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Preparation method of spatial network-like Fe2O3 composite material electrode

A composite material and space network technology, applied in the field of composite electrode preparation, can solve the problems of complex manufacturing process, small electricity storage capacity, complex preparation process, etc., and achieve the effects of low synthesis cost, large specific surface area and high reproducibility

Active Publication Date: 2013-04-17
ANHUI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the increasing shortage of petroleum resources and the pollution pressure brought to the environment during use, traditional energy storage batteries can no longer meet the needs of modern green and efficient electronic products.
There are many defects in their use, such as dry batteries, which cannot be recharged repeatedly during use, and waste dry batteries cause serious environmental pollution; lead batteries pollute the environment too much after use; lithium-ion batteries are expensive
The common problems of the above batteries are poor performance of repeated charge and discharge, short service life and small power storage capacity.
[0004] Up to now, although there are many manufacturing techniques for capacitor electrode materials, they generally belong to the category of bulk materials, and the manufacturing process is complicated, mostly involving the use of rare metals and precious metals.
Chinese patent CN101921108A provides a method for preparing strontium barium titanate-based ultrafine powder; Chinese patent CN102115323A discloses a method for manufacturing a doped modified barium titanate-based ceramic capacitor material; Chinese patent CN102623188A provides a Preparation method of doped manganese oxide octahedral molecular sieve; Chinese patent CN102115326A provides a method for preparing doped modified strontium zirconate-based medium and high voltage ceramic capacitor materials, etc. The preparation of all related capacitor electrodes is mostly bulk materials, energy storage The size and repeated charging performance are far from meeting the actual needs, and its preparation process is relatively complicated.

Method used

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  • Preparation method of spatial network-like Fe2O3 composite material electrode
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  • Preparation method of spatial network-like Fe2O3 composite material electrode

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] In the ultrasonic cleaning machine, clean the iron sheet with anhydrous acetone, absolute ethanol, hydrochloric acid with a weight concentration of 36%-38%, distilled water, and absolute ethanol in sequence;

[0040] The thickness of the iron sheet is 1 cm, and the length is 4 cm.

[0041] Under room temperature and magnetic stirring conditions, mix 2 mL HCl (36%-38%) with 10 mL ethanol evenly, mix 10 mL oleic acid with 10 mL absolute ethanol, and mix the two solutions under magnetic stirring , to prepare a sol-gel acidic solution.

[0042] Transfer the prepared sol-gel acidic solution to a 60 mL reaction vessel, then, then transfer 1×4 cm 2 The treated iron sheet is cleaned and treated, and immersed in the above-mentioned sol-gel acidic solution, so that the area of ​​the iron sheet exposed on the liquid surface is 1×1 cm 2 . Tighten the lid of the kettle, and react in an oven at 60°C for 6 hours. After the reaction, the kettle was taken out and cooled to room temp...

Embodiment 2

[0045] In the ultrasonic cleaning machine, clean the iron sheet with anhydrous acetone, absolute ethanol, hydrochloric acid with a weight concentration of 36%-38%, distilled water, and absolute ethanol in sequence;

[0046] The thickness of the iron sheet is 1 cm, and the length is 4 cm.

[0047]Under room temperature and magnetic stirring, mix 2 mL HCl (36%-38%) with 10 mL ethanol uniformly, mix 10 mL oleic acid with 10 mL absolute ethanol, and mix the two solutions under magnetic stirring , to prepare a sol-gel acidic solution.

[0048] Transfer the prepared sol-gel acidic solution to a 60 mL reaction vessel, then, then transfer 1×4 cm 2 The treated iron sheet has been cleaned and treated, and immersed in the above-mentioned sol-gel acidic solution, and the iron sheet exposed on the liquid surface is 1×1 cm 2 . Tighten the lid of the kettle, and react in an oven at 60° C. for 4 hours. After the reaction, the kettle was taken out and cooled to room temperature naturally, ...

Embodiment 3

[0051] The iron sheet processing steps are the same as in Example 1.

[0052] Under room temperature and magnetic stirring conditions, uniformly mix 2 mL HCl (36%-38%) with 10 mL ethanol, 10 mL oleic acid and 10 mL ethanol, and mix the two solutions under magnetic stirring to prepare A sol-gel acidic solution.

[0053] Transfer the prepared sol-gel acidic solution to a 60 mL reaction vessel, then, then transfer 1×4 cm 2 The treated iron sheet has been cleaned and treated, and immersed in the above-mentioned sol-gel acidic solution, and the iron sheet exposed on the liquid surface is 1×1 cm 2 . Tighten the lid of the kettle and react in an oven at 60°C for 2 hours. After the reaction is over, take out the kettle and cool it down to room temperature naturally, cover the iron sheet with a layer of red iron oxide, wash it with ethanol, and dry the iron sheet with iron oxide grown naturally to obtain an iron-iron oxide composite electrode, iron oxide Mass / area ratio with iron e...

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Abstract

The invention discloses a preparation method of a spatial network-like Fe2O3 composite material electrode. The method comprises the following steps of: a, cleaning an iron sheet; b, preparing sol-gel acidic solution; and c, preparing the composite electrode. Compared with the prior art, the preparation method has the advantages of high repeatability, easiness and convenience in operation, low energy consumption, ultra-high electric capacity of 688 F / g, quick charging and discharging under large current density, low cost and suitability for industrial large-scale preparation; and the prepared 3D (Three Dimensional) burr-shaped Fe2O3 has uniform shape, uniformly covers the surface of an iron electrode, has a large specific surface area and can be fully contacted with electrolyte solution as a capacitor material so as to realize quick and efficient charging and discharging.

Description

technical field [0001] The invention belongs to a preparation method of a capacitor electrode, in particular to a preparation method of a composite electrode. Background technique [0002] With the rapid development of modern high-tech electronic technology, more and more portable electronic products have emerged in our daily life and become an indispensable part of life. The performance of these electronic products all involves a key issue, that is, the energy storage capacity. Due to the increasing shortage of petroleum resources and the pollution pressure brought to the environment during use, traditional energy storage batteries can no longer meet the needs of modern green and efficient electronic products. They have multiple defects in use, such as dry batteries, which cannot be recharged during use, and waste dry batteries pollute the environment seriously; lead batteries pollute the environment too much after use; lithium-ion batteries are expensive. The common prob...

Claims

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Application Information

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IPC IPC(8): H01G11/86H01G11/46
Inventor 张小俊于刘涛
Owner ANHUI NORMAL UNIV
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