Modified metal hydrides for high-capacity thermal energy storage Conference Paper uri icon

abstract

  • The development of novel and efficient thermal energy storage (TES) materials is a major challenge in addressing needs in a variety of applications, from intermittent solar energy harvesting to thermal management of transient, high-flux heat loads. Metal hydrides such as MgH 2 and LiAlH 4 are potential TES materials that possess extraordinarily high inherent thermal energy densities of up to 2MJ/kg. However, their high desorption temperatures at atmospheric pressure and sluggish kinetics represent significant challenges to the use of these materials for TES. In order to improve the dehydrogenation properties of hydrides, we have studied the modification of MgH 2 and LiAlH 4 using high-energy solid-state ball milling with different catalytic additives, resulting in nanoscale features. Improved kinetics and downshifts in the decomposition temperatures have been observed for MgH 2 and LiAlH 4 samples mechanical doped with selected Ni-based and Ti-based catalysts, respectively.

published proceedings

  • International SAMPE Technical Conference

author list (cited authors)

  • Amama, P. B., Shamberger, P. J., & Fisher, T. S

complete list of authors

  • Amama, PB||Shamberger, PJ||Fisher, TS

publication date

  • July 2012