Honeycomb electrode material and preparation method thereof

An electrode material and honeycomb technology, which is applied in the field of honeycomb electrode material and its preparation, can solve the problems of high overpotential and poor cycle stability of lithium-oxygen batteries, and can solve the problem of overpotential and poor cycle performance, promote hydrothermal reaction, The effect of excellent electrochemical performance

Inactive Publication Date: 2018-08-03
CHENGDU UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the above technical problems, the present invention discloses a honeycomb electrode material, which can improve the problems of high overpotential and poor cycle stability of lithium-oxygen batteries during charging, and effectively avoid side reactions brought by the electrode, thereby improving the cycle stability and service life of the lithium-oxygen battery

Method used

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  • Honeycomb electrode material and preparation method thereof
  • Honeycomb electrode material and preparation method thereof
  • Honeycomb electrode material and preparation method thereof

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Effect test

Embodiment 1

[0028] A kind of cellular electrode material of the present invention is prepared by the following method:

[0029] 1) Preparation of the first solution: Mix 10ml of nickel chloride hexahydrate with 20ml of ethylene glycol, then mix 5ml of thioacetamide with 15ml of deionized water, and then mix the above two mixed solutions to obtain the first solution;

[0030] 2) adding urea to the first solution to obtain the second solution;

[0031] 3) The second solution is subjected to a hydrothermal reaction at 160° C., and the hydrothermal reaction time is 32 hours;

[0032] 4) After the hydrothermal reaction is completed, rinse with deionized water for 3 times, and then dry in a vacuum drying oven.

Embodiment 2

[0034] A kind of cellular electrode material of the present invention is prepared by the following method:

[0035] 1) Preparation of the first solution: Mix 10ml of nickel chloride hexahydrate with 20ml of ethylene glycol, then mix 5ml of thioacetamide with 15ml of deionized water, and then mix the above two mixed solutions to obtain the first solution;

[0036] 2) adding urea to the first solution to obtain the second solution;

[0037] 3) The second solution is subjected to a hydrothermal reaction at 180° C., and the hydrothermal reaction time is 25 hours;

[0038] 4) After the hydrothermal reaction is completed, rinse with absolute ethanol for 4 times, and then dry in a vacuum drying oven.

Embodiment 3

[0040] A kind of cellular electrode material of the present invention is prepared by the following method:

[0041] 1) Preparation of the first solution: Mix 10ml of nickel chloride hexahydrate with 20ml of ethylene glycol, then mix 5ml of thioacetamide with 15ml of deionized water, and then mix the above two mixed solutions to obtain the first solution;

[0042] 2) adding urea to the first solution to obtain the second solution;

[0043] 3) The second solution is subjected to a hydrothermal reaction at 200° C., and the hydrothermal reaction time is 16 hours;

[0044] 4) After the hydrothermal reaction is completed, rinse with deionized water for 5 times, and then dry in a vacuum drying oven.

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Abstract

The invention discloses a preparation method of a honeycomb electrode material. The preparation method comprises process steps as follows: an alcohol solution of nickel chloride is added to a water solution of thioacetamide, and a first mixed solution is obtained after mixing; the first mixed solution and urea are mixed, and a second mixed solution is obtained; the second mixed solution is subjected to a hydrothermal reaction, and an obtained reaction product is subjected to aftertreatment. The electrode material can relieve the problems of higher overpotential and poor circulation stability in the charging process of a lithium-oxygen battery and effectively avoid side effects caused by conventional carbon materials and an electrode containing an adhesive, so that the circulation stabilityof the lithium-oxygen battery is improved, and the service life of the lithium-oxygen battery is prolonged.

Description

technical field [0001] The invention relates to the field of lithium-oxygen batteries, in particular to a honeycomb electrode material and a preparation method thereof. Background technique [0002] The lithium-oxygen battery is a new type of fuel cell in which metallic lithium is used as the negative electrode and oxygen is used as the positive electrode. Lithium-oxygen batteries have the advantages of high theoretical energy density, abundant sources of positive electrode materials, green and pollution-free, recyclable, and low cost, and are a good energy storage device. Although lithium-oxygen batteries have the above advantages, due to the high charging overpotential and hysteresis oxygen reduction reaction kinetics, the electrochemical performance of lithium-oxygen batteries during charge and discharge is not good, and it also reduces the capacity of lithium-oxygen batteries. cycle life. Contents of the invention [0003] In order to solve the above technical proble...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/58H01M12/08
CPCH01M4/5815H01M4/8605H01M4/88H01M12/08Y02E60/10
Inventor 舒朝著候志前龙剑平陈建中
Owner CHENGDU UNIVERSITY OF TECHNOLOGY
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