Enhanced hydrogen storage capacity and reversibility of LiBH4 encapsulated in carbon nanocages

Single-walled carbon nanotubes/lithium borohydride composites for hydrogen storage: role of in situ formed LiB(OH)4, Li2CO3 and LiBO2 by oxidation and nitrogen annealing

“…The presence of Li + , positively charged B atoms and highly electronegative O atoms from LiBO 2 signicantly enhances the dehydrogenation and rehydrogenation of the composite. 50 The hydrogen storage capacity of lithium borohydride with different carbon additives such as fullerene (C 60 ), MWCNTs, SWCNTs, graphene and activated charcoal are compared with that of the present work is given in Table 2. Over all, from this study, it is inferred that, the formation of hydroxide, carbonate or borate groups on the SWCNT-LiBH 4 surface and the nano connement of SWCNT in the host matrix aids the prevention of boron and lithium losses during dehydrogenation and decomposition of LiBH 4 .…”

Catalytic Tuning of Sorption Kinetics of Lightweight Hydrides: A Review of the Materials and Mechanism

“…It was suggested that increased curvature of carbon structure reduces the hydrogen removal energy [258]. Various forms of carbon have been employed to improve the kinetics and lower the desorption temperature [259][260][261][262][263][264][265]. Yu et al [259] prepared a mixture of LiBH 4 and carbon nanotube mixture by ball milling and showed a lower onset temperature, i.e., 250 • C, of hydrogen desorption.…”

“…The activation energy was also found to be reduced down to 131 kJ/mol H 2 from 182 kJ/mol H 2 for pure LiBH 4 . Another approach to reduce the activation energy of borohydrides is their nanocaging into carbon scaffold [265]. The onset desorption temperature for nano-caged LiBH 4 was found 180 • C lower than that of pure LiBH 4 with a reduced activation energy of 113 kJ/mol H 2 .…”

Enhanced Low-Temperature Hydrogen Storage in Nanoporous Ni-Based Alloy Supported LiBH4

“…However, the elevated dehydrogenation temperature, complicated dehydrogenation behavior and poor reversibility limit its practical applications (Züttel et al, 2003;Orimo et al, 2005;Mauron et al, 2008;. In order to overcome these deficiencies, the strategies of constructing reactive hydride system (Liu D. M. et al, 2013;Liu et al, 2015Liu et al, , 2016Ding et al, 2019), cation/anion substitution (Yin et al, 2008;Fang et al, 2011), adding catalyst (Zhang et al, 2017;Cai et al, 2018) and nanoconfinement (Guo et al, 2017;Xu et al, 2017;Meng et al, 2018) were developed in the last decade.…”