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Positive electrode material capable of improving capacitance of lithium battery

A positive electrode material and capacitance technology, which is applied in the research and development of lithium batteries, can solve the problems of small capacitance of positive electrode materials of sulfide batteries, achieve good mechanical properties, solve the effects of small capacitance and high conductivity

Inactive Publication Date: 2018-04-20
安徽零度新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to address the existing problems and provide a positive electrode material that can increase the capacity of lithium batteries, which not only solves the problem of small capacity of positive electrode materials in sulfide batteries, but also can work at higher temperatures without corrosion

Method used

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  • Positive electrode material capable of improving capacitance of lithium battery

Examples

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Effect test

Embodiment 1

[0016] A kind of cathode material that can improve lithium battery capacity, its preparation method comprises the following steps:

[0017] (1) Take 150 ml of deionized water and add it to the distillation device, heat and distill to collect the distilled water, pour the newly collected and prepared distilled water into a four-necked reaction flask equipped with an electric stirrer, a condenser tube and a thermometer, and heat it with an oil bath To 70°C, add 0.18 grams of polyvinyl alcohol, stir to dissolve;

[0018] (2) After the polyvinyl alcohol is completely dissolved, lower the heating temperature to 60°C, then add 4.0ml of ethylenediaminetetraacetic acid and 2.5g of furfural acetone resin in turn, stir for 15 minutes, then blow nitrogen, and then add 8 gram of elemental sulfur, reacted for 2 hours at 600 rev / min, reduced stirring speed and reaction temperature, added 0.2 gram of azobisisobutyronitrile in the reaction solution, continued to react and terminated the react...

Embodiment 2

[0024] A kind of cathode material that can improve lithium battery capacity, its preparation method comprises the following steps:

[0025] (1) Take 155 ml of deionized water and add it to the distillation device, heat and distill to collect the distilled water, pour the newly collected and prepared distilled water into a four-necked reaction flask equipped with an electric stirrer, a condenser tube and a thermometer, and heat it with an oil bath To 75°C, add 0.19 grams of polyvinyl alcohol, stir to dissolve;

[0026] (2) After the polyvinyl alcohol is completely dissolved, lower the heating temperature to 62°C, then add 4.5ml of ethylenediaminetetraacetic acid and 2.8g of furfural acetone resin in turn, stir for 18 minutes, then blow nitrogen, and then add 9 Gram elemental sulfur, reacted 2.5 hours under 650 revs / min, reduced stirring speed and temperature of reaction, added 0.25 gram of azobisisobutyronitrile in reaction solution, continued to react and terminated reaction a...

Embodiment 3

[0032] A kind of cathode material that can improve lithium battery capacity, its preparation method comprises the following steps:

[0033] (1) Take 160 ml of deionized water and add it to the distillation device, heat and distill to collect the distilled water, pour the newly collected and prepared distilled water into a four-necked reaction flask equipped with an electric stirrer, a condenser tube and a thermometer, and heat it with an oil bath To 80°C, add 0.20 g of polyvinyl alcohol, stir to dissolve;

[0034] (2) After the polyvinyl alcohol is completely dissolved, lower the heating temperature to 65°C, then add 5.0ml of ethylenediaminetetraacetic acid and 3.0g of furfural acetone resin in turn, stir for 20 minutes, then blow nitrogen, and then add 10 gram of elemental sulfur, reacted for 3 hours at 700 rev / min, reduced stirring speed and reaction temperature, added 0.3 gram of azobisisobutyronitrile in the reaction solution, continued to react and terminated the reaction...

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Abstract

The invention relates to the technical field of research and development of a lithium battery, and discloses a positive electrode material capable of improving capacitance of a lithium battery. By adopting a method of compounding polyvinyl alcohol, furfural acetone resin and elementary sulfur, a sulfur-containing composite organic material with a conjugate structure is generated; in a fusion state, the organic material is in contact with a conductive polymer in the molecular level; and after the organic material is adsorbed with an electrolyte, the material has relatively high conductivity andhigh mechanical performance, thereby greatly enlarging the actual area of an electrode action, improving the sulfur utilization rate, increasing the number of times of charging and discharging, solving the problem of low capacitance of the positive electrode material of a sulfide battery, and realizing operation at a relatively high temperature without being corroded.

Description

technical field [0001] The invention belongs to the technical field of research and development of lithium batteries, and in particular relates to a positive electrode material capable of improving the electric capacity of lithium batteries. Background technique [0002] A lithium battery is a primary battery that uses lithium metal or lithium alloy as the negative electrode material and uses a non-aqueous electrolyte solution. It is different from a rechargeable battery. Lithium-ion batteries are different from lithium-ion polymer batteries. The inventor of the lithium battery is Edison. Due to the very active chemical properties of lithium metal, the processing, storage and use of lithium metal have very high environmental requirements. Therefore, lithium batteries have not been used for a long time. With the development of microelectronics technology at the end of the 20th century, miniaturized equipment is increasing day by day, which puts forward high requirements for...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/36H01M4/38H01M4/62H01M10/052
CPCH01M4/362H01M4/38H01M4/62H01M4/624H01M10/052Y02E60/10
Inventor 赵小亮
Owner 安徽零度新能源科技有限公司
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