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Molybdenum trioxide/polyaniline composite electrode material with layered structure and preparation method thereof

A molybdenum trioxide and composite electrode technology, applied in battery electrodes, structural parts, circuits, etc., can solve the problems of poor conductivity and cycle rate, and achieve good rate performance, low cost of raw materials, and enhanced diffusion ability.

Inactive Publication Date: 2018-05-18
SHANXI CHANGZHENG POWER TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] Aiming at the above-mentioned technical problems in the related art, the present invention proposes a method for preparing a layered structure molybdenum trioxide / polyaniline composite electrode material, and the molybdenum trioxide / polyaniline composite electrode material prepared according to the method solves the problems of the prior art. The problems of poor conductivity, cycleability and rate performance of molybdenum trioxide anode materials

Method used

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  • Molybdenum trioxide/polyaniline composite electrode material with layered structure and preparation method thereof
  • Molybdenum trioxide/polyaniline composite electrode material with layered structure and preparation method thereof
  • Molybdenum trioxide/polyaniline composite electrode material with layered structure and preparation method thereof

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Effect test

Embodiment 1

[0027] S1. Measure 10 mL of CH 3 (CH 2 ) 11 NH 2 (analytical pure) was dissolved in 300 mL of butanol solvent, and after the organic amine was fully dissolved, 1.2 g of molybdenum trioxide (analytical pure) was weighed and added to the above mixed solution, stirred and reacted in a water bath at 60 °C for 48 h, and a white precipitate was formed. Suction filtration and wash the filter cake with butanol solvent, and dry under reduced pressure at 70 °C for 48 h to obtain the molybdenum trioxide organic / inorganic hybrid compound intercalated with organic amine, which is the precursor of organic amine intercalation;

[0028] S2. Measure 0.5 g of the precursor of organic amine intercalation and add 9.6 mL of aniline to 240 mL of propionic acid solvent, N 2 Protected atmosphere, stirred and reacted in a water bath at 80 °C for 96 h, a pale pink precipitate was formed, filtered with suction and washed the filter cake with butanol solvent, and dried under reduced pressure at 50 °C...

Embodiment 2

[0032] S1. Measure 10 mL of CH 3 (CH 2 ) 12 NH 2 (analytical pure) dissolved in 200 mL of propanol solvent, until the organic amine was fully dissolved, weighed 0.63 g of molybdenum trioxide (analytical pure) into the above mixed solution, stirred and reacted in a water bath at 70 °C for 36 h, and a white precipitate was formed. Suction filtration and wash the filter cake with propanol solvent, and dry under reduced pressure at 70 °C for 48 h to obtain the molybdenum trioxide organic / inorganic hybrid compound intercalated with organic amine, which is the precursor of organic amine intercalation;

[0033] S2. Measure 0.5 g of the precursor of organic amine intercalation and add 6.9 mL of aniline to 200 mL of acetic acid solvent, N 2 Protected atmosphere, stirred and reacted in a water bath at 65 °C for 120 h, a pale pink precipitate was formed, filtered with suction and washed the filter cake with propanol solvent, and dried under reduced pressure at 50 °C for 24 h to obtai...

Embodiment 3

[0037] S1. Measure 8 mL of CH 3 (CH 2 )12NH 2 (analytical pure) was dissolved in 200 mL of ethanol solvent, and after the organic amine was fully dissolved, 0.55 g of molybdenum trioxide (analytical pure) was weighed and added to the above mixed solution, stirred and reacted in a water bath at 90 °C for 48 h, a white precipitate was formed, and pumped Filter and wash the filter cake with an ethanol solvent, dry under reduced pressure at 70°C for 48 h to obtain a molybdenum trioxide organic / inorganic hybrid compound intercalated with an organic amine, which is the precursor of the intercalated organic amine;

[0038] S2. Measure 0.5 g of the precursor of organic amine intercalation and add 4.5 mL of aniline to 180 mL of acetic acid solvent, N 2 The atmosphere was protected, stirred and reacted in a water bath at 70 °C for 96 h, a pale pink precipitate was formed, the filter cake was filtered with suction and washed with ethanol solvent, and dried under reduced pressure at 50...

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Abstract

The invention discloses a preparation method for a molybdenum trioxide / polyaniline composite electrode material with a layered structure. The preparation method comprises the following steps: S1, reacting molybdenum trioxide with organic amine in an alcoholic solvent under stirring to produce a white precipitate, and carrying out pumping filtration, washing and pressure-reduced drying so as to obtain an organic amine-intercalated molybdenum trioxide precursor; S2, reacting the organic amine-intercalated molybdenum trioxide precursor with aniline in an organic acid solvent under stirring to produce a light pink precipitate, and carrying out pumping filtration, washing and pressure-reduced drying so as to obtain an aniline-intercalated molybdenum trioxide compound; and S3, heating the aniline-intercalated molybdenum trioxide compound in an air atmosphere to 100 to 150 DEG C at a heating rate of 0.5 to 5 DEG C / min, carrying out heat insulation treatment for 72 to 120 h, then carrying outslow cooling to room temperature so as to obtain the molybdenum trioxide / polyaniline composite electrode material with the layered structure. The molybdenum trioxide / polyaniline composite electrode material prepared by using the method has no problems of poor conductivity, poor cyclic performance and poor rate performance of conventional molybdenum trioxide negative electrode materials.

Description

technical field [0001] The present invention relates to the technical field of preparation of lithium ion battery electrode materials, in particular to a method for preparing a layered structure molybdenum trioxide / polyaniline composite electrode material and the molybdenum trioxide / polyaniline composite electrode material prepared according to the method . Background technique [0002] In the prior art, graphite is the most commercially used anode material for lithium-ion batteries, and the actual specific capacity of graphite has reached 360 mAhg-1, which is very close to its theoretical capacity of 372 mAhg-1. In order to meet the market demand for high-capacity lithium batteries, it is particularly important to develop new anode materials that can replace graphite. Orthorhombic molybdenum trioxide (α-MoO3) is considered to be a promising material for the negative electrode of lithium-ion batteries. Intercalation, so it has a high theoretical capacity (1117 mAhg-1). ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/36H01M4/485H01M4/62H01M10/0525
CPCH01M4/366H01M4/485H01M4/624H01M10/0525Y02E60/10
Inventor 孙磊安富强
Owner SHANXI CHANGZHENG POWER TECH CO LTD
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