Preparation method of iron oxide-mesoporous carbon lithium ion battery anode material

A lithium-ion battery and negative electrode material technology, applied in battery electrodes, secondary batteries, circuits, etc., can solve problems such as easy crushing and agglomeration, poor conductivity and volume change, and achieve good conductivity, stable chemical properties, and reversible electricity. The effect of high capacity

Inactive Publication Date: 2017-11-24
LUDONG UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is that the existing iron oxide, as the negative electrode material of lithium ion battery, has poor conductivity and the defects of large volume change, easy crushing and agglomeration in the process of lithium ion intercalation / extraction

Method used

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  • Preparation method of iron oxide-mesoporous carbon lithium ion battery anode material
  • Preparation method of iron oxide-mesoporous carbon lithium ion battery anode material
  • Preparation method of iron oxide-mesoporous carbon lithium ion battery anode material

Examples

Experimental program
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Effect test

Embodiment 1

[0029] 1) 50 parts of resorcinol, 30 parts of urotropine, 80 parts of polyoxyethylene-polyoxypropylene-polyoxyethylene triblock copolymer Pluronic P-123 (PEO 20 -PPO 70 -PEO 20 ) and 20 parts of 1,3,5-trimethylbenzene were dissolved in 170 parts of deionized water, heated and stirred at 30°C for 2 hours, until they were completely dissolved, and a clear solution A was obtained.

[0030] 2) Add 60 parts of ferrous gluconate into the above-mentioned clear solution A, heat and stir at 30° C. for 1 hour, and wait until it dissolves completely to obtain clear solution B.

[0031] 3) Put the above-mentioned clear solution B in a reaction kettle, then place the reaction kettle in an oven at a temperature of 100° C. for heating and reacting for 12 hours, and wash the obtained intermediate product 3 times with water and alcohol.

[0032] 4) The above intermediate product was carbonized in an argon atmosphere, the carbonization temperature was 800° C., and the carbonization time was 3...

Embodiment 2

[0034] 1) Dissolve 60 parts of resorcinol, 40 parts of urotropine, 100 parts of polystyrene-polyoxyethylene-polystyrene triblock copolymer and 25 parts of 1,3,5-trimethylbenzene in 250 parts of deionized water were heated and stirred at 40° C. for 2 hours until it was completely dissolved to obtain a clear solution A.

[0035] 2) Add 90 parts of ferrous gluconate to the above-mentioned clear solution A, heat and stir at 30° C. for 1 hour, and wait until it dissolves completely to obtain clear solution B.

[0036] 3) Put the above-mentioned clear solution B in a reactor, then place the reactor in an oven with a temperature of 160° C. for a heating reaction for 16 hours, and wash the obtained intermediate product three times with water and alcohol.

[0037] 4) The above intermediate product was carbonized in an argon atmosphere, the carbonization temperature was 900° C., and the carbonization time was 2 hours, to obtain the iron oxide-mesoporous carbon lithium ion battery negati...

Embodiment 3

[0039] 1) 55 parts of resorcinol, 35 parts of urotropine, 100 parts of polyoxyethylene-polyoxypropylene-polyoxyethylene triblock copolymer Pluronic F-127 (PEO 106 -PPO 70 -PEO106 ) and 21 parts of 1,3,5-trimethylbenzene were dissolved in 220 parts of deionized water, heated and stirred at 30°C for 2 hours, until they were completely dissolved, and a clear solution A was obtained.

[0040] 2) Add 80 parts of ferrous gluconate to the above-mentioned clear solution A, heat and stir at 30° C. for 1 hour, and wait until it dissolves completely to obtain clear solution B.

[0041] 3) Put the above-mentioned clear solution B in a reaction kettle, then place the reaction kettle in an oven at a temperature of 100° C. for heating and reacting for 12 hours, and wash the obtained intermediate product 3 times with water and alcohol.

[0042] 4) The above intermediate product was carbonized in an argon atmosphere, the carbonization temperature was 700° C., and the carbonization time was 5 ...

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Abstract

The invention relates to a preparation method of an iron oxide-mesoporous carbon lithium ion battery anode material. Hexagonal stacked micelles are formed by self-assembly of resorcinol and a surfactant, ferrous gluconate is complexed to the micelles under the action of charges and is calcined in an inert gas atmosphere, and the iron oxide-mesoporous carbon lithium ion battery anode material is generated. The stable mesoporous carbon structure of the anode material can not only increase the lithium ion diffusion and electron transfer rate, but also mitigate the structural failure caused by the volume change and agglomeration, thereby significantly improving the reversible capacitance and cycle stability of the anode material.

Description

technical field [0001] The invention relates to a method for preparing an iron oxide-mesoporous carbon lithium ion battery negative electrode material, belonging to the technical field of lithium ion batteries. Background technique [0002] With the increasing global energy shortage and environmental pollution, high-density lithium-ion batteries are widely used in portable power supply equipment, electronic devices and hybrid vehicles due to their advantages such as large capacity, long life, low self-discharge rate and high safety. more and more widely. Among them, the characteristics of electrode materials are one of the key factors that determine the performance of lithium-ion batteries. Compared with commercial graphite electrodes (theoretical capacitance 372mAhg ～1 ) Compared with metal oxides such as iron oxide, its theoretical capacitance (1005mAhg ～1 ) is relatively high, and it also has the advantages of abundant reserves, low price, and no pollution, and has bec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/36H01M4/525H01M4/62H01M10/0525
CPCH01M4/362H01M4/525H01M4/62H01M4/625H01M10/0525Y02E60/10
Inventor 康利莹杨正龙姜玮杨迎霞唐清华张明毅
Owner LUDONG UNIVERSITY
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