Multi-valence-state vanadium oxide flexible electrode preparation method

A vanadium oxide and flexible electrode technology, which is applied in the field of multivalent vanadium oxide flexible electrode preparation, can solve problems such as difficult operation and complicated process flow, and achieve electrochemical performance improvement, safe and reliable process, and low reaction temperature Effect

Active Publication Date: 2019-09-06
SICHUAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The above two methods all have the disadvantages of c

Method used

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  • Multi-valence-state vanadium oxide flexible electrode preparation method
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[0025] One aspect of the present invention provides a method for preparing a multivalent vanadium oxide flexible electrode. In an exemplary embodiment of the method for preparing a multivalent vanadium oxide flexible electrode of the present invention, the preparation method may include:

[0026] In step S01, the carbon cloth is activated to obtain an activated carbon cloth.

[0027] In this embodiment, the method for activating the carbon cloth may include arranging the carbon in a container (for example, a reactor) containing hydrogen peroxide for activation treatment. The temperature of the activation treatment may be 120°C to 200°C. Further, the temperature of the activation treatment may be 150°C to 200°C. For example, it can be 180°C. The mass concentration of hydrogen peroxide can be 0.5% to 24.5%. Further, the mass concentration of hydrogen peroxide may be 0.5% to 20.0%. For example, it can be 3%. The appropriate activation temperature and hydrogen peroxide concentrati...

Example

[0044] Example 1

[0045] (1) The interception size is 2.5×6cm 2 , A commercial carbon cloth with a thickness of 350μm, then ultrasonically cleaned with a mixed solution of water / ethanol / nitric acid, washed and dried.

[0046] (2) Put the carbon cloth cleaned in step (1) into the reaction kettle, the concentration of hydrogen peroxide in the reaction kettle is 3wt%, the reaction temperature is set to 200°C, and the reaction time is 12 hours.

[0047] (3) After the reaction, let it cool to room temperature, wash and dry to obtain activated carbon cloth, such as figure 2 Shown.

[0048] (4) Fix the activated carbon cloth obtained in step (3) on the wall of the beaker, and add ethylene glycol and metavanadate at a concentration of 21 mmol / L to the beaker.

[0049] (5) Put the sample obtained in step (4) into an oil bath at 120°C and keep it under stirring for 2 hours until the reaction is complete.

[0050] (6) After the reaction is completed, the product of step (5) is washed and dried, a...

Example

[0052] Example 2

[0053] (1) The interception size is 2.5×6cm 2 , A commercial carbon cloth with a thickness of 350μm, then ultrasonically cleaned with a mixed solution of water / ethanol / nitric acid, washed and dried.

[0054] (2) Put the carbon cloth cleaned in step (1) into a reaction kettle, the concentration of hydrogen peroxide in the reaction kettle is 12.7% by weight, the reaction temperature is set to 200°C, and the reaction time is 12 hours.

[0055] (3) After the reaction, the carbon cloth is cooled to room temperature, washed and dried to obtain the activated carbon cloth.

[0056] (4) Fix the activated carbon cloth obtained in step (3) on the wall of the beaker, and add ethylene glycol and metavanadate at a concentration of 42 mmol / L to the beaker.

[0057] (5) Put the sample obtained in step (4) into an oil bath at 200°C and keep it under stirring for 5 hours until the reaction is complete.

[0058] (6) After the reaction is completed, the product of step (5) is washed and d...

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Abstract

The invention provides a multi-valence-state vanadium oxide flexible electrode preparation method. The preparation method includes steps: arranging carbon cloth in hydrogen peroxide in mass concentration of 0.5%-24.5%, subjecting the carbon cloth to activating treatment at 120-200 DEG C, cooling, cleaning, and drying to obtain activated carbon cloth; mixing the activated carbon cloth, ethylene glycol and metavanadate, heating, stirring until reaction is finished, cleaning, drying, and controlling a heat preservation atmosphere, a heat preservation temperature and heat preservation time to obtain a multi-valence-state vanadium oxide flexible electrode after heat preservation is finished, wherein the concentration of metavanadate in an activated carbon cloth, ethylene glycol and metavanadatemixture is 20mmol/L-42.8mmol/L, and the heating temperature is 120-200 DEG C. A flexible electrode preparation process is simple, no special pressure device is needed, low reaction temperature and short time are realized, and a potential of large-scale application is achieved.

Description

technical field [0001] The invention relates to the technical field of electrode material preparation, and more specifically, relates to a method for preparing a multivalent state vanadium oxide flexible electrode. Background technique [0002] At present, there are two main methods for preparing flexible electrodes: one is the traditional electrode preparation method, and the active material, binder, and conductive agent are evenly mixed and then loaded into the current collector; the other is to use some technological methods such as water Thermal method, electrodeposition, vapor deposition and other methods directly load the active material to the current collector. The above two methods all have the disadvantages of complex technological process and difficult operation. Contents of the invention [0003] In view of the deficiencies in the prior art, one purpose of the present invention is to solve one or more problems in the above prior art. For example, one of the o...

Claims

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Application Information

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IPC IPC(8): D06M11/50D06M13/148D06M11/47H01G11/46H01G11/86D06M101/40
CPCD06M11/47D06M11/50D06M13/148H01G11/46H01G11/86Y02E60/13
Inventor 黄婉霞吕祥唐露蒋跃进唐际斌
Owner SICHUAN UNIV
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