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Anode material of lithium ion battery in use for safety type miner's lamp, and preparation method

A technology for lithium ion batteries and positive electrode materials, applied in the field of lithium ion battery positive electrode materials and their preparation, can solve the problems of acid corrosion, high production cost of lead-acid batteries, difficult maintenance, etc., and achieve good high temperature stability performance and good cycle stability performance. , the effect of good structural stability

Inactive Publication Date: 2006-04-19
SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, miner's lamps mainly use lead-acid batteries as power sources. Lead-acid batteries have high production costs, short average life-less than 400 cycles, difficult maintenance, heavy weight-2kg, and large volume-12.5cm×3.4cm×19.5 cm, inconvenient to carry and other disadvantages, it is also easy to leak and cause acid corrosion, serious environmental pollution, which brings a lot of difficulties to the normal work and life of miners
However, the current commercial lithium-ion battery cathode materials mainly use lithium cobalt oxide and lithium nickel oxide. These materials are expensive. During the long-term cycle, the oxygen released by the electrode reaction may interact with the electrolyte to cause safety problems.

Method used

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  • Anode material of lithium ion battery in use for safety type miner's lamp, and preparation method
  • Anode material of lithium ion battery in use for safety type miner's lamp, and preparation method
  • Anode material of lithium ion battery in use for safety type miner's lamp, and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Chemically pure FeC 2 o 4 ·H 2 O, NH 4 h 2 PO 4 , LiOH·H 2 O is used as a raw material, and the ratio of atomic ratio Li:Fe:P is 1:1:1. Mix evenly in a ball mill tank with ethanol as a solvent. The ball mill mixing time is 5 hours, and then ultrasonically dispersed for 30 minutes. The homogeneously mixed slurry was dried in air for 3 hours until the ethanol volatilized completely. The dried material is put into a program-controlled horizontal furnace and treated by a two-stage high-temperature solid-phase method, and inert gas protection is always used during the treatment process. Using temperature programming, first raise the temperature to 300°C at a uniform speed, the heating rate is 5°C / min, then react at constant temperature for 6 hours, take out the sample and grind it for 2 hours, then place it in a horizontal furnace and heat it up to 750°C, roast for 24 hours, after the reaction is over , the sample is naturally cooled to room temperature, and the posit...

Embodiment 2

[0031] Chemically pure FeC 2 o 4 ·H 2 O, (NH 4 ) 2 HPO 4 , Li 2 CO 3 As raw material, by atomic ratio Li:Fe:P is the ratio of 1:1:1 to carry out batching, all the other steps are the same as embodiment 1. Prepared LiFePO 4 Material properties are comparable to Example 1.

Embodiment 3

[0033] Chemically pure ferrous acetate, NH 4 h 2 PO 4 , LiOH·H 2 O is the raw material, and the ratio of atomic ratio Li:Fe:P is 1:1:1. The heating temperatures of the two stages are 380° C. and 780° C. respectively, and the rest of the steps are the same as in Example 1. Preparation of LiFePO 4 The properties of the powder material are close to that of Example 1.

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Abstract

Characters of the invention are that LiFePO4 prepared through method of high temperature solid phase is olivine type structured active material of battery; the anode material of lithium ion battery in use for miner's lamp gives full play to features of simple preparing technique, low cost, high safety performance and environment friendly. With LiFePO4 being as anode material and packed by aluminum-plastic, lithium ion battery for miner's lamp can pass each security testing. The material possesses foreground applicable to anode material of lithium ion battery in use for miner's lamp.

Description

technical field [0001] The invention relates to a lithium ion battery cathode material for a safe miner's lamp and a preparation method thereof, belonging to the field of lithium ion batteries for a miner's lamp. Background technique [0002] Miner's lamp is an essential underground lighting tool for coal miners, and its safety and quality are closely related to coal mine safety production. At present, miner's lamps mainly use lead-acid batteries as power sources. Lead-acid batteries have high production costs, short average life-less than 400 cycles, difficult maintenance, heavy weight-2kg, and large volume-12.5cm×3.4cm×19.5 cm, inconvenient to carry and other disadvantages, it is also easy to leak and cause acid corrosion, serious environmental pollution, which brings a lot of difficulties to the normal work and life of miners. In order to solve the problems existing in the use of lead-acid batteries as a miner's lamp power supply, someone proposes to use lithium-ion batt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/48H01M4/58H01M4/04C01D15/00C01B25/00C01G49/00H01M10/40
CPCY02E60/122H01M4/5825H01M10/0525Y02E60/10
Inventor 赖春艳解晶莹刘辉
Owner SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI
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