Water-based zinc ion battery colloidal electrolyte, and preparation method and application thereof

A colloidal electrolyte and zinc-ion battery technology, which is applied in the direction of electrolyte immobilization/gelation, secondary batteries, circuits, etc., to achieve weak corrosion, reduce hydrogen evolution at the negative electrode, and reduce water loss

Active Publication Date: 2019-07-05
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the shortcomings of the existing water-based liquid zinc-ion batteries, the present invention proposes a brand-new battery system—colloidal electrolyte for water-based zinc-ion colloidal batteries and its application for the first time.

Method used

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  • Water-based zinc ion battery colloidal electrolyte, and preparation method and application thereof
  • Water-based zinc ion battery colloidal electrolyte, and preparation method and application thereof
  • Water-based zinc ion battery colloidal electrolyte, and preparation method and application thereof

Examples

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Embodiment 1

[0048] Firstly, a part of untreated kaolin was dissolved in deionized water, and the mixed solution was transferred to a centrifuge tube after continuous stirring for 3 hours under the condition of magnetic stirring. After washing with water, the kaolin was vacuum-dried at 80° C. for 12 hours.

[0049] Weigh zinc sulfate and manganese sulfate of suitable quality and dissolve them in deionized water to prepare a mixed solution of zinc sulfate concentration of 2mol / L and manganese sulfate concentration of 0.1mol / L, then weigh 3g of dry-processed kaolin and add it to 10g of In the liquid electrolyte of zinc sulfate and manganese sulfate, that is, the clay material accounts for 23.07% of the mass concentration of the colloidal electrolyte. After continuous stirring for 1 hour under magnetic stirring conditions, the solution is ultrasonically treated for 10 minutes, and then continuously stirred for 5 hours under magnetic stirring conditions. A colloidal electrolyte with a certain v...

Embodiment 2

[0054] First, take a part of untreated kaolin and attapulgite (mass ratio 1:1) and dissolve it in deionized water. After stirring continuously for 3 hours under magnetic stirring conditions, transfer the mixed solution to a centrifuge tube. After washing with water, mix kaolin and attapulgite The sticks were vacuum-dried at 80°C for 12 hours.

[0055] Take zinc sulfate and manganese sulfate of appropriate quality and dissolve them in deionized water to prepare a mixed solution with a concentration of zinc sulfate of 2 mol / L and a concentration of manganese sulfate of 0.1 mol / L. The clay material accounts for 45% of the mass concentration of the colloidal electrolyte. After stirring continuously for 1 h under the condition, the solution was ultrasonically treated for 10 min, then stirred continuously for 1 h under the condition of magnetic stirring, and aged for 1 h to obtain a colloidal electrolyte with certain viscosity and plasticity.

[0056] The colloidal electrolyte of th...

Embodiment 3

[0058] Firstly, a part of untreated kaolin was dissolved in deionized water, and the mixed solution was transferred to a centrifuge tube after continuous stirring for 3 hours under the condition of magnetic stirring. After washing with water, the kaolin was vacuum-dried at 80° C. for 12 hours.

[0059] Take zinc sulfate and manganese sulfate of suitable quality and dissolve them in deionized water to prepare a mixed solution with a concentration of zinc sulfate of 3mol / L and a concentration of manganese sulfate of 0.3mol / L, then weigh 5g of dry-processed kaolin and add it to 10g of In the mixed solution of zinc sulfate and manganese sulfate, that is, the clay material accounts for 33.33% of the mass concentration of the colloidal electrolyte. After continuous stirring for 1 hour under magnetic stirring conditions, the solution is ultrasonically treated for 10 minutes, then continuously stirred for 1 hour under magnetic stirring conditions, and aged for 10 hours. That is, a coll...

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Abstract

The invention discloses water-based zinc ion battery colloidal electrolyte, and a preparation method and an application thereof. The colloidal electrolyte material is formed by adding a clay materialto liquid electrolyte and uniformly mixing the same. The preparation method comprises the following steps: adding the clay material to conventional liquid electrolyte, thoroughly mixing the same understirring, and performing ageing to obtain uniform and stable colloidal electrolyte. The colloidal electrolyte prepared by the preparation method disclosed by the invention has higher ionic conductivity than liquid electrolyte, a colloidal zinc ion battery has excellent performance, good safety, stable performance and higher specific capacity, maintains excellent cycle stability and shelving performance or the like at high and low current densities, and meets the requirements of the water-based zinc ion energy storage technology with high energy density and long life, thereby having a broad application development space.

Description

technical field [0001] The invention belongs to the field of water-based zinc-ion batteries, and relates to a colloidal electrolyte material for a water-based zinc-ion battery, a preparation method and an application. Background technique [0002] As an electrochemical energy storage device that occupies a dominant position in society, lithium-ion batteries have achieved good application prospects in portable electronic products and electric vehicles. However, due to the high cost of lithium-ion batteries due to the lack of metal lithium resources, the large-scale application of lithium-ion batteries is facing severe challenges. Zinc-ion battery is a new type of high-safety energy storage battery system following lithium-ion batteries. It uses metal zinc negative electrodes and aqueous electrolytes with unique high safety, low toxicity and chemical inertness. Rechargeable aqueous zinc-ion batteries are non-toxic, and the abundance of zinc in the world is high, which provide...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/36
CPCH01M10/36H01M2300/0085Y02E60/10
Inventor 周江梁叔全高嘉蔚解雪松刘存鑫邓灿彬
Owner CENT SOUTH UNIV
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