Faraday Discussion 151 This volume focuses on the synthesis, characterisation and application of novel hydrogen storage materials. Wider issues including synthetic routes, characterisation, materials properties and the importance of theory and experiment are also highlighted. Hydrogen is widely billed as the fuel of the future. For this to be a reality there is a pressing need for a safe, economic and reliable way to transport hydrogen, particularly for automotive applications. This has prompted a world-wide effort to develop novel materials that are re-usable and capable of storing and releasing significant (>6 wt%) quantities of hydrogen. In addition to compressed (either liquid or gaseous) hydrogen, two main themes are being explored: adsorption of hydrogen by materials and ""chemical hydrogen"" where hydrogen is reacted with a material. In this volume the topics covered include: Application of theory and spectroscopic methods to understand hydrogenation/dehydrogenation mechanisms Novel approaches such as catalysed hydrogenation/dehydrogenation of organic molecules, encapsulation of nanosized materials in carbon or polymers Chemical hydrogen: characterisation and properties of main group and transition metal borohydrides and alanates, ternary and quaternary metal hydrides, reactive hydride composites Adsorbed/physisorbed hydrogen on or in MOFs, promoted carbons and other materials with large internal or external surface area Applications including uses for automotives and novel battery materials