Preparation of hydrogen-storage material used for fuel cell

Abstract

The invention discloses a method for preparing hydrogen storage materials for fuel cells, which belongs to the field of fuel cells. The method includes uniformly mixing borohydride, hydroxide, water absorption materials and a catalyst. Hydrogen storage materials prepared according to the method provided by the invention have the advantages of stable property, easy storage and portability, which can control hydrogen releasing speed without filtering prepared hydrogen.

Description

technical field [0001] The invention relates to a method for preparing a hydrogen storage material for a fuel cell, in particular to a method for preparing a hydrogen storage material for a fuel cell capable of controlling the release rate of hydrogen. 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 catalyzing the hydrolysis of sodium borohydride using nickel, cobalt or hydrogen storage alloy powder. The reaction equation is as follows: [0004] NaBH 4 +2H 2 O→4H 2 +NaBO 2 [0005] This hydrogen supply method has the following advantages: (1) Sodium borohydride hy...

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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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