Regeneration method of raw materials for hydrogen supply system of fuel cell

A raw material regeneration system of a hydrogen supply system of a fuel cell, the raw material regeneration system comprising:

• a hydrogen supply part of a fuel cell vehicle for producing hydrogen and an aluminum compound through a reaction of aluminum and a metal hydroxide;
• and
• a regenerating part for regenerating the aluminum compound into an aluminum metal by recovering the aluminum compound produced in the hydrogen supply part,
• wherein the regenerated aluminum metal is re-supplied as a raw material into the hydrogen supply part of the fuel cell vehicle.

A method of regenerating a raw material for a hydrogen supply system of a fuel cell, the method comprising steps of:

• reacting Al and an aqueous solution of NaOH to produce H2 in a hydrogen supply system of the fuel cell;
• recovering a NaAl(OH)4 liquid produced simultaneously with the H2 in the reacting step;
• precipitating Al(OH)3 from the recovered NaAl(OH)4 liquid;
• heat-treating the precipitated Al(OH)3 to obtain Al2O3;
• reducing the Al2O3 by way of an electrolyte reduction to obtain Al having a surface coated with Al2O3;
• and
• re-supplying the obtained Al as a raw material for producing H2 in the reacting step.