The application of ionic liquids revealed a new dimension in many fields of chemistry. In the particular field of hydrogen storage
system ionic liquids find application in several different ways. After a short introduction about the matter of hydrogen storage and its
advantages and challenges, the different approaches of ionic liquid application in this field are presented. The different approaches can be
classified into the application of ionic liquids as (i) solvent, as (ii) co-catalyst, as (iii) catalyst, as (iv) hydrogen storage material and as (v)
stabilizing agent for nano particles. The benefit of ionic liquids for the system is discussed in this review.
Keywords: Ionic liquids, Hydrogen storage, Ammonia borane, Formic acid, Dehydrogenation, Catalysis
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