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Preparation method for preparing Co3O4@CoP composite electrode based on MOF template

A composite electrode and electrode technology, which is applied in the direction of battery electrodes, circuits, electrical components, etc., can solve the problems of adverse effects, poor electrochemical stability of electrode materials, poor interface binding force, etc., and achieve easy implementation, good electrocatalytic activity, composite The effect of novel materials

Inactive Publication Date: 2016-09-28
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this type of material is usually modified on the electrode surface in the form of powder, and its poor interfacial bonding force makes the electrochemical stability of the final electrode material poor, which has an adverse effect on its practical application.

Method used

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  • Preparation method for preparing Co3O4@CoP composite electrode based on MOF template
  • Preparation method for preparing Co3O4@CoP composite electrode based on MOF template
  • Preparation method for preparing Co3O4@CoP composite electrode based on MOF template

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Experimental program
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Effect test

Embodiment 1

[0020] Step 1: Stir and dissolve 5mmol cobalt nitrate hexahydrate and 25mmol urea in 50ml deionized water, pour the obtained homogeneous solution into the reaction kettle, and immerse the cleaned nickel sheet (length, width and height=2cm×1cm×0.1cm) The above solution was subjected to a hydrothermal reaction at a constant temperature of 8 hours at 100°C, and the Co(CO 3 ) 0.5 OH·0.11H 2 O electrode.

[0021] The second step: 10ml of water was stirred to dissolve 1.25g of 2-methylimidazole, and 1.0ml of triethylamine was added, poured into the reaction kettle and the Co(CO 3 ) 0.5 OH·0.11H 2 The O electrode was immersed and kept at 70°C for 2 hours to prepare Co(CO 3 ) 0.5 OH·0.11H 2 O@ZIF-67 composite electrode.

[0022] In the third step, Co(CO 3 ) 0.5 OH·0.11H 2 O@ZIF-67 composite electrode (length, width, thickness = 2cm×1cm×0.1cm) and 0.1g of sodium hypophosphite were placed in a tube furnace porcelain boat for phosphating treatment. The reaction atmosphere is ...

Embodiment 2

[0024] Step 1: Stir and dissolve 5mmol cobalt nitrate hexahydrate and 25mmol urea in 50ml deionized water, pour the obtained homogeneous solution into the reaction kettle, and immerse the cleaned nickel sheet (length, width and height=2cm×1cm×0.1cm) The above solution was subjected to a hydrothermal reaction at a constant temperature of 12 hours at 90°C, and the Co(CO 3 ) 0.5 OH·0.11H 2 O electrode.

[0025] The second step: 10ml of water was stirred to dissolve 1.25g of 2-methylimidazole, and 1.5ml of triethylamine was added, poured into the reaction kettle and the Co(CO 3 ) 0.5 OH·0.11H 2 The O electrode was immersed and kept at 70°C for 2 hours to prepare Co(CO 3 ) 0.5 OH·0.11H 2O@ZIF-67 composite electrode.

[0026] In the third step, Co(CO 3 ) 0.5 OH·0.11H 2 O@ZIF-67 composite electrode (length, width and height = 2cm×1cm×0.1cm) and 0.5g sodium hypophosphite were placed in a tube furnace porcelain boat for phosphating treatment. The reaction atmosphere is Ar a...

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Abstract

The invention provides a preparation method for preparing a Co3O4@CoP composite electrode based on an MOF template and belongs to the technical field of energy conversion. The preparation method comprises the following steps: uniformly growing Co(CO3)0.5OH 0.11H2O on a nickel plate substrate by virtue of simple hydrothermal reaction, and further growing favorable-appearance ZIF-67 in situ on the surface of Co(CO3)0.5OH 0.11H2O, thereby obtaining a Co(CO3)0.5OH 0.11H2O@ZIF-67 composite material; and furthermore, performing bonderizing so as to obtain Co3O4@CoP derivates. Compared with a single Co(CO3)0.5OH 0.11H2O electrode, the derivate electrode material has relatively low oxygen evolution potential and relatively high corresponding current density under same electric potential, and can be applied to the fields of hydrogen production based on electrocatalysis and decomposition of water and conversion of new energy resources such as fuel cells.

Description

technical field [0001] The invention belongs to the technical field of electrochemical energy storage and conversion, and the technology relates to the preparation method of metal oxide and zeolite imidazolate framework material (ZIFs) composite material and its derivatives, especially the cobalt-based oxide based on the surface of the nickel sheet substrate Nanoarray modified growth ZIF and its constructed Co 3 o 4 Construction of @ZIF derivative electrodes. Background technique [0002] With the excessive exploitation and continuous consumption of fossil energy (coal, oil, natural gas), the energy crisis and the ensuing environmental pollution have attracted people's attention, especially in recent years, the increasing smog environmental problems It was a wake-up call for mankind. Therefore, the development of new energy storage alternatives to fossil energy and the required electrode materials have become one of the hotspots of extensive research. Hydrogen energy is ...

Claims

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Application Information

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IPC IPC(8): H01M4/36H01M4/52H01M4/58H01M4/1391H01M4/1397
CPCH01M4/1391H01M4/1397H01M4/362H01M4/52H01M4/5805Y02E60/10
Inventor 李建荣周健豆义波赵敏坚谢亚勃
Owner BEIJING UNIV OF TECH
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