The dehydrogenation reaction pathway of a 0.91 (0.62LiBH(4)-0.38NaBH(4))-0.09Ni mixture in the temperature range of 25-650 degrees C in flowing Ar and the cycling stability in H-2 are presented. No H-2 is released immediately after melting at 225 degrees C. The major dehydrogenation occurs above 350 degrees C. Adding nano-sized Ni reduces the dehydrogenation peak temperatures by 20-25 degrees C, leading to three decomposition steps where Ni4B3 and Li1.2Ni2.5B2 are found in the major dehydrogenation products for the 1st and the 3rd step; whilst the Ni-free mixture decomposes through a two-step decomposition pathway. A total of 8.1 wt% of hydrogen release from the 0.91 (0.62LiBH(4)-0.38NaBH(4))-0.09Ni mixture is achieved at 650 degrees C in Ar. This mixture has a poor hydrogen cycling stability as its reversible hydrogen content decreases from 5.1 wt% to 1.1 wt% and 0.6 wt% during three complete desorption-absorption-cycles. However, the addition of nano-sized Ni facilitates the reformation of LiBH4. (C) 2018 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.