20 articles
Alane
Alane (aluminum hydride, AlH3) is a metastable hydride of aluminum first synthesized in 1947, one of the densest hydrogen storage materials known and a solid rocket propellant additive.
Aluminium hydride
Aluminium hydride, also called alane, is a covalently bonded metal hydride that stores 10.1 wt% hydrogen and releases it rapidly at low temperature, making it a candidate storage material.
Ammonia decomposition
Ammonia cracking is the catalytic decomposition of ammonia into nitrogen and hydrogen, used to recover hydrogen from ammonia that has been stored or shipped as a hydrogen carrier.
Calcium hydride
Calcium hydride (CaH₂) is a gray, odorless saline hydride that reacts vigorously with water to release hydrogen, making it a laboratory drying agent and hydrogen storage candidate.
Catalytic dehydrogenation of LOHC
Catalytic dehydrogenation of liquid organic hydrogen carriers (LOHCs) is the endothermic, catalyst-driven step that releases hydrogen from the loaded carrier so it can be reloaded and reused.
CO2 hydrogenation to formic acid
CO2 hydrogenation to formic acid is the catalytic reaction combining carbon dioxide and hydrogen to make formic acid, studied as a liquid, carbon-neutral hydrogen storage method.
Decalin
Decalin, also known as decahydronaphthalene, is a bicyclic cycloalkane of two fused cyclohexane rings, used as a solvent, a high-cetane diesel component, and a hydrogen carrier.
Destabilized hydride systems
Destabilized hydride systems are mixtures of two or more metal hydrides that release hydrogen at lower temperatures because dehydrogenation forms a stable compound, such as MgB₂ in the LiBH₄–MgH₂ system.
Dibenzyltoluene
Dibenzyltoluene (DBT) is an aromatic hydrocarbon mixture used as a liquid organic hydrogen carrier, storing 6.2 wt% hydrogen that a catalyst releases at about 300 °C.
Formic acid decomposition for hydrogen release
Formic acid decomposition for hydrogen release is the catalytic splitting of formic acid into hydrogen and carbon dioxide, using the acid as a liquid hydrogen carrier.
Hydrogen storage alloy
A hydrogen storage alloy is an intermetallic compound or alloy that reversibly absorbs hydrogen gas as a metal hydride, used in Ni–MH batteries and stationary storage.
Liquid organic hydrogen carriers
Liquid organic hydrogen carriers (LOHCs) are organic liquids that store hydrogen by reversible catalytic bonding, allowing transport at ambient temperature and pressure using existing fuel infrastructure.
Low-temperature ammonia decomposition catalysts
Low-temperature ammonia decomposition catalysts are materials that split ammonia into hydrogen and nitrogen below about 450 °C for on-site hydrogen generation, with ruthenium the most active metal and nickel the leading cheaper alternative.
Magnesium hydride
Magnesium hydride (MgH₂) is a white solid compound of magnesium and hydrogen, first synthesized in 1951, with a high 7.6 wt% hydrogen capacity but slow kinetics.
Metal–organic framework hydrogen storage
Metal–organic framework hydrogen storage stores hydrogen by physisorption inside metal–organic frameworks, porous crystalline materials with tunable pores and exceptionally high surface areas studied intensively as adsorbents since 2003.
Methylcyclohexane
Methylcyclohexane, also called hexahydrotoluene, is a cycloalkane produced by hydrogenating toluene; it stores hydrogen for shipment in ordinary fuel infrastructure and released 210 tons delivered from Brunei to Japan in 2020.
N-ethylcarbazole
N-ethylcarbazole is a nitrogen heterocyclic compound used as a liquid organic hydrogen carrier whose hydrogenated form stores 5.8 wt% hydrogen, releasable at 180–225 °C, well below hydrocarbon carriers.
Palladium hydride
Palladium hydride is a non-stoichiometric compound formed when palladium metal absorbs hydrogen into its face-centered cubic lattice, with a hydrogen-to-palladium ratio varying continuously with pressure and temperature.
Sodium aluminium hydride
Sodium aluminum hydride, also called sodium alanate, is a complex metal hydride whose reversible hydrogen release after titanium doping made it widely studied for hydrogen storage.
Titanium iron alloy
Titanium iron alloy (TiFe) is an equiatomic intermetallic compound of titanium and iron that reversibly absorbs hydrogen near room temperature, first reported at Brookhaven National Laboratory in 1974.