Ammonia Molecule (IMAGE) SolarPACES Caption Ammonia (NH3) actually packs in more hydrogen than hydrogen (H2), making it the ideal hydrogen carrier, says Australian solar fuels expert. Credit Science Direct Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.