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A kind of magnesium ion battery material and preparation method thereof, magnesium ion battery composite material and preparation method thereof

A technology of magnesium ion battery and composite material, applied in the field of magnesium ion battery material and its preparation, can solve the problems of detachment, limited number of ions, inability to realize fast charging and the like

Active Publication Date: 2020-10-13
ZHENGZHOU NEW CENTURY MATERIALS GENOME INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, also due to the strong interaction between Mg and S, once Mg and S are combined, it is difficult for Mg ions to be completely separated from S during charging, and fast charging cannot be achieved.
In addition, the layered sulfide MoS 2 , TiS 2 Other systems accommodate Mg 2+ The number of ions is limited, making it difficult to achieve its high energy density
Furthermore, in Mg 2+ The engineering of ion intercalation and extraction will cause drastic changes in the volume of the corresponding system, making it easy to detach from the current collector, resulting in poor battery performance

Method used

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  • A kind of magnesium ion battery material and preparation method thereof, magnesium ion battery composite material and preparation method thereof
  • A kind of magnesium ion battery material and preparation method thereof, magnesium ion battery composite material and preparation method thereof
  • A kind of magnesium ion battery material and preparation method thereof, magnesium ion battery composite material and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0071] The magnesium ion battery material of the present embodiment, chemical formula is Mg 0.25 MoS 2 .

[0072] The preparation method of the magnesium ion battery material of the present embodiment comprises the steps:

[0073] 1) Weigh ammonium molybdate (H 24 Mo 7 N 6 o 24 4H 2 O), magnesium chloride (MgCl 2) and thioacetamide (C 2 h 5 NS) spare. Ammonium molybdate (H 24 Mo 7 N 6 o 24 4H 2 O), magnesium chloride (MgCl 2 ) and thioacetamide (C 2 h 5 NS) in a molar ratio of 0.095:1.34:2.14.

[0074] Ammonium molybdate (H 24 Mo 7 N 6 o 24 4H 2 O), magnesium chloride (MgCl 2 ) and thioacetamide (C 2 h 5 NS) into a 50mL polytetrafluoroethylene reactor, add 30mL of deionized water to the reactor, and stir for 30 minutes at room temperature. After the reactants are completely dissolved, seal the reactor and put it in a blast drying oven at 200°C In, react 24h. The reaction kettle was naturally cooled to room temperature, and the reaction mixture in th...

Embodiment 2

[0080] The magnesium ion battery material of the present embodiment, chemical formula is Mg 0.5 MoS 2 .

[0081] The preparation method of the magnesium ion battery material of the present embodiment comprises the steps:

[0082] 1) Weigh ammonium molybdate (H 24 Mo 7 N 6 o 24 4H 2 O), magnesium chloride (MgCl 2 ) and thioacetamide (C 2 h 5 NS) spare. Ammonium molybdate (H 24 Mo 7 N 6 o 24 4H 2 O), magnesium chloride (MgCl 2 ) and thioacetamide (C 2 h 5 NS) in a molar ratio of 0.095:0.67:2.14.

[0083] Ammonium molybdate (H 24 Mo 7 N 6 o 24 4H 2 O), magnesium chloride (MgCl 2 ) and thioacetamide (C 2 h 5 NS) into a 50mL polytetrafluoroethylene reactor, add 30mL of deionized water to the reactor, and stir for 30 minutes at room temperature. After the reactants are completely dissolved, seal the reactor and put it in a blast drying oven at 200°C In, react 24h. The reaction kettle was naturally cooled to room temperature, and the reaction mixture in th...

Embodiment 3

[0089] The magnesium ion battery material of the present embodiment, chemical formula is Mg 0.75 MoS 2 .

[0090] The preparation method of the magnesium ion battery material of the present embodiment comprises the steps:

[0091] 1) Weigh ammonium molybdate (H 24 Mo 7 N 6 o 24 4H 2 O), magnesium chloride (MgCl 2 ) and thioacetamide (C 2 h 5 NS) spare. Ammonium molybdate (H 24 Mo 7 N 6 o 24 4H 2 O), magnesium chloride (MgCl 2 ) and thioacetamide (C 2 h 5 NS) in a molar ratio of 0.095:0.45:2.14.

[0092] Ammonium molybdate (H 24 Mo 7 N 6 o 24 4H 2 O), magnesium chloride (MgCl 2 ) and thioacetamide (C 2 h 5 NS) into a 50mL polytetrafluoroethylene reactor, add 30mL of deionized water to the reactor, and stir for 30 minutes at room temperature. After the reactants are completely dissolved, seal the reactor and put it in a blast drying oven at 200°C In, react 24h. The reaction kettle was naturally cooled to room temperature, and the reaction mixture in t...

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Abstract

The invention relates to a magnesium ion battery material, a preparation method of the magnesium ion battery material, a magnesium ion battery composite material and a preparation method of the magnesium ion battery composite material, and belongs to the technical field of a magnesium ion battery. The magnesium ion battery material has the chemical formula of MgaAbMo1-mXmS2YnZc, wherein the a is greater than or equal to 0 but smaller than or equal to 1; the A is one kind of materials from Li and Na; the b is greater than or equal to 0 but smaller than or equal to 1; the X is one or several kinds of materials from Ti, Sn, V, Fe, Nb, Zn, Cu, W, Ni and Co; the m is greater than or equal to 0 but smaller than or equal to 0.15; the Y is one or several kinds of materials from O, C, N, S, Se andTe; the n is greater than or equal to 0 but smaller than or equal to 0.10; the Z is halogen; the c is greater than or equal to 0 but smaller than or equal to 1. The magnesium ion battery material provided by the invention has good magnesium ion electric conduction performance and thermal mechanical stability; the diffusion activation energy is low; the current carrier electric conductivity is high; in addition, good electrochemical compatibility is realized with the metal Mg electrodes.

Description

technical field [0001] The invention relates to a magnesium ion battery material and a preparation method thereof, a magnesium ion battery composite material and a preparation method thereof, and belongs to the technical field of magnesium ion batteries. Background technique [0002] At present, lithium-ion batteries are widely used in fields related to portable rechargeable devices or high-power electric vehicles. However, the lithium reserves on the earth are not rich enough to meet the growing demand, and there is a potential crisis in the sustainable development of lithium-ion batteries. Therefore, based on the abundant metal elements on the earth, it is imminent to develop the next generation of metal-ion batteries, such as using Na + , Mg 2+ 、Al 3+ and Zn 2+ metal ion batteries. [0003] Magnesium-ion batteries have attracted more and more attention in recent years. The storage capacity of magnesium is 1000 times that of lithium, and the price is only 7% of that o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/36H01M4/58
CPCH01M4/364H01M4/5815Y02E60/10
Inventor 邵国胜王卓张向丹
Owner ZHENGZHOU NEW CENTURY MATERIALS GENOME INST CO LTD
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