Advanced Chemical Hydrides For Hydrogen Storage

摘要

There is great interest in transitioning from an energy economy based upon hydrocarbons to an energy economy using hydrogen as an energy carrier. Fuel cell powered vehicles are crucial for this transition. For fuel cell vehicles to succeed, there needs to be breakthroughs in novel materials and approaches to store hydrogen on-board. The U.S. Department of Energy (DOE) has established performance targets for hydrogen storage system which include: a gravimetric (90 gm H2/kg) and volumetric (82 gm H2/liter) density of hydrogen sufficient to provide the 5-10 kg H2 required ‘on-board' to obtain the mileage goals. This challenge resulted in resurgent interest in the properties of various storage materials such as metal hydrides, sorbents and chemical hydrides. PNNL has been actively involved in DOE's Hydrogen Fuel Initiative (HFI) and the International Partnership for the Hydrogen Economy (IPHE) to develop chemical hydrides to meet the DOE's targets. (4-41)