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Sodium ion battery positive electrode material containing ferric acid nickel porous nanotubes and preparation method of sodium ion battery positive electrode material

A sodium-ion battery and cathode material technology, applied in battery electrodes, nanotechnology, nanotechnology, etc., can solve problems that restrict practical applications, and achieve the effects of low cost, excellent sodium storage performance, and high specific capacity

Inactive Publication Date: 2017-10-24
FUJIAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the practical application of sodium-ion batteries is restricted due to the lack of matching suitable electrode materials. The development of electrode materials for sodium-ion batteries with excellent performance is currently a research hotspot and focus in this field.

Method used

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  • Sodium ion battery positive electrode material containing ferric acid nickel porous nanotubes and preparation method of sodium ion battery positive electrode material
  • Sodium ion battery positive electrode material containing ferric acid nickel porous nanotubes and preparation method of sodium ion battery positive electrode material
  • Sodium ion battery positive electrode material containing ferric acid nickel porous nanotubes and preparation method of sodium ion battery positive electrode material

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Experimental program
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Effect test

Embodiment 1

[0019] A NiFe-containing 2 o 4 The preparation method of the sodium ion battery cathode material of porous nanotube, comprises the following steps:

[0020] 1) Porous NiFe 2 o 4 Preparation of nanotubes: Dissolve 1.2 g of ferric chloride, 0.6 g of nickel nitrate and 0.3 g of terephthalic acid in 65 ml of N,N-dimethylformamide, stir well, then drop into 2 ml of 0.3 mol / L Sodium hydroxide, stirred for another 15 minutes, transferred to the reaction kettle, reacted at 150°C for 12 h, then centrifuged and washed to obtain a yellow-brown product, and finally annealed at 500°C in air to obtain the final product;

[0021] 2) Preparation of cathode material: porous NiFe 2 o 4 Nanotubes, gum arabic and acetylene black are mixed and ground at a mass ratio of 82:10:10 to prepare anode materials for sodium ion batteries.

[0022] Na-ion battery assembly: Na-ion battery cathode material is evenly coated on a 1.2 cm 2 The copper sheet is used as the positive electrode, the negative e...

Embodiment 2

[0025] A NiFe-containing 2 o 4 The preparation method of the sodium ion battery cathode material of porous nanotube, comprises the following steps:

[0026] 1) Porous NiFe 2 o 4 Preparation of nanotubes: MIL-88B-Fe was prepared by one-step hydrothermal synthesis 2 Ni precursor, and then annealed in air to obtain porous NiFe 2 o 4 nanotube;

[0027] 2) Preparation of cathode material: porous NiFe 2 o 4 After mixing and grinding the nanotubes, gum arabic and acetylene black, the cathode material of the sodium ion battery is prepared.

[0028] Porous NiFe 2 o 4 The specific preparation steps of the nanotubes are as follows: dissolve 1.0 g ferric chloride, 0.5 g nickel nitrate and 0.1 g terephthalic acid into 50 ml N, N-dimethylformamide, stir well, and drop into 1 ml 0.1 mol / L sodium hydroxide, stirred for another 10 minutes, transferred to the reaction kettle, reacted at 130°C for 20 h, then centrifuged and washed to obtain a yellow-brown product, and finally annealed...

Embodiment 3

[0030] A NiFe-containing 2 o 4 The preparation method of the sodium ion battery cathode material of porous nanotube, comprises the following steps:

[0031] 1) Porous NiFe 2 o 4 Preparation of nanotubes: Dissolve 1.5 g of ferric chloride, 0.8 g of nickel nitrate and 0.6 g of terephthalic acid in 80 ml of N,N-dimethylformamide, stir well, then drop into 4 ml of 0.5 mol / L Sodium hydroxide, stirred for another 20 minutes, transferred to the reaction kettle, reacted at 170°C for 6 h, then centrifuged and washed to obtain a yellow-brown product, and finally annealed at 700°C in air to obtain the final product;

[0032] 2) Preparation of cathode material: porous NiFe 2 o 4 After mixing and grinding the nanotubes, gum arabic and acetylene black, the cathode material of the sodium ion battery is prepared.

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Abstract

The invention discloses a sodium battery positive electrode material containing ferric acid nickel porous nanotubes and a preparation method of the sodium ion battery positive electrode materials. The preparation method includes: preparing an MIL-88B-Fe2Ni precursor with a one-step hydrothermal synthesis method and then annealing in the air to obtain porous NiFe2O4 nanotubes; mixing the porous NiFe2O4 nanotubes with Arabic gum and acetylene black to obtain the sodium ion battery positive electrode material. Coordination cooperation of organic ligands involved in reaction with Fe<3+> and Ni<2+> is applied ingeniously to form a metal-organic framework with special morphology, and the NiFe2O4 nanotubes are finally annealed in the air atmosphere; the porous NiFe2O4 nanotubes derived from the metal-organic framework serves as the sodium battery positive electrode material, and relatively high specific capacity and good cycling stability are achieved.

Description

technical field [0001] The invention belongs to the field of preparation of electrode materials, in particular to a NiFe-containing 2 o 4 Porous nanotube sodium ion battery positive electrode material and preparation method thereof. Background technique [0002] Lithium-ion batteries (LIBs) have been widely used in mobile electronic devices, defense industry, and electric vehicles due to their remarkable advantages such as high capacity, high voltage, and long cycle life. However, with the continuous popularization of lithium-ion batteries, the price of lithium (lithium carbonate) continues to rise, and the reserves of lithium resources in the earth are also small, unevenly distributed, and difficult to mine. Compared with lithium, sodium element has more abundant reserves, low price and wide sources. Therefore, sodium-ion batteries have received extensive attention in recent years, and they have better application prospects than LIBs in large-scale applications in the fie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/52H01M4/131H01M4/1391B82Y30/00
CPCB82Y30/00H01M4/131H01M4/1391H01M4/52Y02E60/10
Inventor 洪振生周凯强何晓晴黄志高
Owner FUJIAN NORMAL UNIV
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