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Anode material, preparation method thereof, anode, lithium ion total battery and manufacturing method

A technology of negative electrode material and production method, which is applied in the direction of electrolyte battery manufacturing, negative electrode, battery electrode, etc., can solve the problems of lack of high-performance sodium ion battery positive electrode material, limited practicability, and high use cost, and achieves low price and cycle life. Long and safe performance

Inactive Publication Date: 2017-10-17
SHANDONG BAOLI BIOMASS ENERGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, compared with graphite as negative electrode, Li 4 Ti 5 o 12 higher cost of use
[0005] 201510957379.X announced the use of sodium titanate as a negative electrode material for sodium-ion batteries, which has a low cost of use and has created a new application direction for sodium titanate. However, sodium-ion batteries are still in the initial research stage and have the highest sodium storage capacity. It only reaches 172mAh / g, and at the same time, it lacks matching high-performance sodium-ion battery cathode materials, which limits its practicability

Method used

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  • Anode material, preparation method thereof, anode, lithium ion total battery and manufacturing method
  • Anode material, preparation method thereof, anode, lithium ion total battery and manufacturing method
  • Anode material, preparation method thereof, anode, lithium ion total battery and manufacturing method

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Embodiment 1

[0043] Synthetic Na 2 Ti 3 o 7 Nanotube material: 0.5g TiO 2 Add the nanopowder to 20mL of 10mol / L NaOH aqueous solution, stir well, and heat the mixed solution at 130°C for 24 hours in a high-pressure reaction kettle. After the reaction, the white precipitate in the lower layer was fully washed with distilled water, dried in air and then annealed at 400° C. for 1 hour.

[0044] Synthetic Na 2 Ti 3 o 7 Common material: Na 2 CO 3 Powder and TiO 2 The nanopowders were mixed at a molar ratio of 1:3, and then ball milled at 300 rpm for 10 hours. Finally the mixture was heated at 700°C for 10 hours.

[0045] Synthetic Li 4 Ti 5 o 12 Material: Will Li 2 CO 3 Powder and TiO 2 Nanopowders are mixed in a molar ratio of 2:5, where Li 2 CO 3 Powder excess 2%, and then ball milled at 300rpm for 10 hours. Finally the mixture was heated at 700°C for 10 hours.

[0046] In order to test Na 2 Ti 3 o 7 The advantages of nanotube materials as lithium ion negative electrode...

Embodiment 2

[0052] Synthetic Na 2 Ti 3 o 7 Nanotube material: 0.5g TiO 2 Add the nanopowder to 20mL of 10mol / L NaOH aqueous solution, stir well, and heat the mixed solution at 130°C for 24 hours in a high-pressure reaction kettle. After the reaction, the white precipitate in the lower layer was fully washed with distilled water, dried in air and then annealed at 400° C. for 1 hour.

[0053] Synthesis of LiMn 2 o 4 Material: First, mix 0.1mol Na with stirring 2 CO 3 Add 1L 0.1mol / L MnSO 4 In aqueous solution, stirred for 10 hours, MnCO was obtained by washing and precipitation 3 Microspheres, dried in an oven. Finally, the MnCO was calcined at 700 °C 3 and Li 2 CO 3 (2% excess) 4:1 mole ratio mixture for 10 hours.

[0054] Preparation of negative electrode: Na 2 Ti 3 o 7 Nanotube material, conductive carbon black, and polyvinylidene fluoride are mixed evenly at a mass ratio of 80:15:5, adjusted into a slurry in N-methylpyrrolidone solution, evenly coated on Cu foil or Al fo...

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Abstract

The invention belongs to the technical field of battery materials, and particularly relates to an anode material, a preparation method of the anode material, an anode, a lithium ion total battery, and a manufacturing method of the total battery. The anode material provided by the invention comprises a Na2Ti3O7 nano-tube material; a synthesis method of the nano-tube material comprises the following steps: mixing TiO2 nano-powder and alkali solution, conducting a heating reaction under high pressure, and then, washing a precipitate, generated after a reaction, with water, drying and annealing at 300 to 500 DEG C. According to the anode material provided by the invention, the synthetic raw materials are wide in source and easy to obtain; the cost is low; the charge-discharge rate performance is ultrahigh; the reversible discharge capacity of the anode material reaches 350 mAh / g; and the lithium ion total battery through combination of the anode material has the energy density at a battery level and the power density similar to a capacitor.

Description

technical field [0001] The invention belongs to the field of battery materials, and specifically relates to a negative electrode material, a method for manufacturing the negative electrode material, a negative electrode, a lithium-ion full battery, and a method for making the full battery. Background technique [0002] Due to the advantages of high energy density, long cycle life, and good safety performance, lithium-ion batteries have been widely used in various portable electronic devices since their introduction in the 1990s. However, further improvements are still needed if lithium-ion batteries are to be used in medium-sized electric vehicles or as other large-scale energy storage devices. Such electrochemical improvements can be achieved by tuning the components of Li-ion batteries as well as the overall system. [0003] The negative electrode material is a key component of lithium-ion batteries, which directly affects the specific capacity of lithium-ion batteries. ...

Claims

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Application Information

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IPC IPC(8): H01M4/485H01M4/131H01M4/1391H01M10/0525H01M10/058B82Y30/00
CPCB82Y30/00H01M4/131H01M4/1391H01M4/485H01M10/0525H01M10/058H01M2004/021H01M2004/027Y02E60/10Y02P70/50
Inventor 张元成王连洲于萌萌朱晓波左斌吕志凤
Owner SHANDONG BAOLI BIOMASS ENERGY
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