This method consumes both the aluminum and the gallium.
OK but first consider how much energy is required to create aluminum. And to create gallium.
Hint: it's FAR more than electrolysis which is far more than hydrogen from natural gas.
Aluminum is electrolytically refined at high heated temperature. It's so energy intensive that most aluminum refineries are co-located next to hydroelectric plants. Gallium primarily comes from NEW aluminum extraction from ore and none comes from recycling aluminum - the former takes 2x more energy than the latter.
Just an order-of-magnitude, back-of-the-envelope estimate easily shows you can NOT generate energy for a hydrogen economy this way under any circumstances.
This method consumes both the aluminum and the gallium.
OK but first consider how much energy is required to create aluminum. And to create gallium.
Hint: it's FAR more than electrolysis which is far more than hydrogen from natural gas.
Aluminum is electrolytically refined at high heated temperature. It's so energy intensive that most aluminum refineries are co-located next to hydroelectric plants. Gallium primarily comes from NEW aluminum extraction from ore and none comes from recycling aluminum - the former takes 2x more energy than the latter.
Just an order-of-magnitude, back-of-the-envelope estimate easily shows you can NOT generate energy for a hydrogen economy this way under any circumstances.