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Nickel-based rechargeable battery and manufacturing method thereof

A technology for rechargeable batteries and manufacturing methods, applied in the direction of sustainable manufacturing/processing, secondary batteries, and final product manufacturing, which can solve problems such as low capacity, achieve high capacity, increase capacity, and improve high-current characteristics

Inactive Publication Date: 2015-08-26
SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] This kind of battery has the characteristics of low cost and long cycle life, but its capacity is too low, only about 100-300mAh / g

Method used

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  • Nickel-based rechargeable battery and manufacturing method thereof
  • Nickel-based rechargeable battery and manufacturing method thereof
  • Nickel-based rechargeable battery and manufacturing method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0043] The preparation method of graphene-supported manganese dioxide is as follows: 0.4 grams of graphene is added into 300 mL of manganese acetate aqueous solution with a concentration of 0.1 mol / L and fully stirred to allow the graphene to disperse evenly. Then add 200mL of potassium permanganate aqueous solution with a concentration of 0.1M / L into the manganese acetate solution, and stir for 10 hours, so that manganese dioxide is fully deposited on the surface of graphene, then filter the precipitate, and wash with deionized water and drying to obtain graphene-loaded manganese dioxide powder, that is, carbon-manganese dioxide composite material.

[0044] 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.

[0045] The prepared graphene-l...

Embodiment 2

[0049] The carbon nanotube powder and the manganese dioxide powder are mixed according to the weight ratio of 2:8 to prepare the mixed powder of the carbon nanotube and the manganese dioxide, that is, the carbon-manganese dioxide composite material. The mixed powder of carbon nanotubes and manganese dioxide, the conductive agent carbon black and the binder polyvinylidene fluoride are mixed according to the mass ratio of 8:1:1, and then coated on the stainless steel foil, cut into a certain size, Dry in vacuum to form carbon nanotube-loaded manganese dioxide electrode sheets. The prepared carbon nanotube-loaded manganese dioxide electrode sheet is used as the positive electrode, the 0.1mm thick nickel foil is used as the negative electrode, and the electrolyte is NiSO with a concentration of 1mol / L. 4 Add MnSO at a concentration of 1mol / L 4 Aqueous solution, the above-mentioned positive electrode, negative electrode and electrolyte are assembled into a battery, denoted as the ...

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Abstract

The invention discloses a nickel-based rechargeable battery and a manufacturing method thereof. The nickel-based rechargeable battery comprises an anode, a cathode and an electrolyte, wherein an active material of the cathode includes nickel; an active material of the anode includes a carbon and manganese dioxide composite material; the carbon and manganese dioxide composite material is a material with manganese dioxide attached on the surface of a nano carbon material carrier or a mixed material of a nano carbon material and manganese dioxide; and the electrolyte contains a bivalent nickel ion Ni<2+> and a bivalent manganese ion Mn<2+>. The manufacturing method comprises the steps of manufacturing the anode taking the carbon and manganese dioxide composite material as the active material, manufacturing the cathode taking the nickel as the active material, preparing the electrolyte containing the bivalent nickel ion Ni<2+> and the bivalent manganese ion Mn<2+>, and finally packaging the anode, the cathode and the electrolyte to obtain the nickel-based rechargeable battery. The obtained battery has the characteristics of high capacity and long cycle life.

Description

【Technical field】 [0001] The invention relates to the field of secondary batteries, in particular to a manganese redox-based nickel-based rechargeable battery and a manufacturing method thereof. 【Background technique】 [0002] The development of future society requires high-capacity and long-life rechargeable batteries to support, such as consumer electronics, electric vehicles and aerospace and other fields all require high-capacity batteries. [0003] The existing rechargeable nickel-ion battery is a rechargeable battery that uses manganese oxide material as the positive electrode active material, nickel as the negative electrode active material, and an aqueous solution containing nickel ions as the electrolyte. Common rechargeable nickel-ion batteries use manganese dioxide as the positive electrode, nickel as the negative electrode, and an aqueous solution containing nickel ions as the electrolyte. The mechanism by which this nickel-ion battery stores electrons is as fol...

Claims

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Application Information

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IPC IPC(8): H01M10/36H01M10/38
CPCH01M10/36H01M10/38Y02E60/10Y02P70/50
Inventor 徐成俊杨倩陈彦伊康飞宇
Owner SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
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