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Application method of binary metal sulfides in chargeable magnesium battery

A technology of binary metal and application method, applied in secondary batteries, battery electrodes, non-aqueous electrolyte storage batteries, etc., can solve the problems of cumbersome steps and harsh preparation conditions.

Inactive Publication Date: 2013-03-13
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

(Levi D, Lancry E, Gizbar H, et.al. Kinetic and thermodynamic studies of Mg 2+ and Li + ioninsertion into the Mo6S8chevrel phase.J.Electrochem.Soc., 2004,151(7):A1044-A1051), but the preparation conditions are harsh, and the synthesis process needs to use three elements (copper, molybdenum, sulfur) in vacuum or hydrogen Synthesis under high temperature (1000°C) for a long time (60h) in the atmosphere, and the copper element needs to be leached out in the process, the steps are cumbersome

Method used

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  • Application method of binary metal sulfides in chargeable magnesium battery
  • Application method of binary metal sulfides in chargeable magnesium battery
  • Application method of binary metal sulfides in chargeable magnesium battery

Examples

Experimental program
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Effect test

Embodiment 1

[0027] Grind nickel sulfide finely, add 1.5 parts of acetylene black as conductive agent and 1 part of polyvinylidene fluoride to 7.5 parts of nickel sulfide, stir evenly, coat on copper foil, and dry in an oven at 80°C. Use a punch with a diameter of 12mm to punch into a pole piece, 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, then transfer it to an argon glove box, and use metal magnesium as the negative pole , 0.25mol L -1 Mg(AlCl 2 BuEt) 2 / Tetrahydrofuran is used as the electrolyte to make a button-type rechargeable magnesium battery.

[0028] The cyclic voltammetry curve of the button-type rechargeable magnesium battery is as follows: figure 1 As shown, it can be seen that nickel sulfide is electrochemically active. The charging and discharging test results are as follows: figure 2 As shown, the test charge and discharge current density is 1.534mA·g -1 , the discharge capacity is 51.2mAh·g -...

Embodiment 2

[0030] Grind manganese sulfide finely, add 1.5 parts of acetylene black as conductive agent and 1 part of polyvinylidene fluoride to 7.5 parts of manganese sulfide, stir evenly, coat on copper foil, and dry in an oven at 80°C. Use a punch with a diameter of 12mm to punch into a pole piece, 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, then transfer it to an argon glove box, and use metal magnesium as the negative pole , 0.25mol L -1 Mg(AlCl 2 BuEt) 2 / Tetrahydrofuran is used as the electrolyte to make a button-type rechargeable magnesium battery.

[0031] The discharge test results of the button-type rechargeable magnesium battery are as follows: image 3 As shown, the test discharge current density is 2mA·g -1 , the discharge capacity is 39.2mAh·g -1 .

Embodiment 3

[0033] Grind tin sulfide finely, add 1.5 parts of acetylene black as a conductive agent and 1 part of polyvinylidene fluoride to 7.5 parts of tin sulfide, mix well, coat on copper foil, and put it in an oven at 80°C for drying. Use a punch with a diameter of 12mm to punch into a pole piece, 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, then transfer it to an argon glove box, and use metal magnesium as the negative pole , 0.25mol L -1 Mg(AlCl 2 BuEt) 2 / Tetrahydrofuran is used as the electrolyte to make a button-type rechargeable magnesium battery.

[0034] The discharge capacity of the button-type rechargeable magnesium battery can reach 100mAh·g -1 . Compared with comparative example 1, the rechargeable magnesium battery prepared by tin sulfide as positive electrode material in this embodiment can provide 6 S 8 High discharge capacity of rechargeable magnesium batteries prepared as cathode materials...

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Abstract

The invention discloses an application method of binary metal sulfides in a chargeable magnesium battery. The binary metal sulfides comprise nickel sulfide, manganese sulfide, cobalt sulfide, ferric sulfide, tin sulfide, tungsten sulfide, zinc sulfide, vanadic sulfide and the like. The preparation method for preparing the chargeable magnesium battery with the binary metal sulfides as an anode material specifically comprises the steps of: grinding the binary metal sulfides; adding a conductive agent and a bonding agent into the binary metal sulfides, and agitating uniformly and coating on a current collector; placing the current collector in an oven to dry, punching into a pole piece by a punch, tabletting and placing into a vacuum oven to dry so as to obtain the anode material; and using magnesium as a cathode, adding an electrolyte and assembling the chargeable magnesium battery. The chargeable magnesium battery prepared by the method provided by the invention has the advantages of simpleness in preparation, abundance in materials, low cost, and easiness in mass production. The chargeable magnesium battery has a great advantage as a large energy storing battery and has a good application prospect as a green energy resource.

Description

technical field [0001] The invention relates to an application method of a binary metal sulfide in a rechargeable magnesium battery, in particular to an application method of a binary metal sulfide in a positive electrode material of a rechargeable magnesium battery, and belongs to the field of a rechargeable magnesium battery. Background technique [0002] With the increasing demand for energy and the continuous improvement of the requirements for social and economic sustainable development, people pay more and more attention to green power sources with high performance and low cost. Among them, secondary batteries represented by lithium-ion batteries are becoming more and more popular. The more widely it is 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. The ionic radius and chemical properties of metallic magnesium are similar to those of lithium...

Claims

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Application Information

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IPC IPC(8): H01M4/58H01M10/058H01M10/054
CPCY02E60/12Y02E60/10Y02P70/50
Inventor 努丽燕娜陈强卞沛文杨军王久林
Owner SHANGHAI JIAO TONG UNIV
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