Sodium borohydride fuel cells

The anion effect of Cl~-and NO~-_3 on hydrogen generation from sodium borohydride solution was studied.It is found that there are two competitive reactions,which produce metal borides and metal hydroxides,respectively.Cl~-can help produce metal borides in the solution,which generates high activities to accelerate the following hydrolytic reaction.While NO~-_3 can induce the producing of metal hydroxides,which has no catalytic activities and will suppress the hydrogen generation reaction.

Sodium borohydride

Borohydride

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Solid-State NaBH4/Co Composite as Hydrogen Storage Material: Effect of the Pressing Pressure on Hydrogen Generation Rate

Energies (2019)

O.V. Netskina E.S. Tayban Anna M. Ozerova O.V. Komova В.И. Симагина

A solid-state NaBH4/Co composite has been employed as a hydrogen-generating material, as an alternative to sodium borohydride solutions, in the long storage of hydrogen. Hydrogen generation begins in the presence of cobalt-based catalysts, immediately after water is added to a NaBH4/Co composite, as a result of sodium borohydride hydrolysis. The hydrogen generation rate has been investigated as a function of the pressure used to press hydrogen-generating composites from a mechanical mixture of the hydride and cobalt chloride hexahydrate. The hydrogen generation rate was observed to increase with the increase of this pressure. Pre-reduction of the cobalt chloride, using a sodium borohydride solution, leveled this dependence with a two-fold decrease in the gas generation rate. According to TEM and XPS data, oxidation of the particles of the pre-reduced cobalt catalyst took place during preparation of the composites, and it is this oxidation that appears to be the main reason for its low activity in sodium borohydride hydrolysis.

Sodium borohydride

Borohydride

10.3390/en12071184

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Hydrolysis of Sodium Borohydride for Supplying Pure Hydrogen to Fuel Cell Vehicle

Xiang Pan

Sodium borohydride can be stored stably in alkaline solution at ambient conditions However, in the present of catalyst, one mol of NaBH4 can be hydrolyzed to liberate four mol of hydrogen Thus, the solution of sodium borohydride provides a fuel of high density of hydrogen for fuel cell vehicle In this paper, the principles and the characteristics of this hydrogen supply technology are introduced, and the application in fuel cell vehicle is reviewed

Sodium borohydride

Borohydride

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Research Progress in Hydrogen Generation by Hydrolysis of Sodium Borohydride

Technology & Development of Chemical Industry (2009)

Hongtao Gao

Among these hydrides,sodium borohydride provided a safe and practical mean of producing hydrogen,made it an attractive source of hydrogen production for proton exchange membrane fuel cells.The basic principle of hydrogen production from sodium borohydride was introduced and reviewed included the recent research progress of the hydrolysis catalysts and reaction kinetics.The commercial foreground of hydrogen production from sodium borohydride was also proposed.

Sodium borohydride

Borohydride

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Solid sodium borohydride as a hydrogen source for fuel cells

Journal of Alloys and Compounds (2008)

Bin Hong Liu Zhou Peng Li S. Suda

Sodium borohydride

Exothermic reaction

10.1016/j.jallcom.2008.01.023

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