Hydrogen storage material, preparation and use thereof

Abstract

The invention discloses a hydrogen storage material for fuel cell, a preparation method and the usage thereof. The hydrogen storage material comprises a borohydride and an absorption material and has advantages of stable performance, easy storage and carry which can control the releasing speed of the hydrogen without filtering the prepared hydrogen and belong to the field of fuel cell.

Description

technical field [0001] The invention relates to a hydrogen storage material for a fuel cell, in particular to a hydrogen storage material for a fuel cell capable of controlling the release rate of hydrogen. The present invention also relates to the preparation method and application of the above-mentioned hydrogen storage material. Background technique [0002] Sodium borohydride is a commonly used complex hydride, which was first synthesized by Schlesinger et al. in 1942. Due to its excellent reducibility and wide range of uses, it has been widely used in industrial production in the European and American markets, but in my country The scope of use is still very small, and there is still room for expansion. [0003] US Patent No. 6 358 488 reports a method for generating hydrogen by using nickel, cobalt or hydrogen storage alloy powder to catalyze the hydrolysis of sodium borohydride. The reaction equation is as follows: [0004] NaBH 4 +2H 2 O→4H 2 +NaBO 2 [0005] ...

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Problems solved by technology

And because it contains a catalyst, it is not easy to control the reaction rate

And during the reaction process, borate is formed to settle at the junction of the hydrophilic material area and the solid hydride area, so that the hydrophilic material loses the role of guiding the fluid, hinders the further reaction of the solid hydride, and reduces the hydrogen production of the solid hydride Rate

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