This from Powder Metallurgy Review:
GKN Powder Metallurgy and McPhy Energy SA have announced a technology partnership agreement to accelerate the deployment of cost competitive solid state hydrogen storage.
Industrial markets already consume large volumes of hydrogen and in future the gas will play an important role in storing renewable energy as well as in CO2 free hydrogen fuel cell vehicle development. Solid state storage is stated as being a safe way to store large quantities of gas with high density at low pressure.
PS: ECS has a technical division that will interest you.