A novel catalyst precursor K2TiF6 with remarkable synergetic effects of K, Ti and F together on reversible hydrogen storage of NaAlH4

A synergetic effect of K, Ti and F together on improving the reversible hydrogen storage properties of NaAlH4 is found by intruding K2TiF6 as catalyst precursor. Around 4.4 wt% of hydrogen can be released from the NaAlH4-0.025 K2TiF6 sample within 40 min at 140 degrees C.