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Method for manufacturing MoO3-Li secondary battery

A battery and secondary ion technology, applied in electrolyte battery manufacturing, electrode manufacturing, battery electrodes, etc., can solve problems such as difficulty in becoming commercial Mo-Li ion batteries, battery performance degradation, and inability to provide lithium sources.

Pending Publication Date: 2021-05-18
HUAIYIN TEACHERS COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But since MoO 3 Lithium source cannot be provided. At present, metal lithium and its half-battery are commonly used in the literature, and the performance of the battery is greatly reduced. It is difficult to become a commercial Mo-Li ion battery.

Method used

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  • Method for manufacturing MoO3-Li secondary battery

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Embodiment Construction

[0019] 1. Molybdenum oxide battery: 2032 stainless steel button battery shell is used, 0.2g of commercially available molybdenum oxide is used as the positive electrode material, and commercially available natural graphite is used as the negative electrode material. The electroactive material: PVDF adhesive: carbon black is 80:10:20 Preparation, 1M lithium hexafluorophosphate is the electrolyte (solvent is 1:1:1 methyl carbonate, ethylene carbonate, dimethyl carbonate), aluminum foil is the positive electrode current collector, copper foil is the negative electrode current collector, and the 2400 celgard diaphragm is the battery diaphragm. A lithium foil with a thickness of 0.2 mm, a hole diameter of 1.2 mm, and a hole distance of 1.2 mm is inserted between the battery separator and the negative electrode to assemble the battery. After the battery is sealed, at 0.1-1mA / cm 2 The current is discharged to 0 volts, and then charged to 4V with a current of 0.1-1mA; after the second...

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Abstract

The invention discloses a method for manufacturing a MoO3-Li secondary battery, which comprises the following steps of: placing a lithium material such as a porous metal lithium foil or a lithium strip or a lithium wire between a negative electrode material of a lithium ion battery and a battery diaphragm to serve as an auxiliary electrode of the battery, discharging to 0 volt (relative to the negative electrode) at low current, oxidizing lithium into ions, charging the ions into MoO3 crystals, and then charging the MoO3 crystals into a lithium ion battery; enabling MOO3 to react with Li to generate MO atoms and lithium oxide, embedding and reducing lithium ions into the negative electrode through low-current charging, then increasing the discharge voltage to about 1-2 V (the size is determined according to the property of the positive electrode material), oxidizing the positive electrode metal atoms Mo into ions, and remodeling the crystal structure of the metal oxide; and repairing the positive electrode material crystal of the battery for multiple times in a set charge-discharge voltage range of 4-2V, so that the battery enters a stable working state.

Description

technical field [0001] The invention belongs to the field of energy. Background technique [0002] According to Faraday's law of electrolysis, MoO 3 As a positive electrode material for lithium-ion batteries, its specific capacitance is determined by decide when Mo 6+ reduced to metal atoms, from which MoO was calculated 3 The theoretical capacity is 1117mAh / g; MoO 3 It has the advantages of stable crystal structure, high discharge voltage, long service life, environmental friendliness, and low cost of raw materials. It is a preferred substitute for the new generation of lithium batteries. But since MoO 3 Lithium source cannot be provided. At present, metal lithium is commonly used in the literature to form a half-battery, and the performance of the battery is greatly reduced, making it difficult to become a commercial Mo-Li ion battery. [0003] The invention provides a method for assembling a Mo-Li ion full battery. The principle is to place an appropriate amount of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/04H01M4/38H01M4/48H01M4/583H01M4/62H01M10/0563H01M10/058
CPCH01M4/483H01M4/583H01M4/382H01M4/621H01M4/624H01M4/0404H01M10/0563H01M10/058Y02P70/50Y02E60/10
Inventor 宋远志
Owner HUAIYIN TEACHERS COLLEGE
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