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Application method of titanium magnesium phosphate in anode material of chargeable magnesium battery

A technology of titanium magnesium phosphate and positive electrode materials, applied in the direction of battery electrodes, circuits, electrical components, etc., to achieve the effects of high discharge voltage, good rate performance, and high capacity

Inactive Publication Date: 2013-02-13
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the application of titanium magnesium phosphate as a cathode material for rechargeable magnesium batteries has not yet been reported.

Method used

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  • Application method of titanium magnesium phosphate in anode material of chargeable magnesium battery
  • Application method of titanium magnesium phosphate in anode material of chargeable magnesium battery
  • Application method of titanium magnesium phosphate in anode material of chargeable magnesium battery

Examples

Experimental program
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Effect test

Embodiment 1

[0023] Grind titanium magnesium phosphate finely, add 1 part of super conductive carbon black as conductive agent and 1 part of binder to 8 parts of titanium magnesium phosphate, stir evenly, coat on copper foil, and put it in an oven at 80°C After 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 electrode, which is then transferred to an argon glove box and sealed with metal. Magnesium is the negative electrode, 0.25mol L -1 Mg(AlCl 2 BuEt) 2 / THF solution is used as the electrolyte, which is assembled into a rechargeable magnesium battery. Its cyclic voltammetry curve is as figure 1 As shown, the scanning speed is 0.5mV·s -1 . Depend on figure 1 It can be seen that titanium magnesium phosphate has electrochemical activity. figure 2 The charging test results of its 27th lap, by figure 2 As shown, the charge and discharge current density in the te...

Embodiment 2

[0025] Grind titanium magnesium phosphate finely, add 1 part of super conductive carbon black as conductive agent and 1 part of binder to 8 parts of titanium magnesium phosphate, stir evenly, coat on copper foil, and put it in an oven at 80°C After drying, punch a pole piece with a punch with a diameter of 12 mm, press it under a pressure of 1 MPa, and dry it in a vacuum oven at 100 ° C for 4 hours to obtain a positive electrode, which is then transferred to an argon glove box and sealed with metal. Magnesium is the negative electrode, add 0.4mol L -1 (PhMgCl) 2 -AlCl 3 / tetrahydrofuran solution electrolyte, assembled into a rechargeable magnesium battery. Figure 5 is the current density of 1.20mA·g -1 , the discharge data of the first cycle of titanium magnesium phosphate; Figure 5 It can be seen that there is a discharge platform around 1V.

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Abstract

The invention discloses an application method of titanium magnesium phosphate in an anode material of a chargeable magnesium battery. The method comprises that the titanium magnesium phosphate with the chemical structural formula of Mg3Ti4(PO4)6 serves as a positive electrode, magnesium metal serves as a negative electrode, a Mg(AlCl2BuEt)2 / tetrahydrofuran or (PhMgCl)2-AlCl3 / tetrahydrofuran solution serves as an electrolyte solution, and the chargeable magnesium battery is formed. The magnesium battery produced by the application method has the advantages of being high in capacity, high in discharge voltage and good in rate performance.

Description

technical field [0001] The invention relates to an application method of inorganic materials in battery cathode materials, in particular to an application method of titanium magnesium phosphate in rechargeable magnesium battery anode materials, and belongs to the field of rechargeable magnesium batteries. Background technique [0002] In recent years, problems such as energy shortage and environmental pollution have seriously restricted the development of contemporary human society. As one of the most abundant light metal elements on the earth, magnesium is widely used in various fields due to its good physical, chemical and mechanical properties. With the great success of lithium-ion batteries, magnesium, which is in a diagonal position with lithium on the periodic table of elements, is similar to lithium in its ionic radius and chemical properties, so rechargeable magnesium batteries with magnesium as the negative electrode are receiving more and more attention. more atte...

Claims

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Application Information

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IPC IPC(8): H01M4/58H01M4/62
CPCY02E60/12Y02E60/10
Inventor 努丽燕娜卞沛文陈强杨军王久林
Owner SHANGHAI JIAO TONG UNIV
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