>>To produce Hidrogen, you need electric energy, or some very hot source that could be turn to electricity at a high efficiency. This is not a true statement..

>>To produce Hidrogen, you need electric energy, or some very hot source that could be turn to electricity at a high efficiency. This is not a true statement... Aluminum alloys readily liberate H2 from H20 at room temperarure (an exothermic reaction generating roughly equal parts thermal and chemical potential energy - both of which of course can be used for work) [1]. The oxidized aluminum is environmentally benign and can be recycled by applying more energy to deoxydize the product. The 'purification' process is ultimately where the useful energy comes from. The energy to power the purification can come from any number of sources - but as good stewards, we opt for clean energy sources. Al smelting historically produced a lot of carbon, but thanks to R&D by Apple, there are new carbon-free alternatives for this process [2]. At my company we are researching application of this energy infrastructure loop for powering ships (where source water is abundant). Essentalially, the Al+ is your fuel (battery), and from a volumetric energy density perspective (important for ships), you can store about 2X as much as gasoline/diesel - and way better than liquified or compressed H2 storage. However, on a mass energy density perspective (important for automobiles), it is a bit worse (heavier) than hydrocarbon fuels. Again though, each application has it's own constraints when considering an energy storage medium. The automotive or civil sectors aren't the only use-cases for hydrogen fuel cells. One needs to take a look at all sectors to really grasp the global impact. A large part of my job is to explore this big-picutre aspect, because we need to understand the long term infrastructure stability/availability of potential "clean" energy supply chains, and it's VERY complex when you consider process efficiencies over the entire supply chain, raw material abundance and regeneration potential/economics/environmental impacts/speed, geopolitical forces affecting supply chains, the list goes on and on (and on). H2 is an interesting "energy storage" option and it will certainly continue to be researched and applied broadly. 1. PDF - https://www.google.com/url?sa=t&source=web&rct=j&url=https://www1.eere.energy.gov/hydrogenandfuelcells/pdfs/aluminium_water_hydrogen.pdf&ved=2ahUKEwjkm9f-juztAhUuwFkKHbPvBL4QFjABegQIBxAF&usg=AOvVaw1bMfnlyBgz28F8mDBPA7mN https://www.google.com/url?sa=t&source=web&rct=j&url=https:/... 2. https://www.apple.com/newsroom/2018/05/apple-paves-the-way-for-breakthrough-carbon-free-aluminum-smelting-method/ https://www.apple.com/newsroom/2018/05/apple-paves-the-way-f...