Chargeable zinc ion battery and method for manufacturing same

A rechargeable battery and zinc ion technology, which is applied in electrode manufacturing, sustainable manufacturing/processing, secondary batteries, etc., can solve the problems of low utilization rate of active materials, uneven battery capacity, large current attenuation, etc., and achieve high current characteristics, improvement of capacity and energy density, and improvement of cycle life

Active Publication Date: 2015-01-07
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

As an electrode material, manganese dioxide has the disadvantages of low conductivity and low utilization of active materials. In current zinc-ion rechargeable batteries, adding high-conductivity materials to the positive electrode to improve the conductivity of manganese dioxide will easily lead to large current attenuation. problem, and the problem of uneven capacity of different batteries
[0008] This battery has cheap features, but its capacity is too low, only 200mAh g -1 about

Method used

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  • Chargeable zinc ion battery and method for manufacturing same
  • Chargeable zinc ion battery and method for manufacturing same
  • Chargeable zinc ion battery and method for manufacturing same

Examples

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Effect test

Embodiment 1

[0037] Graphene-loaded manganese dioxide preparation method is as follows: add 0.4 gram of graphene to 300 milliliters (mL) 0.1 moles per liter (mol L -1 ) in the manganese acetate aqueous solution, so that the graphene is evenly dispersed, and then 200mL0.1M L -1 The potassium permanganate aqueous solution is added in the manganese acetate solution, and stirred for 10 hours, so that the manganese dioxide is fully deposited and attached to the surface of graphene, then the precipitate is filtered, washed with deionized water, and dried to obtain graphene-loaded manganese oxide.

[0038] Graphene-loaded manganese dioxide powder, conductive agent carbon black and binder polyvinylidene fluoride are mixed in a mass ratio of 8:1:1 and coated on stainless steel foil, cut into a certain size, and placed in a vacuum Dry it into a graphene-loaded manganese dioxide electrode sheet. The prepared graphene-loaded manganese dioxide electrode sheet is used as the positive electrode, the zi...

Embodiment 2

[0040] In order to illustrate the synergistic effect of the carbon-supported manganese dioxide composite material and manganese ions in the electrolyte, the present invention assembled two other batteries to compare the effect of the synergistic effect on improving the battery capacity. At first the present invention has prepared manganese dioxide powder according to the following method, put 200mL0.1M L -1 Add 300 milliliters (mL) of 0.1 moles per liter (mol L -1 ) in the manganese acetate aqueous solution, fully stirred for 10 hours, then filtered the precipitate, washed with deionized water, and dried to obtain the manganese dioxide powder. Mix manganese dioxide powder, conductive agent carbon black and binder polyvinylidene fluoride in a mass ratio of 7:2:1, then coat it on stainless steel foil, cut it into a certain size, and dry it in vacuum. Manganese dioxide electrodes. The manganese dioxide electrode sheet is used as the positive electrode, the 0.1mm thick zinc foil...

Embodiment 3

[0043] The preparation method of carbon nanotube-loaded manganese dioxide is as follows: 0.6 gram of carbon nanotubes is added to 300 milliliters (mL) of 0.1 moles per liter (mol L -1 ) in the manganese acetate aqueous solution, so that the carbon nanotubes can be dispersed evenly, and then 200mL0.1ML -1 The potassium permanganate aqueous solution was added to the manganese acetate solution, and stirred for 10 hours, so that the manganese dioxide was fully deposited and attached to the surface of the carbon nanotubes, then the precipitate was filtered, washed with deionized water, and dried to obtain the carbon nanotubes loaded with manganese dioxide.

[0044] Mix carbon nanotube-loaded manganese dioxide powder, conductive agent carbon black, and binder polyvinylidene fluoride in a mass ratio of 8:1:1, then coat it on stainless steel foil, cut it into a certain size, and place it in a vacuum Dry in medium to make carbon nanotube-loaded manganese dioxide electrode sheet. The ...

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Abstract

The invention discloses a chargeable zinc ion battery and a method for manufacturing same. The chargeable zinc ion battery comprises an anode, a cathode and electrolyte, wherein the active material of the cathode contains Zn. The chargeable zinc ion battery is characterized in that the active material of the anode contains carbon based manganese dioxide composite material which means attaching manganese dioxide material onto the surface of carbon based material. The carbon based manganese dioxide composite material added anode material of the zinc ion battery improves the heavy current property of the battery, and prolongs the circulation life of the battery. Mn.2+ added in the electrolyte co-reacts with the carbon based manganese dioxide composite material to increase the battery capacity.

Description

【Technical field】 [0001] The invention relates to the field of secondary batteries, in particular to a zinc ion rechargeable battery and a manufacturing method thereof. 【Background technique】 [0002] High-capacity and long-life rechargeable batteries are the cornerstone of our modern social life. No matter from mobile electronic devices to electric vehicles, high-capacity and long-life batteries are required to provide power. Therefore, it is very important to develop high-capacity rechargeable batteries. meaning. [0003] The rechargeable zinc-ion battery is a rechargeable battery that uses manganese oxide material as the positive electrode active material, zinc as the negative electrode active material, and an aqueous solution containing zinc ions as the electrolyte. This battery has the characteristics of being cheap, but its The capacity is too low, only 200~300mAh g -1 . It is well known that for batteries, having a high capacity is a prerequisite for their wide app...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/36H01M4/50H01M4/42H01M4/64H01M4/02H01M4/04
CPCH01M4/362H01M4/38H01M4/505H01M4/64H01M10/38H01M4/0404H01M4/366H01M4/663H01M4/42H01M4/50H01M4/622H01M4/623H01M10/36H01M2300/0002Y02E60/10Y02P70/50H01M4/583H01M4/624H01M2004/027H01M2004/028
Inventor 徐成俊陈彦伊史珊康飞宇
Owner SHENZHEN CITY THROUGH SCI & TECH OF NEW ENERGY CO LTD
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