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Application of cobalt oxide particles loaded three-dimensional, macroporous structured molybdenum dioxide material as anode electrocatalyst

A three-dimensional macroporous, molybdenum dioxide technology, applied in the direction of metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, electrodes, etc., can solve problems such as plastic deformation and performance degradation, and achieve increased current density Large, catalytic performance improvement, short time-consuming effect

Inactive Publication Date: 2017-01-25
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the irreversible volume expansion can lead to plastic deformation and performance degradation, it is necessary to further study its structure

Method used

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  • Application of cobalt oxide particles loaded three-dimensional, macroporous structured molybdenum dioxide material as anode electrocatalyst
  • Application of cobalt oxide particles loaded three-dimensional, macroporous structured molybdenum dioxide material as anode electrocatalyst
  • Application of cobalt oxide particles loaded three-dimensional, macroporous structured molybdenum dioxide material as anode electrocatalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Take 2g of the template and put it into 10ml of 0.05M MoCl 5 Put the beaker into a 50°C incubator, seal the beaker to prevent the volatilization of water, and oxidize the solution in about two days, filter it several times and dry it to obtain a blue solid. Put this solid in a crucible and put it into a heating furnace that can pass through a protective atmosphere, heat treatment for 2 hours from 20°C to 650°C under the protection of flowing argon atmosphere, and the heating rate is 5°C / min, and then cool with the furnace to obtain Three-dimensional macroporous MoO with a pore size of 200 nm 2 .

[0022] Obtained MoO 2 20 mg into 4ml 5M Co(NO 3 ) 2 The solution of water and ethylene glycol, in which the ratio of solvent water to ethylene glycol is 1:1, sealed and placed in a 50°C incubator, left for 12 hours and then suction filtered to obtain a black solid, dried and heated in vacuum at 350°C for 2 hours, then Three-dimensional macroporous structure MoO with pore...

Embodiment 2

[0024] Take 2g of the template and put it into 10ml of 0.05M MoCl 5 Put the beaker into a 50°C incubator, seal the beaker to prevent the volatilization of water, and oxidize the solution in about two days, filter it several times and dry it to obtain a blue solid. Put this solid in a crucible and put it into a heating furnace that can pass through a protective atmosphere, and heat it from 25°C to 640°C for 1.5 hours under the protection of a flowing argon atmosphere, and the heating rate is about 8°C / min. After cooling in the furnace, a three-dimensional macroporous MoO with a pore size of 350 nm was obtained. 2 .

[0025] Obtained MoO 2 20 mg into 4ml 5M Co(NO 3 ) 2 The solution of water and ethylene glycol, wherein the ratio of solvent water to ethylene glycol is 1:1, sealed and placed in a 50°C incubator, left for 13 hours and then suction filtered to obtain a black solid, dried and heated at 400°C for 2 hours in a vacuum, then Three-dimensional macroporous structure Mo...

Embodiment 3

[0027] Take 2g of the template and put it into 10ml of 0.05M MoCl 5 Put the beaker into a 50°C incubator, seal the beaker to prevent the volatilization of water, and oxidize the solution in about two days, filter it several times and dry it to obtain a blue solid. Put this solid in a crucible and put it into a heating furnace that can pass through a protective atmosphere, and heat it from 22°C to 645°C for 2 hours under the protection of a flowing argon atmosphere, and the heating rate is about 8°C / min. After cooling in the furnace, a three-dimensional macroporous MoO with a pore size of 400 nm was obtained. 2 .

[0028] Gained MoO2 20 mg put into 4ml5M Co(NO 3 ) 2 The solution of water and ethylene glycol, in which the ratio of solvent water to ethylene glycol is 1:1, is sealed and placed in a 50°C incubator, and after 12 hours of suction filtration, a black solid is obtained. After drying, it is heated in vacuum at 380°C for 2 hours, and then Three-dimensional macroporou...

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Abstract

The invention discloses application of cobalt oxide particles loaded three-dimensional, macroporous structured molybdenum dioxide material as an anode electrocatalyst. The mass ratio of molybdenum dioxide to cobalt oxide is 9:(0.4-2), the bore diameter of the molybdenum dioxide is 200-400nm, and the bore diameters of the cobalt oxide particles are 5-10nm. The three-dimensional, macroporous molybdenum dioxide structure is prepared by using an orderly arranged polymethyl methacrylate microspheric collocryst template, and the cobalt oxide particles are loaded on the three-dimensional macroporous molybdenum dioxide structure. The application of cobalt oxide particulate material loaded three-dimensional, macroporous structured molybdenum dioxide as the anode electrocatalyst has low implementation costs, simple operation and low pollution, and is an efficient and economical synthetic method, and the material has a stable structure and anode electrocatalysis performance.

Description

[0001] The application of the present invention is a divisional application of the parent application "a three-dimensional macroporous structure molybdenum dioxide-supported cobalt oxide granular material and its synthesis method". The application number of the parent application is 2015101633222, and the application date is April 8, 2015 . technical field [0002] The invention relates to a novel nanometer material and a synthesis method thereof, in particular to a three-dimensional macroporous structure molybdenum dioxide-loaded cobalt oxide particle material and a synthesis method thereof. Background technique [0003] transition metal oxide MoO 2 Belonging to the monoclinic system with a distorted rutile crystal structure, MoO 2 It is a transition metal oxide with high conductivity, high melting point, and high chemical stability. Its high-efficiency charge transport properties make it widely used in catalysts, sensors, electrochromic displays, recording materials, elec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B11/03C25B11/06
CPCB01J23/002B01J23/882B01J35/1019C25B11/031C25B11/091
Inventor 梁砚琴李彬彬崔振铎杨贤金朱胜利李朝阳
Owner TIANJIN UNIV
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