Development and Demonstration of Air Stable rGO‐EC@AB₅ Type Hydrogenated Intermetallic Hybrid for Hydrogen Fuelled Devices

Abstract

Hydrogen is a promising alternative energy vector, but its use at an appropriate site requires storage, which is a crucial aspect. Hydrogen storage (HS) in the form of metal hydrides represents an attractive possibility, and is being investigated worldwide. La(Ni0.95Fe0.05)5 (LNF) has achieved significant attention as a HS media due to its suitable thermodynamics. However, its use as an effective storage material is hindered due to burning of hydrogenated LNF (LNFH) on exposure to air. The pristine LNFH catches fire rapidly on exposure to atmosphere. Here, a breakthrough strategy is demonstrated for design of hydrogenated air‐stabilized hybrid material by encapsulating LNF inside reduced graphene oxide‐ethyl cellulose. This novel hybrid material does not ignite upon exposure to air. This proposed hybrid material could be the ultimate choice for air‐stable and safe storage for fuel cell/internal combustion engine‐based vehicles. Further, the effectiveness of this hydrogen storage material is demonstrated for fuel cells.

Economical synthesis of highly efficient and tunable carbon aerogels for enhanced storage of CO2 emitted from energy sources

“…We then proceeded to evaluate the crucial parameter that is, CO 2 adsorption capacity of three types of CA and the activated version of CA 1000. Figure 7 brings out result of CO 2 adsorption capacity of different types of CA 4,5,15 . It may be noticed that we have significant experience of evaluation of gaseous storage capacity of solids including porous solids.…”

“…Thus, a rapid transition to low carbon energy system by replacing the fossil fuel is an urgent necessity. The quest for replacing the fossil fuels with suitable energy vector like Hydrogen is going on 2‐5 . However in the meanwhile, till this quest becomes reality, we have to find ways to cut down the CO 2 emission 3 .…”

Graphene Supports for Metal Hydride and Energy Storage Applications

“…Most reports, however, focus on Mg-doped porous carbonaceous materials, such as Mg@ G flake nanocomposites (H 2 generation from H 2 O) [36], Mg@graphite for comparison purposes [37], Mg@rGO layers [38,39], Mg@Heteroatom-doped G [40], Mg@B-doped G [41], and Mg/defected GO [42]. Additionally, various alloys have also been studied for graphene supports: Mg alloy @rGO-V 2 O 3 [43], rGO-EC@AB5 hybrid material (EC = ethyl cellulose, AB5 = La(Ni 0.95 Fe 0.05 ) 5 ) (LNF) [44], or MmNi 3.55 Co 0.75 Mn 0.4 Al 0.3 /G nanoplatelets (Mm denotes mischmetals) [45].…”

Impact of Polymers on Magnesium-Based Hydrogen Storage Systems

“…The semi-synthetic cellulose polymer can be derived from natural cellulose such as cotton and wood with further modifications, where the cellulose derivatives are modified with an ether structure (carboxymethyl cellulose sodium, methylcellulose, hydroxypropyl cellulose, hydroxyethyl cellulose and ethyl cellulose) and esters structure (hydroxypropyl methylcellulose phthalate, cellulose acetate phthalate, cellulose acetate butyrate and cellulose acetate) [125,126]. The semi-synthetic polymers cellulose with ether of carboxymethyl cellulose sodium (CMC) has been studied with different kinds of hydrogen storage material for improving the hydrogen sorption performance [127]. The CMC is a non-toxic material, and it processes high viscosity properties.…”