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A kind of aqueous rechargeable sodium battery cathode material and corresponding sodium battery

A cathode material, sodium battery technology, applied in battery electrodes, secondary batteries, circuits, etc., can solve problems such as inability to use the grid, and achieve the effects of low cost, long cycle life and stable performance

Active Publication Date: 2018-11-06
浙江巨力宝纺织科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the problem with this type of energy is that they are all intermittent energy sources, and the power generated by them depends heavily on natural factors such as weather, season, location, and time. This characteristic makes them unable to be used in a normal operating grid.
In recent years, the research on sodium-ion batteries has attracted more attention. The content of sodium ions on the earth is relatively high, and the price is low. However, it is difficult to develop electrode materials suitable for sodium-ion batteries.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] An aqueous rechargeable sodium battery positive electrode material, in parts by weight, comprising the following components:

[0021] Na 0.44 Mn 0.9 Ti (0.1-y) M y O 65 parts, conductive agent 9 parts, adhesive 1 part,

[0022] where M is Al, where 0≤y<0.1.

[0023] The conductive agent is carbon nanotubes, and the adhesive is polyvinylidene fluoride. Na 0.44 Mn 0.9 Ti (0.1-y) M y The preparation method of O is: 2 CO 3 , MnCO 3 , Ti(NO 3 ) 4 , and the precursor of M, mix well, grind, wherein the amount of each component is calculated according to the molar ratio of Na, Mn, Ti, M as 0.4:0.9:(0.1-y):y, then add NaCl to continue grinding and stirring uniform, and then calcined in a muffle furnace at a temperature of 730 ° C for 4 hours, cooled to room temperature, washed with deionized water and absolute ethanol, respectively, and dried to obtain the required Na 0.44 Mn 0.9 Ti (0.1-y) M y O, where 0≤y3 . The input amount of the NaCl and Na 2 CO 3 The m...

Embodiment 2

[0025] An aqueous rechargeable sodium battery positive electrode material, in parts by weight, comprising the following components:

[0026] Na 0.44 Mn 0.9 Ti (0.1-y) M y O 90 parts, conductive agent 30 parts, adhesive 5 parts,

[0027] where M is Fe, where 0≤y<0.1.

[0028] The conductive agent is carbon nanofibers, and the adhesive is a mixture of polyvinylidene fluoride, polytetrafluoroethylene, hydroxymethyl cellulose, and polyacrylic acid. The Na 0.44 Mn 0.9 Ti (0.1-y) M y The preparation method of O is: 2 CO 3 , MnCO 3 , Ti(NO 3 ) 4 , and the precursor of M, mix well, grind, wherein the amount of each component is calculated according to the molar ratio of Na, Mn, Ti, M as 0.4:0.9:(0.1-y):y, then add NaCl to continue grinding and stirring uniform, and then calcined in a muffle furnace at a temperature of 730 ° C for 6 hours, cooled to room temperature, washed with deionized water and anhydrous ethanol, respectively, and dried to obtain the required Na 0.44...

Embodiment 3

[0030] An aqueous rechargeable sodium battery positive electrode material, in parts by weight, comprising the following components:

[0031] Na 0.44 Mn 0.9 Ti (0.1-y) M y O 80 parts, conductive agent 20 parts, adhesive 3 parts,

[0032] where M is one of Cu, where 0≤y<0.1.

[0033]The conductive agent is graphene, and the adhesive is hydroxymethyl cellulose. The Na 0.44 Mn 0.9 Ti (0.1-y) M y The preparation method of O is: 2 CO 3 , MnCO 3 , Ti(NO 3 ) 4 , and the precursor of M, mix well, grind, wherein the amount of each component is calculated according to the molar ratio of Na, Mn, Ti, M as 0.4:0.9:(0.1-y):y, then add NaCl to continue grinding and stirring uniform, then calcined in a muffle furnace at a temperature of 730 ° C for 5 hours, cooled to room temperature, washed with deionized water and absolute ethanol, respectively, and dried to obtain the desired Na 0.44 Mn 0.9 Ti (0.1-y) M y O, where 0≤y3 . The input amount of the NaCl and Na 2 CO 3 The mo...

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PUM

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Abstract

The invention discloses a cathode material for a water-based rechargeable sodium battery and a water-based sodium battery. The prepared cathode material takes Na0.44Mn0.9Ti(0.1-y)MyO as a main active matter. Compared with Na0.44MnO, the material has a larger specific surface area; in a battery reaction process, the material can be in full contact with electrolyte solution; the electrode material can release higher specific capacity and can show excellent circularity. A preparation technique of the cathode material is short; the operation is simple; the cost is low; the cathode material is suitable for large-scale industrial production; the water-based rechargeable sodium battery made from the cathode material has stable performance, high power density, long cycle life, safety, environment-friendly effect and low cost.

Description

technical field [0001] The invention relates to the field of capacitor batteries, in particular to a positive electrode material for an aqueous rechargeable sodium battery and a sodium battery using the same as the positive electrode. Background technique [0002] At present, electricity supply mainly relies on resource-based fossil fuels, and the carbon emission generated in the production process is the main cause of the current global warming effect. Moreover, in recent years, with the reduction of resource-based fuels, the development and utilization of new energy has become a new trend. Solar energy, wind energy and tidal energy are all renewable energy sources, and these new energy sources do not emit harmful substances during use, and are safe and environmentally friendly. However, the problem with such energy sources is that they are all intermittent energy sources, and the amount of electrical energy generated by them is serious due to natural factors such as weath...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/485H01M4/505H01M4/48H01M4/62H01M10/36
CPCH01M4/48H01M4/485H01M4/505H01M4/623H01M4/625H01M10/36Y02E60/10
Inventor 叶青
Owner 浙江巨力宝纺织科技有限公司
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