Ammonia borane (AB) is a promising chemical hydrogen storage material for H2 powered fuel-cell vehicles (FCVs) owing to its considerable hydrogen density and stability under typical ambient conditions. U.S. Department of Energy (DOE) Technical Targets for on-board hydrogen storage systems in 2015 provide a requirement for operating temperatures in full-sun exposure as high as 60°C (50°C by 2010) [1]. The purpose of this work is to investigate the thermal stability of solid AB during storage on-board a FCV at 40 to 60°C. Calorimeter measurements and calculation models are used to estimate AB thermal stability and H2 release kinetics under isothermal, adiabatic, and cooled storage conditions as a function of storage time, temperature, and AB purity.
Revised: August 19, 2011 |
Published: September 1, 2006
Citation
Rassat S.D., R.S. Smith, C.L. Aardahl, T. Autrey, A.A. Chin, J.W. Magee, and G.R. VanSciver, et al. 2006.Thermal Stability and Hydrogen Release Kinetics of Ammonia Borane Under Vehicle Storage Conditions. In The 232nd American Chemical Society National Meeting, Division of Fuel Chemistry, September 10-14, 2006, San Francisco, California, 51, 517-519. Washington Dc:American Chemical Society.PNNL-SA-50037.