Anode material for sodium-ion battery, preparation method thereof and method for increasing air stability

A sodium-ion battery, air stability technology, applied in the fields of energy materials and electrochemical power sources, can solve the problems of rising cost of assembling batteries, unstable materials, etc., to reduce the distance, improve the degree of delocalization, and improve the antioxidant capacity. Effect

Active Publication Date: 2017-01-11
山东华纳新能源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, this type of material is extremely unstable in the air, resulting in an increase in the cost of material synthesis, transportation, and later battery assembly processes
At present, the cause of this problem has not yet been determined, and the relevant research dedicated to solving this problem is basically still blank.

Method used

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  • Anode material for sodium-ion battery, preparation method thereof and method for increasing air stability
  • Anode material for sodium-ion battery, preparation method thereof and method for increasing air stability
  • Anode material for sodium-ion battery, preparation method thereof and method for increasing air stability

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) Preparation of 5% copper, 10% tin doped NaNi 0.45 mn 0.4 Cu 0.05 sn 0.1 o 2 Cathode material.

[0031] Accurately weigh the corresponding proportion of Na 2 CO 3 , NiO, Mn 2 o 3 , CuO, SnO 2 Ball milled for 24 hours, pressed into a disc with a diameter of 14mm under a pressure of 10MPa, and calcined at 1000°C for 12 hours to obtain a black powder.

[0032] (2) Preparation of NaNi doped with 5% copper and 10% tin 0.45 mn 0.4 Cu 0.05 sn 0.1 o 2 Composite cathode

[0033] The positive electrode material prepared above is mixed with Super P and binder polyvinylidene fluoride at a mass ratio of 0.7:0.2:0.1, and the solvent N-methylpyrrolidone is added, and it is obtained by pulping, smearing, drying and other processes. Composite positive electrode.

[0034] (3) Assembling sodium-ion batteries

[0035] The composite positive electrode prepared above is assembled with the sodium negative electrode into a sodium ion battery, and the electrolyte is selected...

Embodiment 2

[0039] (1) Preparation of 5% copper-doped, 10% titanium-doped NaNi 0.45 mn 0.4 Cu 0.05 Ti 0.1 o 2 Cathode material (raw material is Na 2 CO 3 , NiO, Mn 2 o 3 , CuO, TiO 2 , and all the other steps are the same as in Example 1)

[0040] (2) Preparation of NaNi doped with 5% copper and 10% titanium 0.45 mn 0.4 Cu 0.05 Ti 0.1 o 2 Composite positive electrode (the specific steps are the same as in Example 1).

[0041] (3) Assemble the sodium ion battery (the specific steps are the same as in Example 1).

[0042] (4) Sodium ion battery test (the specific steps are the same as in Example 1).

Embodiment 3

[0044] (1) Preparation of 15% copper, 20% titanium doped NaNi 0.35 mn 0.3 Cu 0.15 Ti 0.2 o 2 Cathode material (raw material is Na 2 CO 3 , NiO, Mn 2 o 3 , CuO, TiO 2 , all the other steps are with embodiment 1).

[0045] (2) Preparation of NaNi doped with 15% copper and 20% titanium 0.35 mn 0.3 Cu 0.15 Ti 0.2 o 2 Composite positive electrode (the specific steps are the same as in Example 1).

[0046] (3) Assemble the sodium ion battery (the specific steps are the same as in Example 1).

[0047] (4) Sodium ion battery test (the specific steps are the same as in Example 1).

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PUM

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Abstract

The invention discloses an anode material for a sodium-ion battery doped with various metals and with air stability, a preparation method thereof and a method for increasing the air stability of a NaAO2 type anode material. The anode material for the sodium-ion battery doped with various metals is prepared according to the steps of early mixing, tabletting and high-temperature calcination. The preparation method is simple in process; the raw materials are easily acquired and are low in cost; and the practicability is high. The anode material for the sodium-ion battery, provided by the invention, has high air stability and higher charge-discharge specific capacity, so that the sodium-ion battery can be used as a novel high-energy density energy-storing material which is simply prepared and conveniently stored. The application prospect is wide.

Description

technical field [0001] The invention belongs to the field of electrochemical power supply and also belongs to the technical field of energy materials. Specifically relate to a class of positive electrode materials for air-stable sodium-ion batteries and preparation methods thereof, as well as improving NaAO 2 A method for the air stability of type cathode materials. Background technique [0002] Compared with lithium resources in lithium-ion batteries, sodium resources have the natural advantages of being widely distributed (the abundance in the earth's crust is 2.3-2.8%, about 12,500 times that of lithium elements), and low prices, so sodium-ion batteries are more potential for sustainable development. [0003] In recent years, layered transition metal oxides NaAO 2 Because of its crystal structure with reversible intercalation of sodium ions, high specific capacity, simple preparation method, and low price, it has attracted wide attention from researchers in the field o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/505H01M4/525H01M4/1391H01M10/36
CPCH01M4/1391H01M4/505H01M4/525H01M10/36Y02E60/10
Inventor 郭玉国姚胡蓉殷雅侠王鹏飞
Owner 山东华纳新能源有限公司
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