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Preparation method and application of one-dimensional silver/manganese oxide composite nanomaterials with different shapes

A nanomaterial, manganese oxide technology, applied in manganese oxide/manganese hydroxide, nanotechnology, nanotechnology and other directions, can solve the problems of uneven size distribution of silver particles, cumbersome reaction steps, incomplete modification of manganese oxide materials, etc. The effect of uniform distribution, uniform size distribution and good electrochemical performance

Active Publication Date: 2016-04-27
浙江祺跃科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in terms of preparation conditions, the reaction temperature is often above 120°C, the reaction time is above 2 hours, and the reaction steps are cumbersome; in terms of product results, the size distribution of silver particles is often uneven and the modified manganese oxide material is not complete.

Method used

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  • Preparation method and application of one-dimensional silver/manganese oxide composite nanomaterials with different shapes
  • Preparation method and application of one-dimensional silver/manganese oxide composite nanomaterials with different shapes
  • Preparation method and application of one-dimensional silver/manganese oxide composite nanomaterials with different shapes

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Step 1: Put 20mg of silver nanowires in 10ml of deionized water, and perform ultrasonic treatment (10min) to obtain a uniformly dispersed aqueous solution of silver nanowires;

[0035] Step 2: Dissolve 158mg of potassium permanganate in 30ml of deionized water to form potassium permanganate aqueous solution, and heat to 80°C;

[0036] Step 3: Use a dropper to gradually drop the silver nanowire aqueous solution in Step 1 into the potassium permanganate solution in Step 2, stir for 90 minutes with magnetic force, and cool to room temperature;

[0037] Step 4: The product obtained in Step 3 is centrifuged, washed, and dried in a drying oven to obtain a one-dimensional silver / manganese oxide nanotube composite nanomaterial powder.

[0038] attached Picture 1-1 It is a scanning electron micrograph of the one-dimensional silver / manganese oxide nanotube composite nanomaterial obtained after the reaction. The formation of nanotubes can be determined according to the sample co...

Embodiment 2

[0040] Step 1: Put 20mg of silver nanowires in 10ml of deionized water, and perform ultrasonic treatment (10min) to obtain a uniformly dispersed aqueous solution of silver nanowires;

[0041] Step 2: Dissolve 158 mg of potassium permanganate in 30 ml of deionized water to form an aqueous solution of potassium permanganate, add concentrated sulfuric acid with a mass fraction of 98%, adjust the pH of the solution to 0.76, and heat to 80°C;

[0042]Step 3: Use a dropper to gradually drop the silver nanowire aqueous solution in Step 1 into the potassium permanganate solution in Step 2, stir for 90 minutes with magnetic force, and cool to room temperature;

[0043] Step 4: The product obtained in Step 3 is centrifuged, washed, and dried in a drying oven to obtain a one-dimensional silver / manganese oxide nanosheet composite nanomaterial powder.

[0044] attached diagram 2-1 It is a scanning electron micrograph of the one-dimensional silver / manganese oxide nanosheet composite nanom...

Embodiment 3

[0046] Step 1: Put 20mg of silver nanowires in 10ml of deionized water, and perform ultrasonic treatment (10min) to obtain a uniformly dispersed aqueous solution of silver nanowires;

[0047] Step 2: Dissolve 158 mg of potassium permanganate in 30 ml of deionized water to form an aqueous solution of potassium permanganate, add concentrated sulfuric acid with a mass fraction of 98%, adjust the pH of the solution to 2.0, and heat to 80°C;

[0048] Step 3: Use a dropper to gradually drop the silver nanowire aqueous solution in Step 1 into the potassium permanganate solution in Step 2, stir for 90 minutes with magnetic force, and cool to room temperature;

[0049] Step 4: The product obtained in Step 3 is centrifuged, washed, and dried in a drying oven to obtain a one-dimensional silver / manganese oxide nanosheet composite nanomaterial powder.

[0050] attached image 3 It is the transmission electron microscope picture of the one-dimensional silver / manganese oxide nanosheet compo...

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Abstract

The invention discloses a preparation method and an application for one-dimensional silver / manganese oxide composite nano-materials with different morphologies, which belong to the fields of electrochemistry and new energy materials. The preparation method comprises the following steps of: adjusting two pieces of potassium permanganate solution with certain concentrations to be acidic and neutral, and heating the solution to 80 DEG C; taking silver nano-wires with a certain mass, preparing the silver nano-wires into silver nano-wire aqueous solution with a certain concentration, filling the silver nano-wire aqueous solution in the potassium permanganate solution above-mentioned, magnetically stirring for 90 minutes, cooling to a room temperature, and centrifuging, washing and drying to obtain two one-dimensional silver / manganese oxide composite nano-materials with different morphologies respectively. Relative to other preparation methods for metal / oxide composite materials, the preparation method disclosed by the invention is simple in process (one-step method), simple in the needed device and operation, moderate and easily-controllable in conditions, short in reaction time, uniform in the morphologies and size distribution of the obtained products, and suitable for large-scale production. The one-dimensional silver / manganese oxide composite nano-materials are excellent in electrochemical performance, and wide in application potentiality in the aspects of batteries, supercapacitors, catalysis and the like.

Description

technical field [0001] The invention discloses a preparation technology of a composite nanomaterial, in particular to a preparation method of a one-dimensional silver / manganese oxide composite nanomaterial with different shapes, which belongs to the field of electrochemistry and new energy, and is used in batteries, supercapacitors, catalysis, etc. aspect has important uses. Background technique [0002] As a new type of energy storage device, electrochemical supercapacitor has a much higher energy density than traditional capacitors and a much higher power density than batteries. It has the advantages of high energy density, high power density, and long cycle life. It is well known that electrode materials widely used in supercapacitors include porous carbon materials, transition metal oxides, and conductive polymers (Reference 1, P. Simon, Y. Gogotsi, "Materials for electrochemical capacitors" Nature Materials 7 (2008), 845–854.). Manganese oxide among transition metal ox...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F1/00C01G45/02B82Y40/00B82Y30/00
Inventor 李永合付皓予张跃飞
Owner 浙江祺跃科技有限公司