A kind of fe-co-mo-p-c series amorphous alloy electrocatalyst and its preparation method and application

A fe-co-mo-p-c, amorphous alloy technology, applied in the direction of electrodes, electrolytic components, electrolytic process, etc., can solve the problems of poor stability, high overpotential, and low current density of electrocatalysts, and achieve low cost and high activity The effect of many sites and good electrocatalytic activity

Active Publication Date: 2020-05-05
HEFEI UNIV OF TECH
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  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to prepare a series of Fe-Co-Mo-P-C series amorphous alloy strips with excellent electrocatalytic activity and high stability for efficient hydrogen evolution reaction, so as to solve the problem of low current density and overpotential of existing electrocatalysts. Problems with high and poor stability

Method used

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  • A kind of fe-co-mo-p-c series amorphous alloy electrocatalyst and its preparation method and application
  • A kind of fe-co-mo-p-c series amorphous alloy electrocatalyst and its preparation method and application
  • A kind of fe-co-mo-p-c series amorphous alloy electrocatalyst and its preparation method and application

Examples

Experimental program
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preparation example Construction

[0033] (2) Preparation of master alloy ingot

[0034] According to the predetermined ratio, the processed Fe, Co, Mo metal elements and C powder, P powder are mixed and proportioned, the raw materials are placed in a vacuum electric arc furnace, and argon gas with a purity of 99.99% is introduced after vacuuming, and the arc is passed through Smelting turns the raw materials into master alloy ingots. In order to ensure the uniformity of the alloy composition, the master alloy is repeatedly smelted in the furnace for more than 4 times, and the ferrophosphorus and carbon powder are smelted as slowly as possible during each smelting process to prevent the volatilization of raw materials due to excessive temperature.

[0035] (3) High vacuum belt

[0036] Put the master alloy ingot into the vacuum induction furnace for secondary smelting. After vacuuming, argon gas with a purity of 99.99% is introduced to adjust the injection pressure. By slowly increasing the induction current, ...

Embodiment

[0038] In this example, a series of Fe-Co-Mo-P-C amorphous alloy strips with different components were prepared according to the above process, and the following characterizations and tests were carried out:

[0039] 1. Put the obtained amorphous alloy strip into an X-ray diffractometer, analyze its crystal structure, and obtain an XRD spectrum. figure 1 It is the X-ray diffraction spectrum of some components Fe-Co-Mo-P-C series amorphous alloy strips obtained in this example. It can be seen from the figure that there is only a single wide and diffuse wide band on the XRD line of the amorphous alloy. No diffraction peaks corresponding to crystals are observed, which is a typical feature of amorphous alloys, and it can be preliminarily concluded that these alloy strips are amorphous structures.

[0040]2. Put the obtained amorphous alloy strip into a DSC apparatus, analyze the thermal stability of the material by differential scanning calorimetry, and obtain its DSC curve. fi...

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Abstract

The invention discloses a Fe-Co-Mo-P-C series amorphous alloy electrocatalyst and its preparation method and application, the composition of which is Fe x co y Mo 80‑x‑y P 20‑z C z , where x, y, and z are the atomic percentages of Fe, Co, and C, respectively, 10≤x≤40, 10≤y≤40, 0≤z≤15. The electrocatalyst of the present invention is prepared by a melt spin quenching method, exhibits excellent vitrification forming ability and good electrocatalytic activity in a wide range of components, is a good electrocatalyst for hydrogen evolution reaction, and has broad commercial application prospects .

Description

technical field [0001] The present invention relates to the electrocatalytic application of amorphous alloy strips, in particular to a Fe-Co-Mo-P-C series amorphous alloy electrocatalyst and its preparation method and application Background technique [0002] With the increasing energy crisis and environmental pollution, the development of various new and renewable energy sources has been highly valued by countries all over the world. As a secondary energy source, hydrogen is clean, non-polluting, efficient, and can be stored and transported. It is regarded as the most ideal energy carrier. Among the current hydrogen production technologies, hydrogen production by electrolysis of water is of great value for solving energy crisis and environmental problems in the future. Catalysis plays a vital role in the design of efficient processes and systems that maximize the value of raw materials while reducing waste generation and energy requirements. [0003] In the early stage of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25B11/06C25B1/04C22C45/00C22C1/02B22D11/06
CPCC22C1/02C22C45/00C25B1/04C25B11/04B22D11/0611C22C1/11Y02E60/36
Inventor 张博单文兵陈文俊卢书强练军蒋伟张发宝
Owner HEFEI UNIV OF TECH
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