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An alkaline aqueous sodium ion battery

An alkaline aqueous solution, sodium-ion battery technology, applied in the direction of alkaline storage battery, alkaline storage battery manufacturing, alkaline electrolyte, etc., can solve problems such as increasing cost, achieve high conductivity and stability, cheap raw materials, good commercial The effect of changing the foreground

Inactive Publication Date: 2019-01-01
SHENZHEN JANAENERGY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When slight hydrogen and oxygen evolution occurs, the pH of the electrolyte is likely to change greatly, which will corrode the current collector and electrode materials, resulting in the actual efficiency of the battery. , which greatly increases the cost of

Method used

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  • An alkaline aqueous sodium ion battery
  • An alkaline aqueous sodium ion battery
  • An alkaline aqueous sodium ion battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] This example describes a tunnel oxide Na 0.5 mn 0.9 Fe 0.1 o 2 It is an alkaline aqueous sodium ion battery with a zinc sheet as the positive electrode and the negative electrode.

[0056] (1) Positive part: Na 0.5 mn 0.9 Fe 0.1 o 2 Synthesis: Dissolve sodium acetate, manganese acetate tetrahydrate and ferric citrate in absolute ethanol at a molar ratio of 0.5:0.9:0.1, heat and stir at 50-90°C in a heat-collecting magnetic stirrer, and slowly add deionized water until all salts are completely dissolved. Then add phenol and formaldehyde solution to the mixed solution. Continue to heat and stir until the mixed solution becomes a gel-like solid. Transfer the gel-like solid into a vacuum oven at 50-100° C., and dry it in vacuum for 8-15 hours. The dried solid is fully ground, put into a muffle furnace under an air atmosphere, and calcined at 700-900° C. for 8-15 hours.

[0057] Na 0.5 mn 0.9 Fe 0.1 o 2 Electrode preparation: Na 0.5 mn 0.9 Fe 0.1 o 2 It is...

Embodiment 2

[0062] This example describes a tunnel oxide Na 0.5 mn 0.9 Al 0.1 o 2 It is an alkaline aqueous sodium ion battery with activated carbon as the positive electrode and the negative electrode.

[0063] (1) Positive part: Na 0.5 mn 0.9 Al 0.1 o 2 : The molar ratio is 0.5:0.9:0.1 Weigh sodium acetate, manganese acetate tetrahydrate and aluminum nitrate and dissolve in absolute ethanol, heat and stir at 50-90°C in a collector-type magnetic stirrer, and slowly add deionized water until all salts are completely dissolved. Then add phenol and formaldehyde solution to the mixed solution. Continue to heat and stir until the mixed solution becomes a gel-like solid. Transfer the gel-like solid into a vacuum oven at 50-100° C., and dry it in vacuum for 8-15 hours. The dried solid is fully ground, put into a muffle furnace under an air atmosphere, and calcined at 700-900° C. for 8-15 hours.

[0064] Na 0.5 mn 0.9 Al 0.1 o 2 Electrode preparation: Na 0.5 mn 0.9 Al 0.1 o 2 ...

Embodiment 3

[0069] This example describes a tunnel oxide Na 0.5 mn 0.9 co 0.1 o 2 It is an alkaline aqueous sodium ion battery with a zinc sheet as the positive electrode and the negative electrode.

[0070] (1) Positive part: Na 0.5 mn 0.9 co 0.1 o 2 Synthesis: Weigh sodium acetate, manganese acetate tetrahydrate and cobalt nitrate at a molar ratio of 0.5:0.9:0.1 and dissolve them in absolute ethanol, heat and stir at 50-90°C in a heat-collecting magnetic stirrer, while slowly adding deionized water until all salts are completely dissolved. Then add phenol and formaldehyde solution to the mixed solution. Continue to heat and stir until the mixed solution becomes a gel-like solid. Transfer the gel-like solid into a vacuum oven at 50-100° C., and dry it in vacuum for 8-15 hours. The dried solid is fully ground, put into a muffle furnace under an air atmosphere, and calcined at 700-900° C. for 8-15 hours.

[0071] Na 0.5 mn 0.9 co 0.1 o 2 Electrode preparation: Na 0.5 mn 0....

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Abstract

The invention discloses an alkaline aqueous solution sodium ion battery and a preparation method thereof, the alkaline aqueous solution sodium ion battery is mainly characterized in that the cathode material adopted is NaxMnyNzO2, N is a doping element, and can be one or more of metal elements Ca, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Al, Zr and Ru. The cathode material is activated carbon, sodium titanium phosphate and other electrode materials capable of stable deintercalation of sodium ions in an aqueous solution and a zinc electrode which can be stable in an alkaline aqueous solution. The electrolyte is an alkaline aqueous solution. The cathode material adopted by the invention has high first-cycle charging capacity, low cost of raw materials, simple preparation process and the like. Compared with a neutral electrolyte, an alkaline electrolyte has higher conductivity and stability, requirements for current collector and other metal accessories are lowered, and a selection range is widened, so the alkaline aqueous solution sodium ion battery has good commercial prospects.

Description

technical field [0001] The invention belongs to the field of secondary batteries, in particular to an alkaline aqueous solution sodium ion battery. Background technique [0002] People's excessive consumption of non-renewable resources such as oil, coal, natural gas, etc. has led to increasingly serious energy and environmental problems. It is imperative to develop renewable energy sources such as wind energy, solar energy, and tidal energy. However, electrochemical energy storage has become a major limitation for renewable energy. One of the key technologies for large-scale application. At the same time, with the advancement of science and technology, the development of the economy and the improvement of people's living standards, the fields of national defense, transportation, and portable equipment have put forward higher requirements for electrochemical energy storage devices. Finding an electrochemical device with high energy density, high power density, good safety an...

Claims

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Application Information

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IPC IPC(8): H01M4/36H01M4/485H01M4/505H01M4/525H01M10/28
CPCH01M4/364H01M4/485H01M4/505H01M4/525H01M10/28H01M2300/0014Y02E60/10Y02P70/50
Inventor 曹余良袁天赐陈重学肖利芬艾新平杨汉西
Owner SHENZHEN JANAENERGY TECH CO LTD
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