Comparison of hydrogen storage capacity of present work with previously reported works (LiBH₄ composited with various carbon additives).

Storage medium	Experimental conditions		H2 (wt%) and exp. conditions	Description
	Methodology	Atmosphere
LiBH4–C nanocomposite12 with fullerene, C60 as additive	Solvent assisted mixing (THF)	Argon	13.0@530 °C rehydrogenation at 330 °C@100 bar H2 pressure for 5 h	Addition of C60 not only lowers dehydrogenation temperature it enhances reversibility of the composite through C–H bonds
LiBH4–MgH2@pre-milled MWCNTs13	High-energy ball milling	Argon	12.0 wt%	Lowered dehydrogenation temperature due to the catalytic effect of pre-milled MWCNTs
LiBH4@SWCNT27	Ball milling	Argon	13.4 wt%@400 °C	Increased structural defects and decreased nanotube length due to milling decreases dehydrogenation temperature. Nanoconfinement effects plays dominant role in improving dehydrogenation kinetics
LiBH4@MWCNT15	Ball milling	Argon	11 wt%@450 °C
LiBH4/activated charcoal (AC)16	Ball milling	Argon	13.6 wt%@400 °C	Combination of catalytic and nanoconfinement effect resulted in an improved kinetics with lower dehydrogenation temperature and activation energy
LiBH4 catalyzed by graphene17	Ball milling	Argon	11.4 wt%@230 °C rehydrogenation@400 °C under 3 MPa H2 pressure for 10 h	Increased contact area between LiBH4 and graphene decreases dehydrogenation kinetics with low dehydrogenation enthalpy and increased hydrogen release rate
SWCNT@BH3 (ref. 52)	Drop casting (BH3 functionalization through decomposition of the SWCNT@LiBH4 film at 275 °C)	Open atmosphere	1.5 wt% observed under continuous flow of H2 gas (3 L min−1) for 20 min at 50 °C substrate temperature and hold at this temperature for 100 min	The hydrogen absorption is mainly due to carbon
2LiBH4 : MgH2 + 5% Ni (LBMN)51	Ball milling	Argon	—	Different milling time significantly affects the interaction between LiBH4 : MgH2 system and CNT which hinders its dehydrogenation kinetics. An induction time during hydrogen desorption as a result of dispersion of CNTs shows that addition of CNTs has no effect on thermodynamics of this system
2LiBH4 : MgH2 + Ni (95%) + 5% CNT (LBMNT)51	Ball milling	Argon	—
SWLiB-A (SWCNT@LiBH4 treated at 300 °C in air) [PW]	Ultrasonication assisted wet impregnation method	Air	4.0 wt%@150–368 °C hydrogenated@100 °C under 5 bar H2 pressure	Confinement of LiBH4 in nano SWCNT and the formation of H+ and H− through the in situ formed LiB(OH)4, Li2CO3 particles catalyzes the composite thus resulted in improved kinetics
SWLiB-N (SWLiB-A treated at 500 °C in nitrogen) [PW]	Ultrasonication assisted wet impregnation method	Air and nitrogen	4.3 wt%@108–433 °C hydrogenated@100 °C under 5 bar H2 pressure	The presence of positively charged Li, B and highly electronegative O atoms in LiBO2 and the Li2CO3 particles enhances the de/re-hydrogenation of the composites