Metal ammine complexes for hydrogen storage

Claus H. Christensen, Rasmus Zink Sørensen, Tue Johannessen, Ulrich Quaade, Johanna Karoliina Honkala, Tobias Dokkedal Elmøe, Rikke Køhler, Jens Kehlet Nørskov

Research output: Contribution to journalJournal articleResearchpeer-review


The hopes of using hydrogen as an energy carrier are severely dampened by the fact that there is still no safe, high-density method available for storing hydrogen. We investigate the possibility of using metal ammine complexes as a solid form of hydrogen storage. Using Mg(NH3)(6)Cl-2 as the example, we show that it can store 9.1% hydrogen by weight in the form of ammonia. The storage is completely reversible, and by combining it with an ammonia decomposition catalyst, hydrogen can be delivered at temperatures below 620 K.
Original languageEnglish
JournalJournal of Materials Chemistry
Issue number38
Pages (from-to)4106-4108
Publication statusPublished - 2005


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