Preparation and application of zinc negative electrode material of novel aqueous zinc ion battery

A zinc ion battery and zinc negative electrode technology, which is applied in electrode manufacturing, battery electrode, secondary battery manufacturing, etc., can solve the problems of restricting the development of economical water-based zinc ion batteries, high production costs, complicated procedures, etc., and achieve long-term improvement. Effect of stability and lifetime, high dielectric constant, uniform ion flux

Pending Publication Date: 2022-04-15
QILU UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Unfortunately, when metallic zinc is used as the anode, problems such as uncontrollable dendrite growth and side reactions and hydrogen evolution during repeated cycling may lead to internal short circuits of the battery and lead to damage, which poses a serious threat to its commercial application. challenge
In order to overcome these obstacles, car

Method used

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  • Preparation and application of zinc negative electrode material of novel aqueous zinc ion battery
  • Preparation and application of zinc negative electrode material of novel aqueous zinc ion battery
  • Preparation and application of zinc negative electrode material of novel aqueous zinc ion battery

Examples

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Embodiment 1

[0025] This embodiment provides a zinc negative electrode material for a novel aqueous zinc-ion battery, comprising the following steps:

[0026] Put 0.1g of polyvinyl chloride powder and 0.1g of zinc trifluoromethanesulfonate powder in a 15mL glass bottle, add 3g of N,N-dimethylformamide solvent, and stir in an oil bath at 85°C for 2 hours , cooling down at room temperature to form a uniform polymer coating solution, which is stored in vacuum and ready for use.

Embodiment 2

[0028] This embodiment provides a zinc negative electrode material for a novel aqueous zinc-ion battery, comprising the following steps:

[0029] Put 0.2g of polyvinyl chloride powder and 0.1g of zinc trifluoromethanesulfonate powder in a 15mL glass bottle, add 3g of N,N-dimethylformamide solvent, and stir in an oil bath at 85°C for 2 hours , cooling down at room temperature to form a uniform polymer coating solution, which is stored in vacuum and ready for use.

Embodiment 3

[0031] This embodiment provides a zinc negative electrode material for a novel aqueous zinc-ion battery, comprising the following steps:

[0032] Put 0.1g of polyvinyl chloride powder and 0.1g of zinc trifluoromethanesulfonate powder in a 15mL glass bottle, add 6g of N,N-dimethylformamide solvent, and stir in an oil bath at 85°C for 2 hours , cooling down at room temperature to form a uniform polymer coating solution, which is stored in vacuum and ready for use.

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Abstract

The invention relates to preparation and application of a zinc negative electrode material of a novel aqueous zinc ion battery. The preparation method of the zinc negative electrode material comprises the following steps: dissolving polyvinyl chloride and zinc trifluoromethanesulfonate in a polar solvent at room temperature to form a precursor solution for preparing the electrode material; and blade-coating the precursor solution on the surface of a zinc metal substrate by using a simple blade-coating method to prepare the novel zinc negative electrode. A chlorine atom group in polyvinyl chloride can become an active site for guiding zinc deposition, uniform zinc deposition is induced, corrosion reaction is reduced, meanwhile, dendritic crystal formation can be inhibited, coulombic efficiency is improved, the electrochemical performance of a battery is improved, and the cycle life of the battery is prolonged.

Description

technical field [0001] The invention belongs to the field of water system zinc ion batteries, in particular to a preparation method and application of a zinc negative electrode material of a novel water system zinc ion battery. Background technique [0002] Rechargeable aqueous Zn-ion batteries have attracted much attention due to their high theoretical capacity, low redox potential, high abundance, and intrinsic safety. Unfortunately, when metallic zinc is used as the anode, problems such as uncontrollable dendrite growth and side reactions and hydrogen evolution during repeated cycling may lead to internal short circuits of the battery and lead to damage, which poses a serious threat to its commercial application. challenge. In order to overcome these obstacles, carbon materials with conductive network structures such as graphene oxide, carbon nanotubes, and carbon fibers have been proposed as zinc anode materials. Although these carbon materials can partially inhibit den...

Claims

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Application Information

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IPC IPC(8): H01M4/02H01M4/04H01M4/60H01M10/04
CPCH01M4/602H01M4/04H01M4/02H01M10/04Y02P70/50
Inventor 王金国林显森葛林恒刘伟良乔从德姚金水张献
Owner QILU UNIV OF TECH
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