Preparation method of iron-cobalt-nickel oxide/carbon cloth composite flexible electrode

An oxide and carbon cloth technology is applied in the field of preparation of iron cobalt nickel oxide/carbon cloth composite flexible electrodes, which can solve the problems of increasing electrode preparation cost, complicated preparation process, and inability to carry out large-scale production.

Inactive Publication Date: 2019-01-18
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be noticed that the above patents use hydrothermal synthesis and in-situ electrodeposition to load single or double transition metal oxides on ca

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Example 1: First carbonize the cotton cloth in a high-temperature tube furnace at 800°C for 1 hour, mix and acidify the carbon cloth with mixed acid (concentrated nitric acid and concentrated sulfuric acid in a volume ratio of 1:3) for 2 hours, wash and dry the treated carbon cloth Put the cloth into the ethanol solution (solution concentration: 0.025mol / L) of ferric chloride hexahydrate, cobalt chloride hexahydrate, and nickel chloride hexahydrate (the molar ratio of substances is 4:3:3), and soak for 30min Finally, the amount of substance added to the solution is 0.003mol ammonium bicarbonate, and it is stirred continuously for 8 hours. After the reaction is completed, it is washed, dried, and treated in a tube furnace at 350°C for 2 hours. The obtained iron-cobalt-nickel oxide / carbon cloth composite The electrochemical performance of the flexible electrode material was tested, using 2mol / L potassium hydroxide as the electrolyte, and the measured specific capacity was ...

Embodiment 2

[0014] Embodiment 2: change the molar ratio of ferric chloride hexahydrate, cobalt chloride hexahydrate, nickel chloride hexahydrate to 2:4:4, the solution concentration is 0.0025mol / L, add the amount of substance in the solution Be 0.003mol ammonium bicarbonate, other conditions are the same as embodiment 1, the specific capacity of the obtained iron cobalt nickel oxide / carbon cloth composite flexible electrode material is 1245mF cm -2 , The capacity retention rate after 1000 cycles is about 90.2%.

Embodiment 3

[0015] Embodiment 3: change the molar ratio of iron trichloride hexahydrate, cobalt chloride hexahydrate, and nickel chloride hexahydrate to be 3: 3.5: 3.5, the solution concentration is 0.0025mol / L, add the amount of substance in the solution Be 0.003mol ammonium bicarbonate, other conditions are the same as embodiment 1, the specific capacity of the obtained iron cobalt nickel oxide / carbon cloth composite flexible electrode material is 1248mF cm -2 , The capacity retention rate after 1000 cycles is about 90.3%.

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PUM

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Abstract

This patent uses cotton cloth as raw material, carbonizes it into carbon cloth, and obtains flexible supercapacitor electrode base material with high specific surface area, oxyge functional groups andgood mechanical properties then through mixed acidification treatment. The obtained treated carbon is added into ferric trichloride hexahydrate, Cobalt chloride hexahydrate, nickel chloride hexahydrate and ethanol solution after a period of time, ammonium bicarbonate is added and continuously stirred, after that reaction is completed, the mixture is washed with deionize water several times, dried, calcined in a high-temperature tubular furnace for a period of time, and taken out after the mixture is cooled to room temperature, so as to prepare an iron cobalt nickel oxide/carbon cloth composite flexible electrode material. By adjusting the reaction time and the amount of iron, cobalt and nickel sources to control the loading amount and morphology of multicomponent transition metal oxides,the flexible supercapacitor electrode materials with good flexibility and excellent electrochemical performance were prepared.

Description

technical field [0001] The invention relates to a preparation method of an iron-cobalt-nickel oxide / carbon cloth composite flexible electrode, in particular to a method of carbonizing cotton cloth to prepare carbon cloth, then acidifying it with concentrated sulfuric acid and concentrated nitric acid, and then reacting with trichlorohexahydrate A new method for preparing iron-cobalt-nickel oxide / carbon cloth composite flexible electrodes through chemical reaction and heat treatment in the ethanol solution of iron oxide, cobalt chloride hexahydrate, and nickel chloride hexahydrate. Background technique [0002] Supercapacitor is a new type of energy storage device between ordinary batteries and capacitors, which can provide higher power density than ordinary batteries and greater energy density than ordinary capacitors, as well as its excellent cycle stability and long-term It has become an energy storage device that has been widely concerned by scientific researchers due to ...

Claims

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Application Information

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IPC IPC(8): H01G11/32H01G11/46H01G11/86
CPCH01G11/32H01G11/46H01G11/86Y02E60/13
Inventor 王丽丽杨坤龙唐家俊卢艺丹
Owner TIANJIN POLYTECHNIC UNIV
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