Promising Liquid Organic Hydrogen Carrier: cis-Perhydro-1-(n-phenylethyl)naphthalene with High H2 Capacity and Improved H2 Release Performance through Controlled Diastereomers Compositions

Liquid organic hydrogen carrier (LOHC) technology makesit possibleto safely and easily store and transport hydrogen in large quantitiesfor extended periods of time. To improve the efficiency of hydrogensupply via LOHC, there is a growing need for new LOHCs that exhibithigh hydrogen storage capacity per unit volume and weight, efficienthydrogen release, low melting points for easy transport, and highboiling points for simplifying hydrogen purification, as well as cost-effectiveand large-scale production. Herein, we propose a promising LOHC candidate,1-(n-phenylethyl)naphthalene (PEN), which has a highhydrogen storage capacity (60.8 kgH(2)& BULL;m(-3)), superior physical properties (wide liquid range, from -21to 350 & DEG;C), and mass-produced compounds at low cost. PEN exhibitedreversible hydrogen storage and release performance in consecutivecycles. Furthermore, we suggest an effective way to increase dehydrogenationperformance by controlling the composition of stereoisomers generatedduring hydrogenation. A novel naphthalene-basedLOHC, 1-(n-phenylethyl)naphthalene(PEN), exhibits reversible, high hydrogen storage capacity, superiorphysical properties. and low cost.