Molecular-salt hybrids; integration of ammonia borane into lithium halides

New molecular-salt-like hybrids contain ammonia borane (AB) in co-existence with lithium halides in single lattices. [LiI](NH 3 BH 3 ) and [LiI](NH 3 BH 3 ) 2 are members of a generic [LiX] m (AB) n (X = I − , BH 4 − ; m , n = integer) materials family which release hydrogen on decomposition and demonstrate Li + -ion conductivity more than two orders of magnitude higher than either LiBH 4 or LiI. New hybrids release hydrogen on decomposition and demonstrate Li-ion conductivity >100 times higher than the component salts.