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MoO3 and ordered mesoporous carbon composite electrode material and preparation method thereof

A composite electrode and mesoporous carbon technology, which is applied in carbon-silicon compound conductors, cable/conductor manufacturing, circuits, etc., can solve the problems of phase change, collapse of pore structure, and agglomeration of metal oxide particles, and achieves low equipment requirements. The preparation process is simple and the effect of reducing the production cost

Inactive Publication Date: 2010-09-15
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the traditional impregnation method is prone to the problem of agglomeration of metal oxide particles
In addition, high temperature treatment such as chemical vapor injection can easily cause the collapse of the pore structure and the change of the phase.

Method used

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  • MoO3 and ordered mesoporous carbon composite electrode material and preparation method thereof
  • MoO3 and ordered mesoporous carbon composite electrode material and preparation method thereof
  • MoO3 and ordered mesoporous carbon composite electrode material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] MoO 3 Prepare the composite electrode material with ordered mesoporous carbon, the steps are:

[0031] (1) Synthesis of ordered mesoporous carbon CMK-3: 1g of mesoporous silica SBA-15 was added to sulfuric acid-containing sucrose aqueous solution (configured according to 1.25g sucrose, 0.2g sulfuric acid and 5g water), and stirred for 2-4h. The mixture was placed in a drying oven and kept at 50°C for 12h, then the temperature was raised to 160°C for 6h. Add 0.75g of sucrose, 0.1g of sulfuric acid and 5g of water to the above partially polymerized silica sample, stir evenly, and perform the same treatment in a drying oven at 50°C and 160°C respectively. Then, under a nitrogen protective atmosphere, the temperature was raised to 900°C at a rate of 250°C / h for 6 hours to complete the entire carbonization process. The obtained silica / carbon composite product was impregnated with 10 wt% hydrofluoric acid solution to remove the template. The final product is filtered, wash...

Embodiment 2～ Embodiment 4

[0036] Example number

[0037] According to the above experimental parameters with reference to the method of Example 1 to obtain MoO 3 Composite electrode materials with ordered mesoporous carbons.

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Abstract

The invention relates to a MoO3 and ordered mesoporous carbon composite electrode material and a preparation method thereof. In the invention, a double electric layer capacitor provided by ordered mesoporous carbon and a pseudo-capacitor provided the stratiform transition metal oxide MoO3 are utilized together to improve the comprehensive electrochemical properties of the capacitors. The composite material has an ordered mesoscopic structure, and MoO3 nano particles have uniform size and are uniformly dispersed in a host ordered mesoporous carbon material, wherein the size of the MoO3 nano particles is smaller than 4nm, and the mass ratio of the host ordered mesoporous carbon material to a guest ordered mesoporous carbon material is 1:(0.01-0.18). The method comprises the following steps of: carrying out surface fictionalization treatment on the host material; then filling precursor solution MoO3.0.5H2O2.H2O sol into ordered pore canals of the host mesoporous carbon material by using a liquid phase synthesis method; and finally obtaining a MoO3 and ordered mesoporous carbon composite electrode material through filtering, washing and heat treatment. Proved by electrochemical testing, the discharge specific capacitance of the composite electrode material is improved and the stability is good. The invention has simple process, low equipment requirement, and strong maneuverability and can be realized at normal temperature. The invention can be widely applied to electrode materials of electrical devices.

Description

technical field [0001] The present invention relates to a kind of MoO synthesized by vacuum ultrasonic assisted liquid phase method 3 The invention discloses a method for preparing a composite electrode material with ordered mesoporous carbon, belonging to the technical field of high-efficiency energy materials. Background technique [0002] Due to the rapid development of microelectronics technology, electrochemical capacitors, a new type of energy storage element whose power density and energy density are between traditional capacitors and secondary batteries, have been developed rapidly. At present, mesoporous carbon materials as supercapacitor electrode materials can effectively expand their pore size while maintaining a high specific surface area, and can still satisfy the rapid migration of ions under high current discharge conditions, showing good capacitance performance. At the same time, transition metal oxides have variable valence states and valence electron shel...

Claims

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Application Information

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IPC IPC(8): H01B1/04H01B1/08H01B13/00H01G9/042
Inventor 陈文龙曦赵春霞宋彦宝冯素波陈绍江朱泉峣周静孙华君
Owner WUHAN UNIV OF TECH
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