Borohydride based Ionic Liquids as novel Hydrogen Storage

摘要

Borohydride based hydrogen storage systems, especially sodium borohydride NaBH4, are well known and intensively investigated in the past decades. Research for on-board vehicular storage stopped after the U.S. DoE recommended a no-go for NaBH4 due to major limitations of this system, e.g. low hydrogen storage density, the weak long-term stability and the missing recycling processes [1]. In this presentation new borohydride based ionic liquids that overcome the major drawbacks of NaBH4 are developed. These new compounds show higher gravimetric and volumetric storage density and enhanced long-term stability [2,3]. The hydrogen release by catalytic hydrolysis with non-noble metal catalysts is determined by a real-time and selective electrochemical hydrogen quantification method [4]. The benefits of this storage technology are presented together with latest experimental results concerning hydrogen storage capacity and system design.