Lithiation molybdenum trioxide nano band electrode material and its lithiation modifying method

A technology for lithiating molybdenum trioxide and molybdenum trioxide, which is applied in the fields of nanomaterials and nanometers, and achieves the effects of good reproducibility and simple preparation method.

Active Publication Date: 2007-11-14
武汉经开科创运营有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The lithiated modified molybdenum trioxide nanobelt electrode material was synthesized by combining inorganic sol and secondary hydrothermal synthesis technology. The

Method used

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  • Lithiation molybdenum trioxide nano band electrode material and its lithiation modifying method
  • Lithiation molybdenum trioxide nano band electrode material and its lithiation modifying method
  • Lithiation molybdenum trioxide nano band electrode material and its lithiation modifying method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] To prepare lithiated molybdenum trioxide nanobelts, the preparation steps are as follows:

[0031] (1) 4.33 g (NH 4 ) 6 Mo 7 o 24 4H 2 O (≥99.0%) particles were dissolved in 35 milliliters of deionized water; (2) the prepared (NH 4 ) 6 Mo 7 o 24 Solution passed through proton exchange resin to obtain bright blue MoO 3 ·nH 2 O sol, the pH value is 2; (3) move the sol to a stainless steel reaction kettle with polytetrafluoroethylene lining, and hydrothermally treat it at 180 ° C for 4 hours; (5) cool and filter, and wash with absolute ethanol and deionized water respectively 3 times, dry at 80°C to obtain light blue molybdenum trioxide nanobelts; (6) Add the obtained molybdenum trioxide nanobelts into deionized water and ultrasonically disperse for 30 minutes, then add LiCl powder, the amount of LiCl added makes the molybdenum trioxide in the system The molar ratio of the element to the lithium element is 1:5, stirring for 2 days; (7) transfer the stirred suspen...

Embodiment 2～ Embodiment 5

[0034] Preparation of Lithiated Molybdenum Trioxide Nanobelts

[0035] The method for preparing molybdenum trioxide nanobelts is basically the same as in Example 1, except that the hydrothermal treatment temperatures of Examples 2, 3, 4, and 5 are respectively 180, 160, 150, and 170°C, and the hydrothermal treatment times are respectively 1, 2, and 2 , 1.5 days.

[0036] The process conditions of molybdenum trioxide nanobelt lithiation with lithium salt are shown in Table 1.

[0037] Table 1:

[0038]

[0039] Lithiated low-dimensional layered nanomaterials can be obtained by referring to the method of Example 1 according to the above experimental parameters.

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Abstract

A lithiated molybdenum trioxide nanometer belt electrode material and its the lithiation modification method, its characteristic is that: put molybdenum trioxide nanometer belt in deionized water to conduct supersonic dispersing, then add lithium salt powder to make the mole ratio of molybdenum element and lithium element be 1: 3 to 1: 10; stir; move the obtained suspension liquid into the stainless reaction pot with poly-tetre-fluro-ethylene substrate to conduct hydrothermo reaction; cool and filter the hydrothermo product and wash the product by deionized water to obtain the molybdenum trioxide nanometer belt.

Description

technical field [0001] The invention relates to a method for preparing lithiated molybdenum trioxide nanobelts by combining inorganic sol technology and secondary hydrothermal synthesis technology, belonging to the field of nanomaterials and nanotechnology. Background technique [0002] Lithium-ion batteries are the latest generation of secondary batteries developed in the 1990s. One-dimensional layered molybdenum trioxide nanomaterials have the potential to be applied to lithium ion electrode materials because of their special layered structure that allows lithium ions to intercalate and deintercalate between layers. The huge specific surface area brought by the nanometer scale can increase and The contact area of ​​the electrolyte reduces the diffusion distance of lithium ions. Therefore, the one-dimensional layered molybdenum trioxide nanomaterial has attracted widespread attention due to its advantages in both nanomaterials and its own structure. However, because the la...

Claims

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Application Information

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IPC IPC(8): H01M4/02H01M4/04
CPCY02E60/10
Inventor 陈文麦立强胡彬祁琰媛周静戴英王中林
Owner 武汉经开科创运营有限公司
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