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Electrolyte and lithium battery

An electrolyte and lithium battery technology, applied in the field of electrochemistry, can solve the problems of low charging and discharging times, hidden safety hazards, etc., and achieve the effects of increasing capacity, improving overall performance, and inhibiting the growth of lithium dendrites

Pending Publication Date: 2021-12-07
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Another object of the present invention is to provide an electrolyte and a lithium battery, which can at least solve the problems of low charge and discharge times and potential safety hazards caused by the growth of lithium dendrites in lithium metal batteries

Method used

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  • Electrolyte and lithium battery
  • Electrolyte and lithium battery
  • Electrolyte and lithium battery

Examples

Experimental program
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Effect test

Embodiment 1

[0043] This example is used to illustrate the electrolyte solution disclosed in the present invention.

[0044] In the glove box (H 2 O2 6 ); Non-aqueous organic solvent is: ethylene carbonate (EC): the mixed solvent of dimethyl carbonate (DMC)=1:1 (v:v);

[0045] Add the compound represented by formula 1 with a mass fraction of 1.0 wt% to the base electrolyte, and stir evenly to obtain electrolyte 1.

Embodiment 2

[0047] The electrolyte solution was configured according to the method of Example 1, except that the compound represented by formula 1 was added to the base electrolyte solution with a mass fraction of 0.5 wt%, and the electrolyte solution 2 was obtained after uniform stirring.

Embodiment 3

[0049] The electrolyte solution was configured according to the method of Example 1, except that the compound represented by formula 1 with a mass fraction of 2 wt % was added to the base electrolyte solution, and the electrolyte solution 3 was obtained after uniform stirring.

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Abstract

The invention provides an electrolyte, and the electrolyte comprises a lithium salt, a non-aqueous organic solvent and an additive, wherein the general formula of the additive is R1-R2, R1 is a boron atom of R2, and one carbon atom on a pyridine ring of R1 is connected. The problems of low charging and discharging times, potential safety hazards and the like caused by the growth of the lithium dendrites in the lithium battery can be solved at least.

Description

technical field [0001] The invention relates to the field of electrochemistry, and more specifically, to an electrolyte solution and a lithium battery. Background technique [0002] With the development of portable electronic devices and electric vehicles, conventional lithium-ion batteries (LIBs) have found it difficult to meet the demands of high energy density. Among many battery technologies, lithium metal anode batteries (LMBs) are considered to be the most promising one due to their ultra-high theoretical specific capacity (3860mAh / g) and lowest electrochemical potential (-3.04V vs. RHE). kind. However, the commercial application of lithium metal batteries is severely limited due to the problems of easy formation of dendrites and unstable solid electrolyte interface (SEI), resulting in low Coulombic efficiency, transition metal lithium and electrolyte consumption. Moreover, the continuous growth of lithium dendrites poses serious safety concerns. Therefore, there is...

Claims

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Application Information

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IPC IPC(8): H01M10/0567H01M10/052
CPCH01M10/0567H01M10/052Y02E60/10
Inventor 马建民王华平
Owner HUNAN UNIV
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