula 1: R, Rand Rare each independently selected from hydrogen, a C-Calkyl group, C-Calkoxy group, C-Chaloalkyl group, C-Chaloalkoxy group, C-Cphosphate ester group, or C-Cmono- or multiple-carbonate ester group, wherein at least one of R, Rand Rcomprises a fluorine atom. The weight ratio of the fluorine-containing phosphate ester to the carboxylate ester is 0.001-0.5.

The present application provides an electrolyte and a secondary battery comprising the same. The electrolyte is prepared by adding a siloxane compound, a nitrile compound and an electrolyte salt with different contents into an organic solvent.

Electrolyte and secondary battery containing the same

The present application relates to an electrolyte, an electrochemical device and an electronic device comprising the same. The electrolyte of the present application includes a cyclic N-containing sulfonyl-compound and at least one of vinylene carbonate, fluoroethylene carbonate, lithium tetrafluoroborate, lithium difluoro(oxalato)borate or lithium difluorophosphate. The electrolyte of the present application may further include a sulfur-oxygen double bond containing compound and a silicon-containing carbonate. Compared with the prior art, using the electrolyte provided by the present application can effectively improve the high-temperature storage, cycle performance and overcharge performance of an electrochemical device, such as a lithium-ion battery.

Electrolyte, electrochemical device and electronic device containing the same

The present application provides an electrolyte and an electrochemical device. The electrolyte according to the present application comprises a carboxylate, a barbituric acid compound and a nitrile compound. Adding a barbituric acid compound and a nitrile compound of particular structure to an electrolyte containing a carboxylate solvent can significantly improve the rate performance of an electrochemical device, and mitigate capacity loss after storage at room temperature, and cycle fading and gas generation at high-temperature of the electrochemical device.

The present application relates to an electrolytic solution and an electrochemical device containing the electrolytic solution. The electrolytic solution of the present invention comprises a compound having a &#x2014;CN functional group, and is capable of significantly improving the floating-charge performance, the increased impedance accompanying the long-term cycle test, and the thermal impact performance of an electrochemical device using the electrolytic solution.

Growing community of inventors

Ningde, China

Wenqiang Li