Patent ID: 8673436
Filing Date: 2014-03-18
Classification: C01B,C23C,H01M,Y02E,Y10T

Abstract:
1. A solid-state hydrogen storage medium, comprising: hydride particles selected from the group of alkali metal aluminum hydrides or alkali metal borohydrides doped with a metal catalyst and including an alternate material wherein said metal catalyst facilitates the growth of said alternate material and comprises a rare earth metal; and said alternate material comprising multi-wall carbon nanotubes and/or single-wall carbon nanotubes, wherein said alternate material is supported by the particles and said alternate material is capable of solid-state hydrogen uptake and release, and having a limiting gravimetric storage capacity of 0.5 wt. % to 2.5 wt. % at room temperature and 5.0 wt. % at 77 K; wherein said particles have a thickness (t) of less than or equal to about 100 nm, a lateral dimension (LD) of greater than 1000 nm and an aspect ratio (LD/t)>10.0, wherein said particles are present with a free surface area (SA wherein said particles when in said storage medium remove heat during exothermic hydrogen absorption where said hydrogen absorption proceeds from molecular hydrogen absorbing at a surface of said particles followed by atomic hydrogen diffusing into said particles.