The team developed a way to safely store ammonia in solid form, thereby making it possible for drivers to use the volatile chemical in diesel vehicles to reduce NOx pollution or as an environmentally friendly alternative to fossil fuels. Integrated in a complete system, the cartridges of AdAmmine release ammonia to be mixed with diesel exhaust gases such that the NOx is reduced to harmless water vapor and nitrogen (which already make up ca 78% of the atmosphere). It can also be used as an indirect source of hydrogen for use in modified diesel engines or in electric fuel cells.