Core-shell structure compound prepared by fuse salt method and preparation method thereof

A technology of core-shell structure and molten salt method, which is applied in the field of materials, can solve the problems of high cost, cumbersome process, and low crystallinity, and achieve the effect of excellent material performance, simple preparation process, and regular crystal structure

Active Publication Date: 2018-12-07
嘉兴企远网信息科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It solves the problems of cumbersome process, high cost and low crysta

Method used

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  • Core-shell structure compound prepared by fuse salt method and preparation method thereof
  • Core-shell structure compound prepared by fuse salt method and preparation method thereof
  • Core-shell structure compound prepared by fuse salt method and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Example 1: Porous CuO@MnO 2 preparation of

[0029] (1) Weigh 150mg (CH3COO) 2 ·Cu·(H 2 O), 3g NaNO 3 , 150 mg of alkylphenol polyoxyethylene ether was mixed and ground evenly, placed in a tube furnace, heated to 350°C for calcination, and kept for 2 hours. After it was cooled to room temperature, the sample was taken out and placed in a centrifuge tube, and washed with distilled water for several times. Once, NaNO3 was removed and dried at 80°C to obtain the precursor target product CuO.

[0030] (2) Weigh 50mg CuO and 50mg KMnO 4 and 3g Na 2 SO 4 Grinding, calcination at 300°C for 2 hours, after cooling to room temperature, take out the sample and place it in a centrifuge tube, add distilled water and wash it several times by centrifugation to remove Na 2 SO 4 , dried at 80°C to obtain the target product CuO@MnO 2 .

[0031] From figure 1 SEM image, it can be found that the porous CuO@MnO obtained in this example 2 Compared with the precursor target produc...

Embodiment 2

[0032] Example 2: Preparation of CuO@NiO

[0033] Cu(OH) 2 Preparation of: Add 20mL 0.1M NaOH dropwise to 20mL 0.05M CuCl 2 , stirred at room temperature for 5min, washed by centrifugation, and dried at 60°C to obtain the transition metal compound precursor Cu(OH) 2 .

[0034] (1) Weigh 150mg Cu(OH) 2 , 3g NaNO 3 Mix and grind evenly with 150 mg of octadecylamine, place in a tube furnace, heat up to 350°C for calcination, and keep for 2 hours. After cooling to room temperature, take out the sample and place it in a centrifuge tube, add distilled water and wash it several times by centrifugation, remove NaNO 3 , dried at 80°C to obtain the precursor target product CuO.

[0035] (2) Weigh 50mg CuO, 50mg Ni(NO 3 ) 2 ·6H 2 O, 5g Na 2 SO 4 Mix and grind evenly, place in a tube, heat up to 300°C for calcination, and keep for 2 hours. After it cools down to room temperature, take out the sample and place it in a centrifuge tube, add distilled water and wash it several time...

Embodiment 3

[0037] Example 3: Porous NiO@Co 3 o 4 preparation of

[0038] (1) Weigh 150mgNi(NO 3 ) 2 ·6H 2 O, 3gNaNO 3 Mix and grind evenly with 150 mg of CO-630, place in a tube furnace, heat up to 500°C for calcination, and keep for 2 hours. After cooling to room temperature, take out the sample and place it in a centrifuge tube, add distilled water and wash it several times by centrifugation, remove NaNO 3 , dried at 80°C to obtain the precursor target product NiO.

[0039] (2) Weigh 50mgNiO, 50mgCo(NO 3 ) 2 ·6H 2 O, 5g LiNO 3 Mix and grind evenly, place in a tube furnace, heat up to 300°C for calcination, and keep for 2 hours. After cooling to room temperature, take out the sample and place it in a centrifuge tube, add distilled water and wash it several times to remove LiNO 3 , dried at 80°C to obtain the precursor target product NiO@Co 4 o 3 . Here the molten salt has a certain reduction or oxidation effect, and also plays a role in the formation of (Li / Na) intercalati...

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Abstract

The invention discloses a core-shell structure compound prepared by a fuse salt method. The compound comprises a core body composed of a metal compound and a shell layer composed of a metal compound covering the core body, wherein the metal compound includes but is not limited to carbide, oxide, sulfide, selenide, antimonide, nitride or phosphide containing an ion intercalation prepared by the fusion method. The specific preparation method is that: a transition metal compound precursor decomposes at a high temperature and releases gas to form a vacancy in the structure, and a metal salt in a molten state is embedded in the vacancy to form an ion intercalation layer, thereby obtaining the transition metal compound having a uniform porous structure. The preparation process is simple, no environmental pollution is generated, and because the product is synthesized at a high temperature, the crystallinity is high, the crystal structure is regular, and the core-shell structured material canproduce a synergistic effect better than the single layer material performance.

Description

technical field [0001] The invention belongs to the technical field of materials, and relates to a method for preparing a core-shell structure compound in molten salt. The core-shell structure compound can be used for faraday quasi-capacitors, electrode materials for lithium batteries, sodium batteries, and enzyme-free glucose sensors. Background technique [0002] With the increasing global demand for energy and people's awareness of environmental protection, the previous energy will no longer meet people's requirements for clean, efficient, safe and economical energy, and the development of clean and green energy will be The top priority of development now. The molten salt method is a new method for preparing nanomaterials developed in recent years. The raw materials required by the method are cheap and easy to obtain, the preparation process is simple, the cost is low, the crystal form of the product is good and the yield is high, and the above-mentioned existing problem...

Claims

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Application Information

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IPC IPC(8): H01G11/30H01G11/46H01G11/86H01M4/36H01M4/48H01M4/505H01M4/525
CPCH01G11/30H01G11/46H01G11/86H01M4/366H01M4/48H01M4/505H01M4/525Y02E60/10
Inventor 王辉曹苗苗王荣方武玉泰
Owner 嘉兴企远网信息科技有限公司
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