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A kind of ionic liquid electrolyte and lithium battery

A technology of ionic liquid and electrolyte, applied in the field of ionic liquid electrolyte, can solve the problems of limiting the photoelectric conversion performance of electrolyte DSC

Active Publication Date: 2021-04-09
BEIJING WELION NEW ENERGY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, the current research on ionic liquid electrolytes usually revolves around alkyl-substituted imidoxine cations, especially 1,3-disubstituted imidazolium ionic liquids, which largely limits the improvement of the photoelectric conversion performance of such electrolytes in DSC.

Method used

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  • A kind of ionic liquid electrolyte and lithium battery
  • A kind of ionic liquid electrolyte and lithium battery
  • A kind of ionic liquid electrolyte and lithium battery

Examples

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Effect test

Embodiment 1

[0044] Under room temperature, with 20wt% organic solvent (wherein, organic solvent is prepared by mixing dimethyl carbonate (DMC), diethyl carbonate (DEC) and ethylene carbonate (EC), DMC:DEC:EC volume ratio is 1:1:1), 20wt% LiPF 6 and 60wt% of Py1 were evenly mixed to obtain electrolyte sample A1.

Embodiment 2

[0046] At room temperature, 20wt% organic solvent (DMC:DEC:EC volume ratio is 1:1:1), 20wt% LiPF 6 and 60wt% of Py2 were mixed uniformly to obtain electrolyte sample A2.

Embodiment 3

[0048] At room temperature, 20wt% organic solvent (DMC:DEC:EC volume ratio is 1:1:1), 20wt% LiPF 6 and 30wt% of Py1 and 30wt% of Py2 were mixed uniformly to obtain electrolyte sample A3.

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Abstract

The invention discloses an ionic liquid electrolyte and a lithium battery using the ionic liquid electrolyte, belonging to the related technical field of lithium batteries. The ionic liquid electrolyte includes an ionic liquid, and the ionic liquid is a pyrrolidine ionic liquid containing a long polyether chain segment , can effectively improve the conductivity of the ionic liquid electrolyte, and the preferred voltage window of the pyrrolidine-based ionic liquid electrolyte containing carbonate groups is significantly improved, and the battery using the ionic liquid electrolyte still has Higher capacity retention.

Description

【Technical field】 [0001] The invention belongs to the technology related to lithium batteries, in particular to an ionic liquid electrolyte and a lithium battery using the ionic liquid electrolyte. 【Background technique】 [0002] Today, when energy and the environment are of great concern, energy storage batteries have great development advantages. Lithium batteries are an ideal choice for energy storage batteries because of their high voltage, high specific energy, wide operating temperature, long life, The advantages of low self-discharge rate and no memory effect have been widely used in small civilian electrical appliances, such as mobile phones, cameras, notebook computers, etc., but there are still many key issues that need to be solved before they can be used more widely. Safety, environmental friendliness, and at the same time need to improve its performance, reduce costs, etc. [0003] Improper use of electrolyte in lithium batteries may cause environmental problem...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/0566H01M10/0568H01M10/052
CPCY02E60/10
Inventor 李久铭黄杰俞会根
Owner BEIJING WELION NEW ENERGY TECH CO LTD
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