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Magnesium secondary battery anode material and application thereof

A technology for magnesium secondary batteries and negative electrode materials, which is applied in the field of electrochemical power sources, can solve problems such as lithium titanate materials not being successfully applied, and achieve the effects of being suitable for large-scale production, easy to obtain raw materials, and high degree of practicality

Active Publication Date: 2013-10-23
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to a series of problems such as particle size and electrolyte, lithium titanate materials have not been successfully applied to magnesium secondary batteries.

Method used

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  • Magnesium secondary battery anode material and application thereof
  • Magnesium secondary battery anode material and application thereof
  • Magnesium secondary battery anode material and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0041] Press Li 2 CO 3 : The molar ratio of tetra-n-butyl titanate=4:5 is weighed, Li 2 CO 3 Soluble in ethanol / water to form a homogeneous solution. The uniformly mixed solution is placed in an oven to dry the solvent. The resulting solid was calcined at 600 °C for 10 h. After the reaction was completed, a powdery solid was obtained. The obtained lithium titanate has a particle size of 20nm, and after it is assembled with magnesium to form a battery, the discharge capacity of the battery reaches 175mA h / g. The battery exhibited good cycle stability.

[0042] The structure was confirmed by powder X-ray diffractometer (Rigaku DmaxrB, CuKα ray). The result is as figure 1 shown. It can be seen from the figure that the impurity peak in the spectrogram is weaker, indicating that the product is relatively pure lithium titanate.

[0043] The particle size scale of the obtained samples was characterized by a transmission electron microscope (TEM, Tecnai F30, working voltage ...

comparative example 1-1

[0049] Other conditions are the same as in Example 1, except that different titanium sources (TiSO 4 ) and the resulting lithium titanate has a particle size of 80nm, and after it is assembled with magnesium into a battery, the battery has no activity.

comparative example 1-2

[0051] The battery preparation process is the same as in Example 1, except that commercial lithium titanate (Adrich Company) is selected. The particle size of this lithium titanate is 1 μm. After it is assembled with magnesium to form a battery, the battery has no activity.

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Abstract

The invention discloses a magnesium secondary battery anode material and an application thereof in a magnesium secondary battery. The magnesium secondary battery anode material exists in a form of particles with specific dimension. When being applied to the magnesium secondary battery, the magnesium secondary battery anode material has high charge-discharge capacity and good cycling stability. The metal magnesium is replaced by the magnesium secondary battery anode material, so that a condition is provided for creatively applying a simple ion salt / organic electrolytic liquid system into the magnesium secondary battery, and the development of high-voltage cathode material and the magnesium secondary all-battery is possible.

Description

technical field [0001] The invention belongs to the field of electrochemical power sources, and in particular relates to a magnesium secondary battery negative electrode material and its application in the magnesium secondary battery. It includes the application of magnesium secondary and high volume energy density energy storage devices assembled by the negative electrode material with various electrolyte systems. Background technique [0002] At present, the energy resources of countries in the world are increasingly in short supply, while the demand for energy is increasing day by day. The problem of seeking a new energy source is before us. With the improvement of people's living standards and the development of battery technology, electric vehicles powered by batteries will gradually replace some fuel vehicles. Among the existing primary and secondary batteries, lithium batteries have high energy density, so they are widely researched and applied. Although lithium-ion...

Claims

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Application Information

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IPC IPC(8): H01M4/485H01M4/131H01M10/054
CPCY02E60/122Y02E60/10
Inventor 郭玉国吴娜吴兴隆殷雅侠万立骏
Owner INST OF CHEM CHINESE ACAD OF SCI
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