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High-temperature-resistant aqueous zinc ion battery electrolyte as well as preparation method and application thereof

A zinc-ion battery, high temperature-resistant technology, applied in the field of electrochemistry, can solve the problems of poor cycle life, fast performance decay, instability, etc., and achieve the effect of long cycle life, high specific capacity, and prolong battery life

Pending Publication Date: 2022-02-11
HUBEI UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to improve the defects of the existing water system zinc ion battery such as fast performance decay, poor cycle life and instability under high temperature conditions, to provide a high temperature resistant water system zinc ion battery electrolyte and its preparation method and application, especially using the Application of electrolyte in the preparation of high temperature resistant aqueous zinc ion battery

Method used

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  • High-temperature-resistant aqueous zinc ion battery electrolyte as well as preparation method and application thereof
  • High-temperature-resistant aqueous zinc ion battery electrolyte as well as preparation method and application thereof
  • High-temperature-resistant aqueous zinc ion battery electrolyte as well as preparation method and application thereof

Examples

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Effect test

Embodiment 1

[0053] A kind of high-temperature-resistant aqueous zinc-ion battery electrolyte of the present embodiment is made up of A component, B component, C component, D component and water-soluble zinc salt; A component is acetonitrile (CH 3 CN); B component is dimethyl sulfoxide; C component is ultrapure water; D component is trimethyl phosphate; the volume ratio of A component, B component, C component, D component is 6 : 2: 1: 1; the water-soluble zinc salt is zinc trifluoromethanesulfonate (Zn(CF 3 SO 3 ) 2 ), the concentration of zinc ions in the electrolyte is 1mol L -1 .

[0054] In this embodiment, the above-mentioned high-temperature-resistant aqueous zinc-ion battery electrolyte is prepared by the following method, and the steps are as follows:

[0055] Mix component A, component B, component C and component D evenly according to the proportion, then add water-soluble zinc salt, stir until completely dissolved, and obtain the high-temperature-resistant water-based zinc-...

Embodiment 2

[0057] A kind of high-temperature-resistant aqueous zinc-ion battery electrolyte of the present embodiment is made up of A component, B component, C component, D component and water-soluble zinc salt; A component is made of acetonitrile (CH 3 CN) and adiponitrile; B component is dimethyl sulfoxide; C component is ultrapure water; D component is trimethyl phosphate; A component, B component, C component, D component The volume ratio is 6:2:1:1; adiponitrile accounts for 10% of the total volume of the electrolyte; the water-soluble zinc salt is zinc trifluoromethanesulfonate (Zn(CF 3 SO 3 ) 2 ), the concentration of zinc ions in the electrolyte is 1mol L -1 .

[0058] In this embodiment, the above-mentioned high-temperature-resistant aqueous zinc-ion battery electrolyte is prepared by the following method, and the steps are as follows:

[0059] Mix component A, component B, component C and component D evenly according to the proportion, then add water-soluble zinc salt, stir...

Embodiment 3

[0061] A kind of high-temperature-resistant aqueous zinc-ion battery electrolyte of the present embodiment is made up of A component, B component, C component, D component and water-soluble zinc salt; A component is acetonitrile (CH 3 CN); B component is composed of dimethyl sulfoxide and N,N-dimethylformamide; C component is ultrapure water; D component is trimethyl phosphate; A component, B component, C The volume ratio of component and D component is 6:2:1:1; the volume ratio of dimethyl sulfoxide to N,N-dimethylformamide is 2:1; the water-soluble zinc salt is Zinc trifluoromethanesulfonate (Zn(CF 3 SO 3 ) 2 ), the concentration of zinc ions in the electrolyte is 1mol L -1 .

[0062] In this embodiment, the above-mentioned high-temperature-resistant aqueous zinc-ion battery electrolyte is prepared by the following method, and the steps are as follows:

[0063] Mix component A, component B, component C and component D evenly according to the proportion, then add water-s...

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Abstract

The invention discloses a high-temperature-resistant aqueous zinc ion battery electrolyte as well as a preparation method and application thereof, and belongs to the technical field of electrochemistry. The electrolyte comprises a component A, a component B, a component C, a component D and a water-soluble zinc salt, wherein the component A is a nitrile solvent; the component B is a sulfoxide solvent and / or an amide solvent; the component C is solvent water; the component D is a phosphorus liquid flame retardant; the volume ratio of the component A to the component B to the component C to the component D is VA: VB: VC: VD, wherein VA is greater than 0 and less than 10, VB is greater than 0 and less than 10, VC is greater than 0 and less than 10, and VD is greater than 0 and less than 10; the volume ratio of the component A to the component B to the component C to the component D is preferably 6: 2: 1: 1 or 5: 2: 2: 1. The high-temperature-resistant aqueous zinc ion battery which can normally operate at the high temperature of 100 DEG C and has excellent chemical properties such as relatively high specific capacity, relatively long cycle life, safety and high efficiency is constructed by using the high-temperature electrolyte.

Description

technical field [0001] The invention belongs to the technical field of electrochemistry, and in particular relates to a high-temperature-resistant aqueous zinc-ion battery electrolyte and a preparation method and application thereof. Background technique [0002] As the non-renewable energy that can be used directly on the earth is gradually exhausted, the demand for clean energy in modern society is increasing. In recent years, countries around the world have vigorously developed wind power generation, tidal power generation, solar power generation and other power generation technologies using renewable energy. [0003] However, because these power generation technologies represented by wind power generation have problems such as unstable power generation time and unsustainable power supply, it is necessary to equip a large number of energy storage devices to collect the generated energy so that it can output power stably to the maximum extent. Especially for some off-grid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/36H01M10/38H01M10/39
CPCH01M10/36H01M10/39H01M10/38Y02E60/10Y02P70/50
Inventor 万厚钊陈鑫刘鑫秦晨晨王浩马国坤汪汉斌张军
Owner HUBEI UNIV
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