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Use of organic sulfur polymer in secondary magnesium cell anode material

A technology for positive electrode materials and polymers, which is applied in the application field of organic sulfur polymers in secondary magnesium battery positive electrode materials, can solve problems such as preparation difficulties, and achieve the effects of increasing specific capacity, increasing conductivity, and increasing specific capacity

Inactive Publication Date: 2006-12-27
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, Mo 3 S 4 It is an ideal material at present, but it is difficult to prepare, and it needs to be synthesized at high temperature under vacuum or hydrogen atmosphere (D.Aurbach, Z.Lu, A.Schechter, Y.Gofer, H.Gizbar, R.Turgeman, Y.Cohen, M. Moshkovich, E. Levi, Nature, 2000, 407:724)

Method used

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  • Use of organic sulfur polymer in secondary magnesium cell anode material
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Examples

Experimental program
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Effect test

Embodiment 1

[0020] Add 1.63 mg of acetylene black and 1.63 mg of polytetrafluoroethylene to the finely ground 20 mg of partially dithiopolyaniline (see literature for the synthesis process of the material: Tang Zhiyuan, Xu Guoxiang, Polymer Materials Science and Engineering, 2003, 19: 175). Emulsion (concentration: 60wt%), mixed into a paste, pressed on the copper foil under 4MPa pressure, placed in an oven with a temperature of 80°C for drying, punched into pole pieces with a punch of Φ12.5mm, and punched into pole pieces at a pressure of 1MPa After tableting under pressure, put it in a vacuum oven at about 100°C and dry it for 4 hours to obtain 1.5 mg of positive electrode; then transfer it to an argon glove box, use metal magnesium as negative electrode, 0.25mol L -1 Mg[AlCl 2 (C 4 h 9 )(C 2 h 5 )] 2 / Tetrahydrofuran is used as the electrolyte to make a button-type secondary magnesium battery. The test charge and discharge current density is 25mA·g -1 , The charge and discharge...

Embodiment 2

[0022]Add 1.63 mg of acetylene black and 1.63 mg of polytetrafluoroethylene emulsion to 20 mg of finely ground tetrathiodianiline (see literature for the synthesis process of materials: Tang Zhiyuan, Xu Guoxiang, Yu Bitao, Liu Chunyan, Science and Technology Progress, 2001, 8:28). (Concentration: 60wt%), mix it into a paste, press it on the copper foil under the pressure of 4MPa, put it in an oven with a temperature of 80°C, and punch it into a pole piece with a punch of Φ12.5mm. After pressing down, place it in a vacuum oven at about 100°C for 4 hours to dry to obtain a 1.5 mg positive electrode; then transfer it to an argon glove box, use metal magnesium as the negative electrode, 0.25mol L -1 Mg[AlCl 2 (C 4 h 9 )(C 2 h 5 )] 2 / Tetrahydrofuran is used as the electrolyte to make a button-type secondary magnesium battery. The test charge and discharge current density is 25mA·g -1 , The charge and discharge voltage range is 0.3V ~ 2.0V. The first discharge capacity is ...

Embodiment 3

[0024] Add 1.63mg of acetylene black and 1.63mg polytetrafluoroethylene emulsion (concentration: 60wt%), mix it into a paste, press it on the copper foil under the pressure of 4MPa, put it in an oven with a temperature of 80°C and dry it, and punch it with a punch of Φ12.5mm After the pole piece is pressed under a pressure of 1MPa, put it in a vacuum oven at about 100°C and dry for 4 hours to obtain a 1.5mg positive electrode; then transfer it to an argon glove box, use metal magnesium as the negative electrode, and 0.25mol L -1 Mg[AlCl 2 (C 4 h 9 )(C 2 h 5 )] 2 / Tetrahydrofuran is used as the electrolyte to make a button-type secondary magnesium battery. The test charge and discharge current density is 25mA·g -1 , The charge and discharge voltage range is 0.3V ~ 2.0V. Two discharge plateaus appeared at around 1.5V and 1.0V, and the discharge capacity increased with the increase of the sulfur mass fraction in the synthesis product. When the sulfur mass fraction was 78...

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Abstract

The invention discloses the application of organic sulfur in second magnesium battery anode material, employing organic sulfur as anode, magnesium as cathode, and Mg[AlCl2(C4H9)(C2H5)]2 / tetrahydrofuran as electrolytic solution to form second magnesium battery. The application of organic sulfur as anode material for second magnesium battery, is characterized by large capacity, high voltage plat, and first discharge capacity reaching 110 mAh / g, stable discharge voltage plat reaching about 1.6 V; and by simple process, low cost, and designable structure compared with Mo3S4 for current second magnesium battery.

Description

technical field [0001] The invention relates to the application of a polymer in battery cathode materials, in particular to the application of an organic sulfur polymer in secondary magnesium battery cathode materials. Background technique [0002] With the decreasing reserves of fossil fuels represented by the three main energy sources of coal, oil and natural gas, chemical power sources have received great attention in the development and utilization of high-tech devices, green and low-energy transportation, and renewable energy. Among the existing primary and secondary batteries, lithium batteries have the highest energy density, so they are widely researched and applied. However, due to the high activity of metal lithium, its reliability and safety are difficult to be guaranteed, especially in large-scale power lithium secondary batteries, there are still many safety hazards. Therefore, traditional toxic and low-capacity lead-acid or nickel-cadmium batteries are still u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G73/02C08G73/06C08G61/12H01M4/00
Inventor 努丽燕娜杨军谢夫苏
Owner SHANGHAI JIAO TONG UNIV
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