Israel’s Nitrofix (see here previously) has developed a zero-carbon, green electricity, zero hydrogen, method for producing ammonia for use as a green fuel. Nitrofix uses an organic metal catalyst to help combine nitrogen from the air with water. The only by-product is oxygen.
https://www.israel21c.org/ammonia-could-be-the-next-big-thing-in-carbon-free-fuel/
https://www.youtube.com/watch?v=630S_ulOAzE https://www.yedarnd.com/nitrofix