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High-catalytic activity probe material and preparation method and application thereof

A high catalytic activity and catalytic technology, applied in the direction of hybrid capacitor electrodes, etc., can solve the problem of less application of negative electrode materials, achieve controllable reaction components, improve electrical conductivity, and controllable experimental operations

Inactive Publication Date: 2017-08-15
深圳理大科技产业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In the field of electrochemistry, SnO 2 Micro-nano materials are widely used as positive and negative electrode materials in lithium-ion batteries, but they are mostly used as positive electrode materials in supercapacitor applications, and less used as negative electrode materials. Therefore, it is necessary to develop a material that can solve the above problems

Method used

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  • High-catalytic activity probe material and preparation method and application thereof
  • High-catalytic activity probe material and preparation method and application thereof

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preparation example Construction

[0029] The preparation method of the highly catalytically active probe material of the present invention includes pretreatment and preparation steps, specifically including:

[0030] A. Pre-processing:

[0031] 1) Preparation of tin dioxide powder: add 5-70 parts by weight of tin chloride powder and 1-5 parts by weight of surfactant into 60-450 parts by weight of water, stir for 20-40 minutes, add weight Mix 12-120 parts of peroxide, react at constant temperature and equal volume at 150-220°C for 3-5 hours, centrifuge, wash, and dry to obtain black nano-tin dioxide powder;

[0032] 2) Preparation of rare earth hydrochloric acid solution: adding 1 to 10 parts by weight of rare earth oxides into the concentrated acid, stirring at a constant speed of 3000 r / min for 60 to 120 minutes to obtain a rare earth hydrochloric acid solution with a concentration of 0.05 to 0.7% by mass;

[0033] B. Preparation: Evenly disperse the black nano-tin dioxide powder obtained in step A into the ...

Embodiment 1

[0042] Add 20 g of tin chloride powder and 3 g of sodium dodecylbenzenesulfonate to 250 g of water. Stir for 30 minutes, add 80g of sodium peroxide and mix and transfer to the reactor (the inner lining in the still is polytetrafluoroethylene), stir and mix evenly. Reaction was carried out at constant temperature and equal volume at 200°C for 3 hours. After the reaction is finished, the product in the kettle is centrifuged, and the obtained precipitate is continuously washed by centrifugation, and dried to obtain nano-tin dioxide powder. Add the powder to Ce(NO 3 ) 3 ·6H 2 O solution, ultrasonically dispersed for 2 hours, aged at room temperature for 6 hours, and dried by rotary evaporation to finally obtain rare earth co-doped tin dioxide powder.

Embodiment 2

[0044] 50 g of tin chloride powder and 5 g of sodium dodecylbenzenesulfonate were added to 350 g of water. Stir for 30 minutes, add 100g of sodium peroxide and mix and transfer to the reaction kettle (the inner lining in the kettle is polytetrafluoroethylene), stir and mix evenly. React at constant temperature and equal volume for 4 hours at 150°C. After the reaction is finished, the product in the kettle is centrifuged, and the obtained precipitate is continuously washed by centrifugation, and after drying, the nano-tin dioxide powder can be obtained. Add the powder to La(NO 3 ) 3 ·6H 2 O solution, ultrasonically dispersed for 1 h, aged at room temperature for 3 h, and dried by rotary evaporation to finally obtain rare earth co-doped tin dioxide powder.

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Abstract

The invention discloses a high-catalytic activity probe material and a preparation method and application thereof. The high-catalytic activity probe material is rare-earth element co-coped high-catalytic activity SnO2 powder and is prepared from raw materials of tin chloride powder in 5-70 parts by weight and a rare-earth oxide in 1-10 parts by weight. The application is the application of the high-catalytic activity probe material in preparation of a supercapacitor negative electrode material. By co-doping of rare-earth elements in black tin dioxide and a surface of the black tin dioxide, a rare-earth salt solution is uniformly dissolved in a tin dioxide micronano structure; and by doping, the growth of a tin dioxide crystal can be effectively promoted, and a crystal phase interface is relatively good in bonding.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, and in particular relates to a probe material with high catalytic activity and its preparation method and application. Background technique [0002] Tin dioxide (SnO 2 ) is an important wide-bandgap semiconductor with a band gap of 3.6eV. Due to its special electrical and optical properties, it is widely used in lithium-ion battery charging and discharging, solar energy storage, gas-sensitive materials, and photocatalytic reactions. However, pure SnO 2 There are disadvantages such as poor stability and low sensitivity, and it is often necessary to improve its performance by changing the shape or doping. [0003] Rare earth elements have a special unfilled 4f-layer electron layer structure and are widely used in the fields of catalysts, electronics, optics, etc. The doping of rare earth elements as catalysts can not only promote the improvement or even increase the activity, selectivit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/24H01G11/46H01G11/30
CPCH01G11/24H01G11/30H01G11/46Y02E60/13
Inventor 宋驁天汪远昊
Owner 深圳理大科技产业有限公司
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