Electrolyte suitable for zinc polyaniline secondary batteries

A secondary battery and electrolyte technology, applied in the direction of alkaline storage batteries, etc., can solve the problems of short cycle life and achieve the effects of reducing hydrogen evolution corrosion, smooth and bright surface, and easy preparation

Inactive Publication Date: 2019-07-12
YANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an electrolyte suitable for zinc polyaniline secondary batteries, aiming to solve the problem of short cycle life of zinc polyaniline secondary batteries with weakly acidic electrolytes due to the formation of zinc dendrites. The electrolyte can significantly inhibit the growth of zinc dendrites during the charge and discharge process of zinc polyaniline secondary batteries with weak acid electrolyte

Method used

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  • Electrolyte suitable for zinc polyaniline secondary batteries
  • Electrolyte suitable for zinc polyaniline secondary batteries
  • Electrolyte suitable for zinc polyaniline secondary batteries

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] 1. Preparation of zinc sheet in zinc polyaniline secondary battery:

[0013] The purity of the zinc sheet is 99.99%, and it is cut to 6×8 cm according to the requirements of the battery 2 The film was polished with metallographic sandpaper to remove surface oxides, then washed with secondary water, dried with filter paper, and then dried.

[0014] 2. Preparation of zinc polyaniline secondary battery electrolyte:

[0015] A certain amount of ZnCl 2 and NH 4 Dissolve Cl in double-distilled water, then add one or more of nonionic surfactants and anionic surfactants, then add fumed silica, and adjust the pH value of the mixed solution to 4.0 with hydrochloric acid or sodium hydroxide After ~6.0, stir continuously with a magnetic stirrer for more than 4 h.

[0016] Electrolyte, containing 0.2 M ZnCl 2 , 1.0 M NH 4 Cl, 0.02 ppm triton x-100, 1 ppb sodium dodecylbenzenesulfonate, fumed silica with a mass percentage of 1%, and the pH value of the electrolyte is 4.3.

[...

Embodiment 2

[0025] The solvent of the electrolyte is water, and the electrolyte is composed of ZnCl 2 , NH 4 The mixed solution of Cl, nonionic surfactant, anionic surfactant, gas phase silica and water is obtained after adjusting the pH value to 4.0 with hydrochloric acid or sodium hydroxide; the content of each component in the electrolyte is 2.0 mol / l ZnCl 2 , 0.5mol / l NH 4 Cl, 0.02 ppm of nonionic surfactant, 3ppb of anionic surfactant and 6% by mass of fumed silica.

[0026] The nonionic surfactant is octylphenol polyoxyethylene ether and nonylphenol polyoxyethylene ether in any proportion. The anionic surfactant is polyacrylamide, Remibond A and sodium dodecylbenzenesulfonate in any proportion.

Embodiment 3

[0028] The solvent of the electrolyte is water, and the electrolyte is composed of ZnCl 2 , NH 4 The mixed solution of Cl, nonionic surfactant, anionic surfactant, gas phase silica and water is obtained after adjusting the pH value to 6.0 with hydrochloric acid or sodium hydroxide; the content of each component in the electrolyte is 2.0 mol / l ZnCl 2 , 2.0 mol / l NH 4 Cl, 500 ppm of nonionic surfactant, 2ppb of anionic surfactant and 3% by mass of fumed silica.

[0029] The nonionic surfactant is oleyl alcohol; the anionic surfactant is polyacrylamide and sodium cetyl sulfonate, and the weight ratio of polyacrylamide and sodium cetyl sulfonate is half and half.

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Abstract

The invention discloses an electrolyte suitable for zinc polyaniline secondary batteries in the technical field of batteries. The solvent of the electrolyte is water, the electrolyte includes the following components 0.2-2.0 mol/l of ZnCl2, 0.5-2.0 mol/l NH4Cl, 0.02-500 ppm of a nonionic surfactant, 1-3 ppb of an anionic surfactant and gas-phase silicon dioxide with the mass percentage of 1-6%, and the pH value is 4.0-6.0. The electrolyte forms a zinc polyaniline secondary battery with a zinc sheet, a diaphragm and polyaniline loaded on a carbon collector, and the result of the zinc sheet after charging and discharging of the secondary battery shows that the zinc sheet with the surface being smooth and flat may form a dense protective film, thereby effectively suppressing the formation ofzinc dendrites. The electrolyte disclosed by the invention has the advantages of good conductivity and ion transfer ability, good stability, safety, non-toxicity, green and environmental protection and easy preparation.

Description

technical field [0001] The invention relates to the technical field of production of zinc polyaniline secondary batteries, especially the technology of its electrolyte. [0002] technical background [0003] With the increasing demand for energy and the continuous improvement of social and economic sustainable development, green energy with high performance and low cost has attracted more and more attention. The abundance of zinc in the earth's crust is as high as nearly 1.5%, and it is non-toxic and cheap. The electrode potential of zinc (-0.763V vs SHE) is relatively low, and it is often selected as a battery anode material (such as zinc-manganese batteries, zinc-nickel batteries, zinc-air batteries, etc.). Using zinc as the anode of the secondary battery can avoid environmental pollution to a certain extent, and the recovery process is simple. [0004] Since conductive polyaniline has been paid attention to by people in the 1980s, there have been many reports on zinc pol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/26
CPCH01M10/26Y02E60/10
Inventor 李冰朱伟王楚秦福阚锦晴
Owner YANGZHOU UNIV
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