Kinetic modification on the hydrogenation properties of KSiH3 using transition metal based catalyst

Abstract

Energy plays important role in our daily life. There is a mismatch between newlinedemand and supply of energy which warrant to store energy efficiently. Presently, newlinethe major part of energy demand is fulfilled by fossil fuels which are conventional newline(non-renewable) energy resources. Although fossil fuels provides cheaper energy newlinethan renewable energy sources, some issues are associated with fossil fuels such as newlinetheir limited availability, causing several environmental consequences such as newlineemission of CO2 and greenhouse gases while burning. Therefore, the renewable newlineenergy resources are the promising contender which fulfil most of the energy newlinerequirements, out of them hydrogen is the most environmentally friendly fuel. newlineHydrogen is clean, sustainable fuel and future energy carrier which has the newlinecapability to replace the current fossil fuel-based energy system. Although hydrogen newlineas a fuel has been extensively regarded as one of the best alternatives, storage of newlinehydrogen in an efficient, safe, and economical method remains an unsolved newlinechallenge for its widespread use. The hydrogen storage in metals in solid form has newlinebeen proposed as efficient method, however, thermodynamic and kinetic issues exist newlinewith this method of storage. Numerous hydrogen storage materials have been newlineexplored but none of them could show adequate performance. Nano confinement newlineand addition of catalysts are the methods, which have been widely verified to be an newlineeffective and efficient tool to relieve the high kinetic barriers and thermodynamic newlinestability of various complex hydrides which have high gravimetric and volumetric newlinehydrogen capacities. This work is based on hydrogen storage in metal hydrides newlineparticularly kinetic improvements in potassium silanide by ball milling with newlinetransition metal-based catalysts. Recently, silanides (MSiH3) have been proposed as newlinepossible hydrogen storage materials due to their interesting hydrogen storage newlineproperties.