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Polymer rechargeable zinc ion battery

A zinc-ion battery and polymer technology, applied in battery electrodes, alkaline storage batteries, circuits, etc., can solve problems such as high sealing requirements, battery performance degradation, liquid leakage and oxidation crystallization, and achieve strong sealing effect and not easy to lose Water, the effect of long storage time

Active Publication Date: 2012-09-19
SHENZHEN CITY THROUGH SCI & TECH OF NEW ENERGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is that the existing rechargeable zinc-ion battery has high requirements on sealing, and it is prone to liquid leakage and oxidation crystallization, which will lead to a decrease in battery performance.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Stir and mix manganese dioxide, conductive agent acetylene black and binder PVDF (polydenetetrafluoroethylene) according to the mass ratio of 7:2:1, then coat it on stainless steel foil, cut it into a certain size, and dry it in vacuum. Obtain electrode sheet 1. The electrode sheet 1 is used as the positive electrode, and the 0.1mm thick zinc foil is used as the negative electrode. The specific mass ratio of the electrolyte is: 0.2% methyl cellulose, 0.01% polyvinyl alcohol, 0.1% anionic polyacrylamide with a molecular weight of 10,000, sulfuric acid Zinc 25%, the balance is water, assembled into a rechargeable zinc-ion battery, denoted as Cell 1. After testing, Cell 1 is at 100 mA g -1 The charge-discharge curve under constant current is shown in figure 1 .

Embodiment 2

[0020] The electrode sheet 1 prepared in Example 1 is used as the positive electrode, and the 0.1 mm thick zinc foil is used as the negative electrode. The specific mass ratio of the electrolyte is: ethyl cellulose 5%, polyvinyl alcohol 0.05%, and cationic polypropylene with a molecular weight of 5,000 Amide 0.3%, zinc nitrate 40%, and the balance water, assembled into a rechargeable zinc-ion battery, denoted as Cell 2. After testing, Cell 2 is at 100 mA g -1 The charge-discharge curve under constant current is shown in figure 2 .

Embodiment 3

[0022] Stir and mix zinc powder, conductive agent acetylene black, and binder PVDF at a mass ratio of 8:1:1, coat it on stainless steel foil, cut it into a certain size, and dry it in vacuum to obtain electrode sheet 2. The electrode sheet 1 prepared in Example 1 is used as the positive electrode, and the electrode sheet 2 is used as the negative electrode. The specific weight ratio of the electrolyte is: 3% methyl cellulose, 0.03% polyvinyl alcohol, and nonionic polyacrylamide with a molecular weight of 30,000 0.2%, zinc sulfate 30%, and water as the balance, assembled into a rechargeable zinc-ion battery, denoted as Cell 3. After testing, Cell 3 is at 100 mA g -1 The charge-discharge curve under constant current is shown in image 3 .

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Abstract

Provided is a polymer rechargeable zinc ion battery. The positive electrode uses manganese dioxide as the main materials, the negative electrode uses zinc element as the main materials, and soluble salt with zinc as the electrolyte is directly dissolved and suspended in tremellose high polymers. The polymer rechargeable zinc ion battery has the advantages of being not apt to weep, long in storing time, high in utilization rate of active substances and the like.

Description

technical field [0001] The invention belongs to the technical field of batteries, in particular to a polymer rechargeable zinc ion battery. Background technique [0002] Compared with primary batteries, secondary batteries can repeat charge and discharge cycles many times and can make full use of raw materials, so they are more economical and practical. At the same time, secondary batteries can also greatly alleviate the pollution caused by discarded primary batteries. [0003] Existing rechargeable zinc-ion batteries use an aqueous solution of zinc soluble salts as the electrolyte. However, using an aqueous solution as the electrolyte requires high sealing performance for the battery. If the battery sealing performance is poor, water leakage and oxidation crystallization will occur, resulting in Battery performance is degraded. Contents of the invention [0004] The technical problem to be solved by the present invention is that the existing rechargeable zinc-ion battery...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/24H01M10/26H01M4/38H01M4/62
CPCY02E60/124Y02E60/10
Inventor 康飞宇徐成俊李宝华杜鸿达
Owner SHENZHEN CITY THROUGH SCI & TECH OF NEW ENERGY CO LTD
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