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"Hydrogen production now involves a large amount of CO2 emissions," Sunkara said. "Once this alloy material is widely available, it could conceivably be used to make zero-emissions fuel for powering homes and cars and to heat homes." [tgdaily.com...]
I hope this isn't another cold fusion [en.wikipedia.org] story.
Through theoretical computations, they've demonstrated that an alloy formed by a two percent substitution of antimony in gallium nitride has the right electrical properties to enable solar light energy to split water molecules into hydrogen and oxygen, a process known as photoelectrochemical (PEC) water splitting.
1. The oceans are full of water.
2. The byproduct of using hydrogen in an internal combustion engine is H2O.