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Organic sulfur electrode material and preparation method thereof

An electrode material, organic sulfur technology, applied in battery electrodes, circuits, electrical components, etc., can solve the problems of insulation, can not effectively improve the specific capacity of lithium-sulfur batteries, low conductivity, etc., to reduce shedding, improve cycle stability, The effect of improving the magnification performance

Active Publication Date: 2019-09-17
JIAXING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, since most of the sulfur-rich copolymers have low conductivity or insulation, this makes the active sulfur loading only 1 mg / cm 2 , or even lower
Based on this method, the specific capacity of lithium-sulfur batteries cannot be effectively improved.

Method used

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  • Organic sulfur electrode material and preparation method thereof
  • Organic sulfur electrode material and preparation method thereof
  • Organic sulfur electrode material and preparation method thereof

Examples

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Effect test

Embodiment 1

[0032]A kind of organic sulfur electrode material, this electrode material is the copolymer of sulfur, 1,3-diisopropylbenzene, p-aminostyrene and aniline, and its expression is Poly(S a％ -r-DIB b％ )-g-PANI c％ , wherein: a%, b% and c% respectively represent the mass percentages of sulfur, 1,3-diisopropylbenzene and polyaniline, and a=90, b=5, c=5.

[0033] The preparation method of the above-mentioned organosulfur electrode material comprises the following steps:

[0034] (1) Synthesis of Poly(S-r-DIB)-AS: Under argon atmosphere, add 4 g (0.125 mol) of sublimed sulfur to a round-bottomed flask equipped with a magnetic stirrer, and then place the flask in a preheated state to 185°C In an oil bath, when the sublimated sulfur melts into a liquid state and turns cherry red, add 0.22g of 1,3-diisopropylbenzene (DIB), and keep stirring for about 8min until the product is in a vitrified state; then add to the mixture 0.22g of p-aminostyrene (AS), and continue to stir the reaction f...

Embodiment 2

[0037] A kind of organic sulfur electrode material, this electrode material is the copolymer of sulfur, 1,3-diisopropylbenzene, p-aminostyrene and aniline, and its expression is Poly(S a％ -r-DIB b％ )-g-PANI c％ , wherein: a%, b% and c% respectively represent the mass percentages of sulfur, 1,3-diisopropylbenzene and polyaniline, and a=95, b=3, c=2.

[0038] The preparation method of the above-mentioned organosulfur electrode material comprises the following steps:

[0039] (1) Synthesis of Poly(S-r-DIB)-AS: Under argon atmosphere, add 4 g (0.125 mol) of sublimed sulfur to a round-bottomed flask equipped with a magnetic stirrer, and then place the flask in a preheated state to 180°C In an oil bath, when the sublimated sulfur melts into a liquid state and turns cherry red, add 0.13g of 1,3-diisopropylbenzene (DIB), and continue stirring for about 5min until the product is in a vitrified state; then add to the mixture 0.08g of p-aminostyrene (AS), and continue to stir the react...

Embodiment 3

[0042] A kind of organic sulfur electrode material, this electrode material is the copolymer of sulfur, 1,3-diisopropylbenzene, p-aminostyrene and aniline, and its expression is Poly(S a％ -r-DIB b％ )-g-PANI c％ , wherein: a%, b% and c% respectively represent the mass percentages of sulfur, 1,3-diisopropylbenzene and polyaniline, and a=85, b=10, c=5.

[0043] The preparation method of the above-mentioned organosulfur electrode material comprises the following steps:

[0044] (1) Synthesis of Poly(S-r-DIB)-AS: Under an argon atmosphere, add 4 g (0.125 mol) of sublimed sulfur to a round-bottomed flask equipped with a magnetic stirrer, and then place the flask in a preheated state to 190°C In an oil bath, when the sublimated sulfur melts into a liquid state and turns cherry red, add 0.47g of 1,3-diisopropylbenzene (DIB), and keep stirring for about 10min until the product is in a vitrified state; then add to the mixture 0.24g of p-aminostyrene (AS), and continue to stir for 3h, ...

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Abstract

The invention discloses an organic sulfur electrode material and a preparation method thereof. The electrode material is a copolymer of sulfur, 1,3-diisopropylbenzene, p-aminostyrene and aniline, and has an expression of Poly(Sa%-r-DIBb%)-g-PANIc%, wherein a%, b%, and c% represent the mass percentages of S, DIB, and PANI, respectively. The preparation method of the electrode material comprises: firstly melting the sublimed sulfur; then successively adding DIB and AS to the sublimed sulfur, stirring the mixture for a period of time, and quenching the reaction with liquid nitrogen to obtain Poly(S-r-DIB)-AS; dissolving the Poly(S-r-DIB)-AS in N, N-dimethylformamide containing HCl, then adding aniline and ammonium persulfate, stirring the mixture for a period of time to obtain Poly(S-r-DIB)-g-PANI. The electrode material prepared by the method of the invention can solve the low specific capacity of the lithium-sulfur battery.

Description

technical field [0001] The invention belongs to the technical field of electrode materials, in particular to an organic sulfur electrode material and a preparation method thereof. Background technique [0002] With the rapid growth of the global economy and the gradual improvement of human living standards, people's demand and dependence on energy are getting higher and higher. In addition, with the increasing use of traditional non-renewable energy sources such as coal, oil, and natural gas, excessive combustion and consumption have also brought serious environmental pollution, such as the greenhouse effect, acid rain, and melting glaciers. Environmental issues and energy issues have prompted people to seek and develop clean and environmentally friendly new energy sources. It is intermittent and discontinuous, and requires high-efficiency electrochemical energy storage to cooperate with it. Therefore, the research and development of cheap and efficient electrochemical ene...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/36H01M4/60
CPCH01M4/364H01M4/60H01M4/606Y02E60/10
Inventor 王鹏季山
Owner JIAXING UNIV
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