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Metal intercalation molybdenum oxide material as well as preparation method and application thereof

A technology of molybdenum oxide and molybdenum oxide powder, which is applied in the direction of electrical components, battery electrodes, non-aqueous electrolyte storage batteries, etc., can solve the problems that cannot meet the urgent needs of high energy density energy storage devices, achieve the suppression of shuttle effect, improve discharge capacity, The effect of high conductivity

Active Publication Date: 2019-06-14
北京中瑞泰新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the traditional Li-ion battery is limited by the theoretical specific capacity of positive electrode materials, including lithium cobalt oxide, lithium iron phosphate, spinel lithium manganese oxide, ternary materials and negative electrode material graphite. The current energy density can only be Reaching 150-200Wh / kg is far from meeting people's urgent needs for high energy density energy storage devices

Method used

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  • Metal intercalation molybdenum oxide material as well as preparation method and application thereof
  • Metal intercalation molybdenum oxide material as well as preparation method and application thereof
  • Metal intercalation molybdenum oxide material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] This embodiment provides a tin-intercalated molybdenum oxide material and a preparation method thereof, and the specific steps are as follows:

[0046] 1. Preparation of molybdenum oxide precursor

[0047] Add 0.2g of molybdenum powder into a 100mL hydrothermal reaction kettle, then add 20mL of deionized water and stir for 10min, then add 10mL of hydrogen peroxide, stir for 30min, transfer to an oven at 160°C for 10h, and then place the mixture at a low temperature of 0°C Cool down for 24 hours, wash the obtained solution three times with deionized water and ethanol respectively, and obtain a molybdenum oxide powder with a thickness of about 10 nm;

[0048] 2. Preparation of tin-intercalated molybdenum oxide

[0049] The obtained molybdenum oxide powder was uniformly dispersed in an acetone solution, 20 mg of stannous chloride was added while stirring, and 40 mg of tartaric acid was added, and reacted at 80° C. for 1 h. Naturally cooled to room temperature, washed wit...

Embodiment 2

[0051] This example provides a molybdenum oxide positive electrode material for a lithium-sulfur battery based on intercalation technology and its preparation. The specific steps are as shown in Example 1, and the difference is:

[0052] The molar ratio of tin to the molybdenum oxide is 0.028:1.

Embodiment 3

[0054] This example provides a molybdenum oxide positive electrode material for a lithium-sulfur battery based on intercalation technology and its preparation. The specific steps are as shown in Example 1, and the difference is:

[0055] The molar ratio of tin to the molybdenum oxide is 0.050:1.

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Abstract

The invention relates to a metal intercalation molybdenum oxide material as well as a preparation method and application thereof. The preparation method comprises a step of performing intercalation reaction on molybdenum oxide powder and one of metal salt or metal complex, so that a metal intercalation molybdenum oxide material is obtained, wherein the metal is one or more than one of tin, iron, cobalt, nickel, gold, silver, platinum and palladium, and the metal salt or metal complex is provided in chloride, nitrate and carbonyl complex forms; and a mass ratio of the metal salt or metal complex to molybdenum oxide is 1:(10-100). The prepared material can be used for preparing an electrode material, the electrode material is applicable to organic electrolyte, and the electrode material hasrelatively strong adsorbability and high conductivity on lithium polysulfide, thereby being beneficial to prolonging cycle life of a lithium-sulfur (Li-S) battery and play of rate capability of the lithium sulfur battery. The method provided by the invention is environmentally friendly, simple in process, low in raw material price and simple in preparation flow and is applicable to large-scale preparation of a Li-S battery cathode material.

Description

technical field [0001] The invention relates to the field of metal oxide materials, in particular to a metal intercalation molybdenum oxide material and its preparation method and application. Background technique [0002] After entering the 21st century, energy and the environment have always been the focus of human attention. With the long-term exploitation and utilization of non-renewable energy sources such as oil, coal and natural gas, these non-renewable energy sources are facing the danger of depletion, and the environmental pollution problems are becoming more and more serious. Vigorously developing new energy and renewable clean energy is the primary task of mankind's current energy work. Green and environmentally friendly secondary energy storage devices represented by lithium-ion (Li-ion) batteries have attracted extensive attention from researchers. Since its use in 1991, Li-ion batteries have been gradually promoted from portable power sources to applications ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/36H01M4/38H01M4/48H01M10/052
CPCY02E60/10
Inventor 宫勇吉杨伟伟翟朋博江华宁陈乾肖京
Owner 北京中瑞泰新材料有限公司
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