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Ruthenium-modified carbon fluoride material, and preparation method and application thereof

A technology of carbon fluoride and positive electrode material, applied in the direction of organic electrolyte battery, electrical components, battery electrodes, etc., can solve the problem of insignificant effect, achieve high-rate performance improvement, large industrial and commercial value, and simple preparation method. Effect

Active Publication Date: 2018-04-13
BEIJING UNIV OF TECH
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  • Description
  • Claims
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Problems solved by technology

The above-mentioned improvement method has improved the performance of lithium carbon fluoride battery to a certain extent, but the effect is not significant

Method used

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  • Ruthenium-modified carbon fluoride material, and preparation method and application thereof
  • Ruthenium-modified carbon fluoride material, and preparation method and application thereof

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Embodiment 1

[0024] (1) the CF X The cathode material was dispersed in a mixed solution of deionized water and ethanol (volume ratio 1:1), and stirred evenly.

[0025] (2) RuCl 3 Add to the suspension obtained in step (1) in a certain proportion with carbon fluoride, then add NaOH solution to adjust the pH, keep the pH at 8-9, and continue stirring for 6 hours.

[0026] (3) Suction filter the suspension obtained in step (2), and wash with deionized water and ethanol several times to form a mixture.

[0027] (4) Drying the mixture in step (3) to obtain a mixture powder.

[0028] (5) The mixture powder obtained in step (4) is placed in an atmosphere furnace, subjected to high-temperature treatment, and lowered to room temperature to obtain ruthenium-modified carbon fluoride.

[0029] The ratio of deionized water and ethanol in step 1 is 1:1, 15mL respectively

[0030] The NaOH concentration in step 2 is 0.1mol / L

[0031] The drying temperature in step 4 is 80°C

[0032] The high temper...

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Abstract

The invention discloses a ruthenium-modified carbon fluoride material, and a preparation method and an application thereof, and belongs to the technical field of a battery. A synthetic process comprises the steps of (1) enabling a CF<X> positive electrode material to be dispersed into a mixed solution of deionized water and ethyl alcohol; (2) adding RuCl<3> and carbon fluoride into a suspension liquid based on a certain proportion, and next, adding a NaOH solution to adjust pH to be 8-9; (3) performing suction filtration on the suspension liquid, and performing washing by deionized water and ethyl alcohol for multiple times to form a mixture; (4) performing drying on the mixture to obtain mixture powder; and (5) putting the mixture powder into an atmosphere furnace, performing high-temperature treatment, and cooling to the room temperature to obtain the ruthenium-modified carbon fluoride material. By virtue of the preparation method, metal ruthenium is introduced successfully, so thatthe discharging voltage platform of a lithium carbon fluoride battery is greatly improved, and voltage lagging is lowered; and particularly, in high-rate discharge, the discharging voltage platform and the specific capacity of the ruthenium-modified carbon fluoride material are far higher than those of the original carbon fluoride.

Description

technical field [0001] The invention belongs to the technical field of batteries, in particular to a ruthenium-modified carbon fluoride material, its preparation and application. Background technique [0002] With the deterioration of resource and environmental problems, it is imminent to develop green, safe, clean and renewable new energy sources. Electrochemical battery is an efficient and stable energy storage system. Lithium battery is widely used due to its advantages of high specific energy, long cycle life, high discharge specific capacity, stable voltage, low consumption, pollution-free, and excellent low-temperature performance. In commercial, military, civilian and other fields. Lithium primary battery, also known as lithium primary battery, refers to a primary battery with metal lithium as the anode, which is not rechargeable. At present, lithium primary batteries mainly include lithium manganese dioxide batteries, lithium carbon fluoride batteries and lithium th...

Claims

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Application Information

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IPC IPC(8): H01M4/36H01M4/583H01M4/38H01M6/16
CPCH01M4/362H01M4/38H01M4/5835H01M6/16
Inventor 张丽娟张伶潇付予梁菊梅郭雨萌
Owner BEIJING UNIV OF TECH
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