FeCoMoPC series amorphous alloy for alkaline fully-decomposed water and preparation method of amorphous alloy

Abstract

The invention discloses a FeCoMoPC series amorphous alloy for alkaline fully-decomposed water and a preparation method of the amorphous alloy, and relates to the field of water electrolysis hydrogen production catalysts. The component of the FeCoMoPC series amorphous alloy is (Fe<0.5>Co<0.5>)<80-x>Mo<x>P<13>C<7>, x is greater than or equal to 0 and less than or equal to 10, x is the atomic percentage of an element Mo, and the amorphous alloy can simultaneously catalyze hydrogen evolution and oxygen evolution in an alkaline environment and can be used as a full-water-splitting bifunctional catalyst. The preparation method of the porous FeCoMoPC amorphous alloy comprises the following steps: preparing a FeCoMoPC amorphous alloy strip according to the percentage content of each atom, performing constant-potential corrosion on the strip by adopting a three-electrode system of an electrochemical workstation and taking the FeCoMoPC amorphous alloy strip as a working electrode, and after the corrosion is finished, cleaning and naturally drying a sample to obtain the porous FeCoMoPC amorphous alloy, namely, the FeCoMoPC series amorphous alloy used for the alkaline complete water decomposition. The method is simple and controllable, the problem that the active specific surface of an amorphous strip is small is solved, and the prepared FeCoMoPC series amorphous alloy has the advantages of being self-supporting, low in cost and good in electro-catalytic performance.

Description

technical field [0001] The invention relates to an amorphous alloy and a preparation method thereof, in particular to a FeCoMoPC-based amorphous alloy used for alkaline total water splitting and a preparation method thereof, and belongs to the technical field of electrolyzed water hydrogen production catalysts. Background technique [0002] The energy shortage and environmental pollution caused by economic development are becoming more and more serious. For the sustainable development of society, it is urgent to develop green new energy. Compared with renewable energy such as wind energy, solar energy, and biomass energy, hydrogen is a clean and efficient energy carrier with high energy density, high combustion calorific value and clean combustion product H 2 O. Hydrogen production by water electrolysis is not only simple in process, but also has zero pollution gas emissions, so it is regarded as the most promising technology for producing high-purity hydrogen and developin...

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Problems solved by technology

[0007] Purpose of the invention: In view of the problems that the existing FeCoPC-based amorphous alloys only show acidic hydrogen evolution activity, and the active specific surface area of ​​the strip is small, and the electrocatalytic effect is poor, the present invention provides a FeCoMoPC-based amorphous alloy for alkaline total water splitting alloy, and provide a preparation method of the amorphous alloy, which can effectively improve the activity of the amorphous alloy, thereby improving the electrocatalytic effect

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