Ningde Amperex Technology Limited

Xiexue Peng

Jianming Zheng

Chao Tang

Wenqiang Li

Junfei Liu

Bin Wang

Qian Wen

Haiyang Nan

Jiqiong Liu

Jian Liu

An electrolyte includes a compound represented by formula I-A, where A, A, and Aare each independently selected from formula I-B or formula I-C, and at least two of A, A, and Aare formula I-C. In formula I-A, n is selected from integers 1 to 10, and m is selected from 0 or 1. In formula I-B and formula I-C,represents a site at which two adjacent atoms are joined. The electrolyte can significantly improve high-temperature storage performance, cycle performance, and floating charge performance of the electrochemical device.

Electrolyte, electrochemical device, and electronic device

An electrolyte including at least a compound of formula I: A, A, and Aare each independently selected from the following formulas I-A, I-B, I-C, or I-D, and the A, A, and Aare not all I-A: m and k are 0 or 1, and n is integer from 1 to 6. R, R, R, R, R, R, R, R, R, R, R, and Rare selected from hydrogen; substituted or unsubstituted C-Calkylidene groups, C-Calkenylene groups, C-Calkynylidene groups, C-Ccumulative dienyl groups, C-Caryl groups, or C-Calicyclic hydrocarbon groups. Ris selected from substituted or unsubstituted C-Calkyl groups, C-Calkenyl groups, C-Calkynyl groups, C-Ccumulative dienyl groups, C-Caryl groups, C-Calicyclic hydrocarbon groups, or heteroatom-containing functional groups.

Electrolyte, and electrochemical device and electronic device comprising the same

The present application relates to an electrochemical device comprising a separator and an electrolyte, wherein the separator comprises a first porous layer and a second porous layer; and the electrolyte comprises at least one compound containing 2 to 3 cyano groups.

Electrochemical device

An electrolyte including an additive of compound of formula I,

Electrolyte and electrochemical apparatus

The present application relates to an electrolytic solution and an electrochemical device comprising the electrolytic solution. The electrolytic solution comprises a carbonate compound having a silicon-containing functional group, so as to significantly improve the overcharge performance and high-temperature storage performance of an electrochemical device using the electrolytic solution.

Electrolytic solution and electrochemical device

The present application relates to an electrolytic solution and an electrochemical device using the same. The electrolytic solution comprises a cyclic fluorocarbonate, a chain fluorocarbonate and a fluoroether compound, wherein based on the weight of the electrolytic solution, the weight percentage of the cyclic fluorocarbonate is 15 wt % to 80 wt %. The electrolytic solution provided by the present application has high electric conductivity and good electrochemical stability and safety performance, can significantly improve the cycle performance of the battery, and especially meet the demand for long cycle life of a lithium metal battery, and has a very large application value in the lithium metal battery.

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Ningde, China

Xiexue Peng