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Polyhedron bimetallic oxide as well as preparation method and application thereof

A bimetallic oxide, polyhedron technology, applied in chemical instruments and methods, oxygen/ozone/oxide/hydroxide, non-metallic elements, etc., can solve the problems of excessive crystallinity, high price, small specific surface area, etc. , to achieve the effect of mild conditions, controllable operation and simple process

Inactive Publication Date: 2018-02-27
CHINA UNIV OF MINING & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In view of its excellent properties, researchers have prepared a variety of RuO 2 materials used in the research of supercapacitors, but unfortunately the more practical RuO 2 Bulk materials cannot be used to make electrode materials for supercapacitors due to their small specific surface area and excessive crystallinity.
Although RuO 2 The Faraday pseudocapacitor prepared as an electrode material has a high specific capacitance, but its price is too high, it pollutes the environment, and it can only work in a strong acid electrolyte, making it impossible to put it into industrial use
In order to reduce the RuO 2 The production cost of the electrode material will be RuO 2 Depositing composite materials on low-cost materials, although this method reduces the cost to a certain extent, it still cannot meet the needs of industrialization

Method used

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  • Polyhedron bimetallic oxide as well as preparation method and application thereof
  • Polyhedron bimetallic oxide as well as preparation method and application thereof
  • Polyhedron bimetallic oxide as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 1. Synthesis of Fe-containing zif-67

[0027] Weigh 0.4774g Co(NO 3 ) 2 ·6H 2 O and 0.331g Fe(NO 3 ) 2 ·6H 2 O was dissolved in 50ml deionized water to form solution A; 1.622g 2-methylimidazole and 3ml triethylamine were dissolved in 50ml deionized water to form solution B; solution A and solution B were stirred evenly and mixed respectively; wherein, Co (NO 3 ) 2 ·6H 2 O+Fe(NO 3 ) 2 ·6H 2 The molar ratio of O, 2-methylimidazole and triethylamine was 1:8:8; the mixed solution was stirred evenly at room temperature and allowed to stand for 24 hours, and then centrifuged. Centrifuge and wash with deionized water for 2-3 times, and dry in an oven at a temperature of 70-100°C for 12-24 hours to obtain iron-containing zif-67 powder;

[0028] 2. Preparation of polyhedral double metal oxide materials

[0029] The obtained iron-containing zif-67 powder was oxidized in a tube furnace at 350° C. for 3 hours, and oxidized in air to obtain a polyhedral double metal oxi...

Embodiment 2

[0034] 1. Synthesis of nickel-containing zif-67

[0035] Weigh 0.4774g Co(NO 3 ) 2 ·6H 2 O and 0.238g Ni(NO 3 ) 2 ·6H 2O was dissolved in 50ml deionized water to form solution A; 1.622g 2-methylimidazole and 3ml triethylamine were dissolved in 50ml deionized water to form solution B; solution A and solution B were stirred evenly and mixed respectively; wherein, Co (NO 3 ) 2 ·6H 2 O+Ni(NO 3 ) 2 ·6H 2 The molar ratio of O, 2-methylimidazole and triethylamine was 1:8:8; the mixed solution was stirred evenly at room temperature and allowed to stand for 24 hours, and then centrifuged. Centrifuge and wash with deionized water for 2-3 times, and dry in an oven at a temperature of 70-100°C for 12-24 hours to obtain iron-containing zif-67 powder;

[0036] 2. Preparation of polyhedral double metal oxide materials

[0037] The obtained Ni-containing zif-67 powder was oxidized in a tube furnace at 350° C. for 3 hours, and then oxidized in air to obtain a polyhedral double met...

Embodiment 3

[0041] 1. Synthesis of iron-containing zif-8

[0042] Weigh 0.488g Zn(NO 3 ) 2 ·6H 2 O and 0.331g Fe(NO 3 ) 2 ·6H 2 O was dissolved in 50ml of deionized water to form solution A; 1.622g of 2-methylimidazole and 3ml of triethylamine were dissolved in 50ml of deionized water to form solution B; solution A and solution B were stirred evenly and then mixed; wherein, Zn (NO 3 ) 2 ·6H 2 O+Fe(NO 3 ) 2 ·6H 2 The molar ratio of O, 2-methylimidazole and triethylamine was 1:8:8; the mixed solution was stirred evenly at room temperature and allowed to stand for 24 hours, and then centrifuged. Centrifugal washing with deionized water for 2-3 times, drying in an oven at a temperature of 70-100° C. for 12-24 hours to obtain iron-containing zif-8 powder.

[0043] 2. Preparation of polyhedral double metal oxide materials

[0044] The obtained Fe-containing zif-8 powder was oxidized in a tube furnace at 350° C. for 3 hours, and then oxidized in air to obtain a polyhedral double met...

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Abstract

The invention discloses a polyhedron bimetallic oxide as well as a preparation method and application thereof. The polyhedron bimetallic oxide is prepared by the following steps: with a zeolite imidazate skeleton structure material serving as a raw material, partially replacing metals in the zeolite imidazate skeleton structure material with a metal; heating for oxidation to obtain the polyhedronbimetallic oxide. Finally, mixed liquid is prepared by adopting the polyhedron bimetallic oxide as an active substance, carbon black as a conductive agent and polytetrafluoroethylene as an adhesive and adding a solvent N,N-dimethylpyrrolidone; the obtained mixed liquid is dropwise added to a nickel piece which is then dried to obtain a polyhedron bimetallic oxide electrode. The preparation methoddisclosed by the invention has the advantages of mild conditions, simple technology and controllable operation; when densities of the charge current and discharge current of the prepared polyhedron bimetallic oxide electrode are 1A / g in 1mol / L NaOH electrolyte respectively, the specific capacitance reaches 510F / g respectively; after 3,000 times of charging and discharging, the specific capacitanceis attenuated by 25%.

Description

technical field [0001] The invention relates to the field of chemical material preparation, in particular to a polyhedral double metal oxide and a preparation method thereof. Background technique [0002] From primitive society to modern society, the progress of human civilization, science and technology, etc. has been without the support of many materials. Each period has the most important material foundation. Now it is considered as the main basic material and technology that dominates the future development direction of human beings. Energy, materials , information and biotechnology, and among the four, energy is considered to be the most basic material basis. Energy is an irreplaceable substance in people's life. Energy is consumed directly or indirectly from production to daily life. Therefore, it can be said that only sufficient energy can promote the development and progress of human society and civilization. The basic role of energy makes its impact on the world ec...

Claims

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Application Information

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IPC IPC(8): C01B13/32C01G49/02C01G51/04C01G53/04H01G11/24H01G11/46H01M4/48
CPCC01B13/322C01G49/02C01G51/04C01G53/04C01P2004/03H01G11/24H01G11/46H01M4/483Y02E60/10
Inventor 委福祥刘欣高鹤王志强隋艳伟戚继球
Owner CHINA UNIV OF MINING & TECH
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