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Nanoporous amorphous-state electrocatalytic electrode and preparation method and application thereof

A nanoporous, electrocatalytic technology, applied in the direction of electrodes, electrode shape/type, electrolysis process, etc., can solve the problems of low activity and poor stability of electrocatalysts, and achieve the effects of avoiding catalyst shedding, avoiding activity reduction, and high specific surface area

Active Publication Date: 2019-03-26
FOSHAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Based on this, it is necessary to provide a method for preparing nanoporous amorphous electrocatalytic electrodes for the problems of low activity and poor stability of existing electrocatalysts.

Method used

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  • Nanoporous amorphous-state electrocatalytic electrode and preparation method and application thereof
  • Nanoporous amorphous-state electrocatalytic electrode and preparation method and application thereof
  • Nanoporous amorphous-state electrocatalytic electrode and preparation method and application thereof

Examples

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Embodiment 1

[0033] A method for preparing a nanoporous amorphous Fe-B electrocatalytic electrode, comprising the following steps:

[0034] Step 1: Put Fe, B, and iron-boron compounds in a high-temperature electric furnace, the molar ratio of iron and boron is 3:1, stir evenly after melting, and cool down to obtain an electrocatalytic electrode alloy;

[0035] Step 2: Melt the alloy obtained in Step 1 again, and carry out liquid-phase quenching on a rotating copper disk with a cooling rate of 10 5 K / s, rotating speed is 2500rpm, obtains amorphous Fe-B electrocatalytic electrode;

[0036] Step 3: Soak the amorphous electrocatalytic electrode obtained in step 2 in 50 mM nickel nitrate, and react at 25° C. for 30 minutes to obtain a nanoporous amorphous electrocatalytic electrode.

Embodiment 2

[0038] A method for preparing a nanoporous amorphous Fe-B electrocatalytic electrode is basically the same as that of Example 1, except that the reaction condition in Step 3 is 30 minutes at 50°C.

Embodiment 3

[0040]A method for preparing a nanoporous amorphous Fe-B electrocatalytic electrode is basically the same as that of Example 1, except that the reaction condition in Step 3 is 180 minutes at 50°C.

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Abstract

The invention provides a preparation method of a nanoporous amorphous-state electrocatalytic electrode, and relates to the field of electrochemical catalysis. The method comprises the following stepsthat firstly, metallic raw materials and nonmetallic raw materials are put in proportion, fused and then stirred uniformly, cooling is conducted, and an electrocatalytic electrode alloy is obtained, wherein metallic elements in the metallic raw materials comprise one or more of iron, cobalt, nickel, copper, zinc, titanium, magnesium and molybdenum, and nonmetallic elements in the nonmetallic raw materials comprise one or more of silicon, phosphorus, nitrogen, boron and carbon; secondly, the alloy obtained in the first step is fused again and subjected to quenching, and an amorphous-state electrocatalytic electrode is obtained; and thirdly, the amorphous-state electrocatalytic electrode obtained in the second step is soaked in an erosion agent for reacting, and the nanoporous amorphous-state electrocatalytic electrode is obtained. The nanoporous amorphous-state electrocatalytic electrode prepared through the method has the three-dimensional porous structure, the high specific surface area and the high-activity core-shell structure, and the electrocatalytic activity conductivity is excellent.

Description

technical field [0001] The invention relates to new energy material technology and the field of electrochemical catalysis, in particular to a nanoporous amorphous electrocatalytic electrode and its preparation method and application. Background technique [0002] With the intensification of global warming, seeking clean, efficient and sustainable non-fossil new energy is the key to solving environmental problems and greenhouse gas emissions. Electrochemical hydrogen production is a traditional, sustainable and scalable hydrogen production technology. Therefore, in recent years, high-efficiency and low-cost hydrogen production catalysts have become a research hotspot for scientists around the world. Designing and developing new non-noble metal electrolysis catalysts to replace active noble metal catalysts such as platinum and iridium is a hot topic in current research. [0003] The preparation of existing non-precious metal catalysts is affected by many factors, such as the ...

Claims

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Application Information

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IPC IPC(8): C25B11/04C25B11/03C25B1/02C22C33/04
CPCC22C33/003C22C33/04C25B1/02C25B11/04C25B11/031Y02E60/36
Inventor 胡飞熊宇杰刘金花
Owner FOSHAN UNIVERSITY
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