A method for preparing an electrode of ZIF-derived CoMoO4

A ZIF-67 electrode technology, which is applied in the field of ZIF electrode preparation, can solve the problems of poor electrode stability and small specific capacitance, and achieve the effects of increasing specific heat capacity, ensuring heating rate, and increasing migration rate

Active Publication Date: 2019-01-18
盐城市盐南高新区都市产业发展有限公司
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Problems solved by technology

[0004] In order to overcome the problems of poor stability and small specific capacitance of metal oxide electrodes in the prior art, the prese

Method used

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  • A method for preparing an electrode of ZIF-derived CoMoO4
  • A method for preparing an electrode of ZIF-derived CoMoO4
  • A method for preparing an electrode of ZIF-derived CoMoO4

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Embodiment 1

[0029] 1. Sample preparation

[0030] A ZIF-derived CoMoO 4 The preparation method of the electrode is to use high-temperature calcined ZIF-67 as a precursor, and prepare CoMoO by hydrothermal method 4 , the steps are: (1) Take Na respectively 2 MoO4·2H 2 O and CoCl 2 ·6H 2 O was dissolved in deionized water and stirred in a magnetic stirrer until dissolved; (2) adding a small amount of ZIF-67 powder with a calcination temperature of 700 °C and ultrasonically stirring until a homogeneous solution; (3) transferring the obtained solution to a reaction kettle, Reacted at 160°C for 2h, then cooled to room temperature; (4) The obtained product was washed alternately with deionized water and absolute ethanol, then placed in a constant temperature drying oven at 60°C for 24h, taken out and ground to obtain the ZIF-67 derived CoO 4 (5) Soak in acetone for 10 minutes, then add ethanol to wash for 10 minutes, and finally add 2mol / L hydrochloric acid for ultrasonic cleaning for 10 ...

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Abstract

The invention provides a method for preparing an electrode of ZIF-derived CoMoO4. the method is characterized in that the method uses a high temperature calcined ZIF-67 as a precursor to prepare CoMoO4 by hydrothermal method., that steps are as follow: (1) molybdate and a compound containing a Co salt are taken and stirred in deionized water until the molybdate and the compound contain the Co saltare dissolved; (2) a small amount of ZIF-67 power are added, stirred to a homogeneou solution; 3, that mixture is transferred to a reaction kettle, and the mixture is cooled to room temperature afterreaction for 2h; (4) alternately cleaning and drying are performed for 24h; (5) Ultrasonic cleaning is performed for 30 min, deionized water cleaning and ultrasonic are performed, drying is performedfor 12 h; 6) that graphite paper is dried at constant temperature, the required material is ground in a mortar, a small amount of solvent is added, uniformly dropping on the dried sheet layer, and then drying is performed, and 7) a regular-shaped electrode of ZIF-derived CoMoO4 is performed. The invention overcomes the problems of poor stability and small specific capacitance of metal oxide electrode in the prior art, and provides a preparation method of CoMoO4 derived from metal oxide electrode material ZIF with high specific capacity and good stability.

Description

technical field [0001] The invention relates to the technical field of material science, in particular to the preparation of ZIF electrodes. Background technique [0002] Electrode materials are an important part of supercapacitors, which largely determine the performance of supercapacitors. Nowadays, research on supercapacitors mainly focuses on electrode materials. Electrode materials can be divided into three categories: carbon-based materials, transition metal oxides, and conductive polymer materials. Carbon-based materials adopt the electric double layer capacitive energy storage mechanism, which are mainly used as electrode materials such as carbon fiber, graphene, carbon cloth, carbon aerogel, carbon nanotubes, and activated carbon. Carbon materials have the characteristics of large specific surface area, high cycle stability, and good conductivity, and are ideal as electrode materials for supercapacitors. Metal oxides and conductive polymers are based on the pseud...

Claims

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Application Information

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IPC IPC(8): H01G11/86H01G11/24H01G11/46
CPCH01G11/24H01G11/46H01G11/86Y02E60/13
Inventor 朱光张莉
Owner 盐城市盐南高新区都市产业发展有限公司
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