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Method for preparing sulphur-supported porous carbon lithium battery electrode material by using waste polyurethane plastic

A technology of electrode material and porous carbon, which is applied in the field of preparation of electrode materials for lithium-ion power batteries, can solve problems such as harsh experimental conditions, failure to realize large-scale commercial production, and complicated preparation methods, and achieve mild experimental conditions and excellent preparation methods. The effect of simplicity and cheap raw materials

Inactive Publication Date: 2014-12-24
SHANGHAI UNIV
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Problems solved by technology

Although the above methods can inhibit the dissolution of polysulfides to a certain extent and improve the cycle performance of electrode materials, large-scale commercial production has not been realized due to the complicated preparation methods and harsh experimental conditions.

Method used

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  • Method for preparing sulphur-supported porous carbon lithium battery electrode material by using waste polyurethane plastic
  • Method for preparing sulphur-supported porous carbon lithium battery electrode material by using waste polyurethane plastic
  • Method for preparing sulphur-supported porous carbon lithium battery electrode material by using waste polyurethane plastic

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Embodiment Construction

[0020] Specific embodiments of the present invention are described below.

[0021] A method for preparing a porous carbon-loaded lithium battery electrode material with waste polyurethane plastics, which has the following process and steps: take 10 g of pulverized waste polyurethane plastics and 30 g of potassium carbonate powder, mix them well, and put them into a porcelain crucible Inside, cover the porcelain crucible, put the crucible into the muffle furnace heated to 800 ℃ in advance, take out the porcelain crucible after reacting for 60 minutes, pour the solid in the porcelain crucible into the boiling water prepared in advance, and boil for 10 minutes . Suction filtration with Buchner funnel, the obtained solid product was repeatedly washed with deionized water until neutral, and dried in an oven for 24 h. Finally, the dried powder was ground into a uniform powder with an agate mortar for later use.

[0022] Take 6 g of sublimated sulfur and 1.5 g of the above-mentione...

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Abstract

The invention discloses a method for preparing a sulphur-supported porous carbon lithium battery electrode material by using waste polyurethane plastic. The method comprises the following steps: with sublimed sulphur, potassium carbonate and waste polyurethane as raw materials, performing high-temperature heat treatment on the raw materials in a muffle furnace to prepare porous carbon, and performing hot melting and mechanical dispersing to prepare the sulphur-supported porous carbon lithium battery electrode material active substance. The method is characterized in that elemental sulphur is calcined and melted to enter the pores of porous carbon, electrode material slurry is prepared through a mechanical dispersing method, and finally drying by a vacuum drying oven is carried out to obtain the sulphur-supported porous carbon composite electrode material. Through an electrochemical test, the novel sulphur-supported porous carbon composite electrode material is high in cyclic stability, remarkable in rate performance and simple to prepare, is prepared from cheap raw materials, and has a commercial potential; in addition, test conditions are mild.

Description

Technical field [0001] The present invention involves a method of preparing porous carbon loaded lithium battery electrode materials with abandoned polyurethane plastic, which belongs to the field of lithium ion power battery electrode preparation technology. Background technique [0002] With the development of society, people's awareness of environmental protection is getting stronger and stronger, and electric vehicles (EV) as a new type of green energy have attracted more and more attention.As a dynamic lithium -ion battery, it has also become a technical hotspot. In order to meet the needs of electric vehicles, preparation has a high capacity, high energy density, and good circulatory performance.Sulfin's ultra -high theoretical compared capacity (1675 mAH / G) and theoretical ratio energy density (2500 kW / kg) are most likely to be the next generation as a lithium ion battery for electric vehicles.The sulfur itself has two major defects as electrode materials.One is that the s...

Claims

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Application Information

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IPC IPC(8): H01M4/583
CPCH01M4/0404H01M4/139H01M4/364H01M4/38H01M4/625H01M10/052Y02E60/10
Inventor 王勇肖索刘松杭金菲英郭文翔
Owner SHANGHAI UNIV
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