Portable Hydrogen Storage Based on New Chemistry of Sodium Borohydride

Abstract

To overcome the problems of a current hydrogen storage technology, EnerFuel has invented a novel hydrogen system which produces hydrogen through a non water based chemical reaction of sodium borohydride. Based on the new chemistry, a portable hydrogen storage and generator device has 7.03 kWh total hydrogen content and can supply hydrogen at the rates required by 1 -60 W fuel cells. However, the simple system design allows for easy scaling up or down hydrogen content and flow rates to accommodate the hydrogen consumption. This specific storage is currently used to power a remote surveillance system, an EnerFuel product that demonstrates all the benefits of a hydrogen fuel cell technology. The storage operates at low pressure and in a wide temperature range from less than 0° to 80°C. A new storage is a safe and reliable supply of hydrogen where hydrogen is generated and present only when required by fuel cell. As a result of the advanced system design, it was possible to achieve high hydrogen storage capabilities: volumetric capacity 40.8 g/L, and gravimetric capacity 35.2 g/kg.