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Anode material for battery

A positive electrode material and battery technology, applied in battery electrodes, secondary batteries, circuits, etc., can solve problems such as difficult to grasp magnesium content

Inactive Publication Date: 2015-08-19
燕宏伟
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, when preparing a magnesium secondary battery, it is often difficult to grasp the content of magnesium in the positive electrode material of the battery.

Method used

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  • Anode material for battery
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  • Anode material for battery

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Embodiment Construction

[0019] Specific embodiments of the present invention will be described in further detail below based on the accompanying drawings. It should be understood that the specific embodiments described here are only examples, and are not intended to limit the protection scope of the present invention.

[0020] see figure 1 , which is a step diagram of a preparation method for a positive electrode material for a battery provided by the present invention. The preparation method of the positive electrode material for battery comprises the following steps:

[0021] Step 101: providing a beaker filled with deionized water;

[0022] Step 102: making cobalt nitrite, nickel nitrite, magnesium nitrite and manganese nitrite into a nitrite mixed solution, and controlling the stoichiometric proportion of the magnesium nitrite to be 10% to 15%;

[0023] Step 103: titrate with alkali solution to control the pH value of the deionized water to be kept at about 11;

[0024] Step 104: drop the pre...

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Abstract

The invention discloses an anode material for a battery and a preparation method thereof. The anode material for the battery comprises a cobalt-nickel-magnesium-manganese-lithium anode material prepared from cobalt nitrite, nickel nitrite, magnesium nitrite, lithium carbonate and a manganese nitrite solution, wherein the content of magnesium is 4-6 percent. In the cobalt-nickel-magnesium-manganese-lithium anode material prepared with the preparation method, the magnesium content is kept at 4-6 percent, so that the diffraction intensity of the anode material in a CRD representation diagram is reduced, and the peak offset is also small. Meanwhile, impurity phase peaks disappear. Through doping of magnesium ions, the synthesis of a single-phase material is promoted. When the magnesium doping amount is 4-6 percent, the structural orderliness is best; the phase change in a lithium ion intercalation / deintercalation process is fully suppressed; and the charging / discharging performance and cycle performance are improved. The invention also discloses a preparation method of the anode material for the battery.

Description

technical field [0001] The invention relates to a battery device, in particular to a positive electrode material for the battery. Background technique [0002] Magnesium secondary battery is a new type of rechargeable battery developed based on the theory of lithium-ion batteries. Magnesium is a group II metal in the diagonal position to lithium in the periodic table of elements, and thus has similar physical and chemical properties to lithium. The price of magnesium is cheap (about 1 / 24 of that of lithium), environmentally friendly, high melting point (649 degrees), easy to process, poor in activity compared to lithium, and higher in safety. Therefore, it is a good choice to use magnesium compounds as magnesium batteries. A chemical power source with good application prospects. In 2000, the Mg|0.25mol / LMg(AlCl 2 BuEt) 2 / THF\Mg x Mo 3 S 4 system, greatly promoting the development of rechargeable magnesium batteries. Rechargeable magnesium batteries have potential ad...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/525H01M4/505
CPCH01M4/1391H01M4/505H01M4/525H01M10/054Y02E60/10
Inventor 王建平王悦沣韩雪莲燕宏伟
Owner 燕宏伟