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Rechargeable magnesium battery taking oxygen-containing organic matter as cathode material, and preparation method thereof

A technology for positive electrode materials and magnesium batteries, applied in battery electrodes, secondary batteries, circuits, etc., can solve the problems of complex preparation and achieve the effects of simple preparation process, safe system and rich raw materials

Inactive Publication Date: 2012-09-19
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Mo 3 S 4 It is an ideal cathode material for rechargeable magnesium batteries at present, but its preparation is relatively complicated, and it needs to be synthesized at high temperature under vacuum or hydrogen atmosphere

Method used

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  • Rechargeable magnesium battery taking oxygen-containing organic matter as cathode material, and preparation method thereof
  • Rechargeable magnesium battery taking oxygen-containing organic matter as cathode material, and preparation method thereof
  • Rechargeable magnesium battery taking oxygen-containing organic matter as cathode material, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] In 75mg of finely ground poly-4-methacrylic acid-2,2,6,6-tetramethylpiperidine-1-nitroxyl free radical ester, add 15mg of acetylene black as conductive agent, 10mg of polyvinylidene fluoride as adhesive Stir the binder evenly and coat it on the copper foil, put it in an oven with a temperature of 80°C and dry it, punch it into a pole piece with a punch with a diameter of 12mm, press it under a pressure of 1MPa, put it in a 100°C oven Dry in a vacuum oven for 4 hours to obtain a positive electrode sheet, which is then transferred to an argon glove box, with metal magnesium as the negative electrode, 0.25mol L -1 Mg(AlCl 2 BuEt) 2 / Tetrahydrofuran is used as the electrolyte to make a button-type rechargeable magnesium battery. Its cyclic voltammetry curve is as figure 1 As shown, the reduction potential of magnesium is around 1.3V and 0.8V. The charging and discharging test results are as follows: figure 2 As shown, the test charge and discharge current density is ...

Embodiment 2

[0031] Add 15mg of acetylene black as a conductive agent and 10mg of polyvinylidene fluoride as a binder to 75mg of finely ground 3,4,9,10-perylenetetracarboxylic dianhydride, stir well and coat on copper foil , put it in an oven with a temperature of 80°C for drying, punch a pole piece with a punch with a diameter of 12mm, press it under a pressure of 1MPa, and dry it in a vacuum oven at 100°C for 4 hours to obtain a positive pole piece. Transfer to an argon glove box, use metal magnesium as the negative electrode, 0.25mol L -1 Mg(AlCl 2 BuEt) 2 / Tetrahydrofuran is used as the electrolyte to make a button-type rechargeable magnesium battery. Discharge capacity can reach 130mAh·g -1 .

Embodiment 3

[0033] Add 15 mg of acetylene black as a conductive agent and 10 mg of polyvinylidene fluoride as a binder to 75 mg of finely ground poly-3,4,9,10-perylenetetracarboxylic dianhydride ethylenediamine, stir evenly and coat On the copper foil, put it in an oven with a temperature of 80°C and dry it, punch it into a pole piece with a punch with a diameter of 12mm, press it under a pressure of 1MPa, and dry it in a vacuum oven at 100°C for 4 hours to obtain The positive electrode sheet was then transferred to an argon glove box, with metal magnesium as the negative electrode, 0.25mol L -1 Mg(AlCl 2 BuEt) 2 / Tetrahydrofuran is used as the electrolyte to make a button-type rechargeable magnesium battery. Discharge capacity can reach 160mAh·g -1 .

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Abstract

The invention discloses a rechargeable magnesium battery taking oxygen-containing organic matter as a cathode material, and a preparation method of the rechargeable magnesium battery, wherein the oxygen-containing organic matter comprises the components of quinones, phenols, anhydrides derivatives and a compound containing nitro and oxygen radical. The battery and the method have the advantages of being simple in preparation technology, easy to process, environment-friendly and high in regeneration. The rechargeable magnesium battery prepared by the invention has the advantages of being relatively good in structural stability and circulation stability, rich in raw materials, safe in system and the like.

Description

technical field [0001] The invention relates to a rechargeable magnesium battery and a preparation method thereof, in particular to a rechargeable magnesium battery whose cathode material is an oxygen-containing organic matter and a preparation method thereof, belonging to the field of rechargeable magnesium batteries. Background technique [0002] 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 strong activity of lithium, it is difficult to ensure safety when lithium secondary batteries are used for large-capacity storage. Magnesium, which is on the diagonal line of the periodic table with lithium, has similar ionic radius and chemical properties to lithium; compared with lithium, although magnesium has a higher electrode potential (-3.03V for lithium, -2.37V for magnesium (acidic) , -2.69V (alkaline)), the theoretical specific capacity is low (lithium is 3...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/054H01M4/60
CPCY02E60/12Y02E60/10
Inventor 努丽燕娜陈强哈力旦·艾尼杨军王久林
Owner SHANGHAI JIAO TONG UNIV
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