Anode catalyst of direct borohydride fuel cell and preparation method thereof

Abstract

The invention relates to an anode catalyst of a direct borohydride fuel cell, a preparation method of the anode catalyst, the direct borohydride fuel cell and the anode catalyst of the direct borohydride fuel cell, the anode catalyst of the direct borohydride fuel cell is LaMgNi series A2B7 type hydrogen storage alloy, the molecular formula of the hydrogen storage alloy is (Mm<1-x>Mgx)Ni2.485Co0.525Mn0.28Al0.21, wherein x=0.1-0.5, and Mm is misch metal which is composed of, by weight, 63.1%of La, 26.0% of Ce, 2.7% of Pr and 8.2% of Nd. The anode catalyst is a La-Mg-Ni series A2B7 type hydrogenstorage alloy, which not only has direct catalytic capability, but also can adsorb (or store) generated hydrogen and release the hydrogen in an electric energy form; the fuel utilization rate is improved through dual action, and the problems that in the prior art, precious metal serving as the anode catalyst is high in price and high in cost performance are solved; and a common hydrogen storage alloy is poor in catalytic activity.

Description

technical field [0001] The present invention relates to the field of fuel cells, in particular to an anode catalyst for a direct borohydride fuel cell, a preparation method thereof, and a direct borohydride fuel cell. Background technique [0002] The limited consumption of fossil energy causes serious environmental pollution. Research on clean new energy and new energy technology that can replace fossil energy is an urgent issue to be solved by all mankind. As a clean energy with abundant reserves, wide sources and high energy density, hydrogen energy has attracted much attention. Due to the advantages of high energy conversion efficiency, high energy density, low environmental pollution, low noise, reliable performance and long service life, fuel cells have become a new energy technology that people are actively researching and developing. Direct borohydride fuel cell (Direct Borohydride Fuel Cell, DBFC) is a kind of energy storage in borohydride BH 4 - A new type of f...

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is that, for the above-mentioned problems of the prior art, a kind of anode catalyst of direct borohydride fuel cell is provided, and this anode catalyst is La-Mg-Ni system A 2 B 7 type hydrogen storage alloy, not only has direct catalytic ability, but also can absorb (or store) the generated hydrogen, and then release it in the form of electric energy, and improve fuel utilization through dual functions, aiming to solve the problem of noble metals used as anodes in the prior art. The price of the catalyst is high, and the technical problem of the poor catalytic activity of ordinary hydrogen storage alloys

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