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Water electrolysis catalyst based on high catalytic activity and crystallinity RuTe2 and preparation method thereof

A technology with high catalytic activity and crystallinity, applied in the field of electrolysis of water, can solve the problems of harsh reaction conditions, poor catalytic performance, poor dispersion of electrolytic water catalysts, etc., and achieve the effect of excellent catalytic activity and good charge density distribution

Active Publication Date: 2020-09-29
YANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of poor dispersion, poor catalytic performance and harsh reaction conditions of existing Ru-based catalysts as electrolytic water catalysts, the present invention provides a RuTe based on high catalytic activity and crystallinity 2 Electrolyzed water catalyst and preparation method thereof

Method used

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  • Water electrolysis catalyst based on high catalytic activity and crystallinity RuTe2 and preparation method thereof
  • Water electrolysis catalyst based on high catalytic activity and crystallinity RuTe2 and preparation method thereof
  • Water electrolysis catalyst based on high catalytic activity and crystallinity RuTe2 and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0051] High catalytic activity and crystalline water electrolysis catalyst RuTe 2 Preparation of / Gr-400 (50:2:2): Disperse 50mg of graphene into a 100mL beaker containing 50mL of ethylene glycol, add 36.9mg of sodium tellurite and 43.6mg of ruthenium chloride in sequence, and stir magnetically at room temperature until the solution Mix evenly, use a solid-liquid microwave synthesis extractor, set the parameter power to 800W, and set the time for 3min, wash the mixture with deionized water, filter and dry to obtain the precursor material. Take 30mg of precursor material, put it into the crucible, under continuous N 2 Under the atmosphere, set the heating rate to 2°C min -1 , the holding time is 2h, heat treatment at 400°C, after cooling to room temperature, the sample is taken out and ground to obtain RuTe based on high catalytic activity and crystallinity 2 Catalyst for electrolysis of water, denoted as RuTe 2 / Gr-400(50:2:2).

[0052] figure 1 High catalytic activity an...

Embodiment 2

[0058] High catalytic activity and crystalline water electrolysis catalyst RuTe 2 / CNT-400 (50:2:2): Disperse 50mg of carbon nanotubes into a 100mL beaker containing 50mL of ethylene glycol, add 36.9mg of sodium tellurite and 43.6mg of ruthenium chloride in turn, and stir magnetically at room temperature until The solution was mixed evenly, using a solid-liquid microwave synthesis extraction instrument, setting the parameter power to 800W, and the time was 3min, using deionized water to wash the mixture, filtering and drying to obtain the precursor material (RuTe 2 / CNT). Take 30mgRuTe 2 / CNT material, placed in the crucible, under continuous N 2 Under the atmosphere, set the heating rate to 2°C min -1 , the holding time is 2h, heat treatment at 400°C, after cooling to room temperature, the sample is taken out and ground to obtain a RuTe based on high crystallinity 2 Catalyst for electrolysis of water, denoted as RuTe 2 / CNT-400(50:2:2).

[0059] Figure 6 For the high ...

Embodiment 3

[0065] High catalytic activity and crystalline water electrolysis catalyst RuTe 2 Preparation of / Gr-300 (50:2:2): Disperse 50mg of graphene into a 100mL beaker containing 50mL of ethylene glycol, add 36.9mg of sodium tellurite and 43.6mg of ruthenium chloride in sequence, and stir magnetically at room temperature until the solution Mix evenly, use a solid-liquid microwave synthesis extractor, set the parameter power to 800W, and set the time for 3min, wash the mixture with deionized water, filter and dry to obtain the precursor material. Take 30mg of precursor material, put it into the crucible, under continuous N 2 Under the atmosphere, set the heating rate to 2°C min -1 , the holding time is 2h, heat treatment at 300°C, after cooling to room temperature, the sample is taken out and ground to obtain RuTe based on high catalytic activity and crystallinity 2 Catalyst for electrolysis of water, denoted as RuTe 2 / Gr-300(50:2:2).

[0066] Figure 11 High catalytic activity ...

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Abstract

The invention discloses a preparation method of a water electrolysis catalyst based on high catalytic activity and crystallinity RuTe2. A carbon material is used as a substrate of the water electrolysis catalyst, and high-crystallinity RuTe2 nano particles are loaded on the substrate. A microwave method and a heat treatment process are adopted; under the action of thermally induced crystallization; the crystallinity of RuTe2 is enhanced along with the rise of the heat treatment temperature; metal Ru and semiconductor Te are coordinated to form the water electrolysis catalyst with high catalytic activity, the water electrolysis catalyst shows excellent HER and OER performances in electrolytes with different pH values, the catalyst can be assembled into a two electrode system, and the performance of the system is superior to that of Pt / C-RuO2. The catalyst has the advantages of simpleness, easy application, and low production cost, is suitable for batch production, and can be widely applied to the fields of water electrolysis industry, solar water electrolysis hydrogen production, fuel cells, organic synthesis and the like.

Description

technical field [0001] The invention belongs to the technical field of electrolyzed water, and relates to a method based on high catalytic activity and crystallinity RuTe 2 Electrolyzed water catalyst and preparation method thereof. Background technique [0002] Hydrogen energy, as a high-energy, clean renewable energy, has attracted widespread attention. Among the many hydrogen production methods, electrochemical hydrolysis hydrogen production is recognized as a relatively simple and practical way. However, in the process of designing a full hydrolysis electrolysis device, there are still problems that need to be solved urgently: (1) In the process of full hydrolysis, the overpotential required for the hydrogen evolution reaction at the cathode and the oxygen evolution reaction at the anode is relatively high, Even the recognized Pt / C, IrO 2 Catalysts also face problems such as low storage capacity, high cost, and poor stability; (2) the incompatibility of materials in t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/057C25B1/04C25B11/08
CPCB01J27/0576C25B1/04C25B11/04B01J35/393B01J35/33Y02E60/36
Inventor 冯立纲杨旭东
Owner YANGZHOU UNIV
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