Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of ruthenium/carbon double shell electrolysis water catalyst and preparation method thereof

A catalyst and double-shell technology, which is applied in the field of electrolyzed water catalyst preparation, can solve the problems of low intrinsic activity-to-mass ratio activity, and achieve the effects of low cost, easy industrialization, and high catalytic activity

Inactive Publication Date: 2020-02-21
河南郑大催化技术研究院有限公司
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although N-doped carbons combined with non-noble metals have also been studied, their intrinsic activity (TOF) and / or mass specific activity is also much lower than that of Pt catalysts.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of ruthenium/carbon double shell electrolysis water catalyst and preparation method thereof
  • A kind of ruthenium/carbon double shell electrolysis water catalyst and preparation method thereof
  • A kind of ruthenium/carbon double shell electrolysis water catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A preparation method of a ruthenium / carbon double shell electrolysis water catalyst, the steps are as follows:

[0030] (a) Preparation of SiO by Stöber method 2 Nanospheres: 10 mL of concentrated ammonia water with a mass concentration of 28%, 40 mL of absolute ethanol, and 50 mL of water were placed in a 500 mL three-neck flask, magnetically stirred at 1000 rpm, and then 9 mL of tetraethyl orthosilicate and 91 mL of absolute ethanol were measured Place in a 250 mL beaker, pour into a three-neck flask, stir at 1000 rpm for 1 min, then adjust the speed to 260 rpm, stir for 22 h, and finally wash by centrifugation (8000 rpm, 5 min), and vacuum dry at 60 °C for 6 h. Prepared SiO 2 nanospheres;

[0031] (b), SiO2 2 Modification of nanospheres: weigh 1.5 g SiO 2 Nanospheres were placed in a 100 mL three-neck flask, 50 mL of anhydrous toluene was added, ultrasonically dispersed for 30 min, 4.5 mL of silane coupling agent (KH550) was added, refluxed in an oil bath at 135 ...

Embodiment 2

[0037] The difference from Example 1 is that in step (c), the modified SiO 2 The amount of nanospheres was changed to 150 mg, that is, the modified SiO 2 Nanospheres and RuCl 3 The mass ratio of is changed into 3: 2, and others are all the same as embodiment 1.

Embodiment 3

[0039] The difference from Example 1 is that in step (c), the volume ratio of absolute ethanol and water is changed to 1:3, and the others are the same as in Example 1.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
diameteraaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the technical field of water electrolysis catalyst preparation and discloses a ruthenium / carbon double-shell electrolysis water catalyst and a preparation method thereof. The catalyst has a hollow sphere structure, and the shell of the hollow sphere is a ruthenium / carbon double shell, and the outer shell is carbon and the inner shell is Ru. Preparation of SiO by Stöber method 2 Nanospheres, SiO with silane coupling agent 2 Nanospheres are modified; in terms of mass ratio, SiO 2 Nanosphere: RuCl 3 =1~5:2, the modified SiO 2 Nanospheres, RuCl 3 Hydrothermal reaction to prepare SiO 2 @RuO 2 L; in SiO 2 @RuO 2 L is coated with phenolic resin to prepare SiO 2 @RuO 2 L@phenolic resin; calcined and etched with HF solution to obtain a ruthenium / carbon double-shell catalyst. The ruthenium / carbon double-shell catalyst prepared by the method of the invention has high hydrogen evolution reaction (HER) catalytic activity, good stability, low cost, and easy industrialization.

Description

technical field [0001] The invention belongs to the technical field of preparation of electrolytic water catalysts, and in particular relates to a ruthenium / carbon double-shell electrolytic water catalyst and a preparation method thereof. Background technique [0002] With the depletion of traditional energy reserves, human beings have been devoting themselves to the development of new energy sources. Due to its high energy density, green and pollution-free, hydrogen can be used as an excellent energy carrier. Among various hydrogen production methods, the hydrogen evolution reaction (HER) is the most cost-effective method. So far, Pt-based materials are considered to be the most efficient HER catalysts, and their catalytic activity has become a touchstone for judging other alternative catalysts. However, high cost and low kinetics limit their large-scale production and large-scale commercial application. Many studies have attempted to develop catalysts based on transitio...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/46B01J35/08C25B1/04C25B11/04
CPCC25B1/04B01J23/462C25B11/051C25B11/091B01J35/33B01J35/51Y02E60/36
Inventor 刘仲毅汪海洋彭智昆李保军张硕吴记闯
Owner 河南郑大催化技术研究院有限公司