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Process for preparing cobalt selenide composite carbon paper

A technology of cobalt selenide and composite carbon, applied in special paper, paper, papermaking and other directions, can solve the problems of being unsuitable for large-area electrodes and large-scale production, and achieve the effects of avoiding catalyst loss, reducing degradation, and being easy to degrade.

Inactive Publication Date: 2016-10-12
QINGDAO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These processes are not suitable for making large-area electrodes and large-scale production

Method used

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  • Process for preparing cobalt selenide composite carbon paper
  • Process for preparing cobalt selenide composite carbon paper
  • Process for preparing cobalt selenide composite carbon paper

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Add 0.5 mmol of sodium selenite to 28 mL of cellulose aqueous dispersion with a solid content of 1% to dissolve to obtain a solution A. 0.5 mmol of cobalt acetate was added into 56 mL of diethylenetriamine and dissolved to obtain B solution. Add solution B dropwise into solution A, mix and dissolve, and stir for 30 minutes. The mixture was transferred to a 100mL hydrothermal reaction kettle and sealed. The reaction kettle was placed in an oven, and the temperature was raised to 180° C. at a constant temperature of 16 hours at a heating rate of 3° C. / min, and then cooled down to room temperature naturally.

[0030] The mixed pulp obtained by diluting the reaction mixture with deionized water twice, adopts the method of wet papermaking, and uses a filter screen to directly make paper sheets with a size of 5cm×5cm, and then dry or hot press. Put the copied paper (cut and folded into any shape) into an inert atmosphere furnace, and under the protection of an inert gas (ar...

Embodiment 2

[0033] Add 0.5 mmol of sodium selenite to 28 mL of cellulose aqueous dispersion with a solid content of 1% to dissolve to obtain a solution A. 0.475mmol of cobalt acetate and 0.025mmol of manganese acetate were added into 56mL of diethylenetriamine and dissolved to obtain solution B. Add solution B dropwise into solution A, mix and dissolve, and stir for 30 minutes. The mixture was transferred to a 100mL hydrothermal reaction kettle and sealed. The reaction kettle was placed in an oven, and the temperature was raised to 180° C. at a constant temperature of 16 hours at a heating rate of 3° C. / min, and then cooled down to room temperature naturally.

[0034] The mixed pulp obtained by diluting the reaction mixture with deionized water twice, adopts the method of wet papermaking, and uses a filter screen to directly make paper sheets with a size of 5cm×5cm, and then dry or hot press. Put the copied paper (or folded into any shape) into an inert atmosphere furnace, and under the...

Embodiment 3

[0037] Add 0.2 mmol of sodium selenite to 28 mL of cellulose aqueous dispersion with a solid content of 2% to dissolve to obtain a solution A. 0.2mmol of cobalt acetate was added into 56mL of diethylenetriamine and dissolved to obtain B solution. Add solution B dropwise into solution A, mix and dissolve, and stir for 30 minutes. The mixture was transferred to a 100mL hydrothermal reaction kettle and sealed. The reaction kettle was placed in an oven, and the temperature was raised to 180° C. at a constant temperature of 16 hours at a heating rate of 3° C. / min, and then cooled down to room temperature naturally.

[0038] The mixed pulp obtained by diluting the reaction mixture twice with deionized water is wet papermaking, and is directly made into 8cm×8cm paper sheets with a filter screen, and dried or hot pressed. Put the copied paper (or folded into any shape) into an inert atmosphere furnace, and under the protection of an inert gas (argon or nitrogen, etc.), raise the tem...

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Abstract

The invention provides a process for preparing cobalt selenide composite carbon paper. The process includes the steps that firstly, a hydrothermal method is adopted to prepare cellulosic fibers wrapped with a cobalt selenide slice layer; then, a wet method papermaking method is adopted to make cobalt selenide cellulose composite paper, and after the cobalt selenide cellulose composite paper is clipped or folded into any shape, the cobalt selenide composite carbon paper is finally prepared under protection of inert gases through a high-temperature carbonization process. The cobalt selenide composite carbon paper is used for electrodes of electrolysed water and meanwhile has high catalytic oxygen evolution and hydrogen evolution activity.

Description

technical field [0001] The invention belongs to the field of electrochemical catalysts; in particular, it relates to the use of a hydrothermal method to modify a nano-catalyst with a special structure on the surface of cellulose fibers, and then adopts a papermaking process to make the modified cellulose fibers into paper, and then undergoes carbonization under the protection of an inert gas for final preparation. Large-area nano-carbon composite film electrodes. The electrode is suitable for various catalytic electrodes in the field of electrocatalysis; such as the use of electrodes for catalyzing oxygen absorption, oxygen reduction, and hydrogen evolution. Background technique [0002] With the advent of the energy crisis, new energy electrochemical devices have become a major research topic in the world today (such as: electrolyzed water, fuel cells, solar cells, etc.). The most important material in these electrochemical devices is the electrode material, and the prepar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H27/00D21H11/20H01M4/90
CPCD21H11/20D21H27/00H01M4/90Y02E60/50
Inventor 张中一张慧王士财孙德帅杜辉
Owner QINGDAO UNIV
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