Lithium hydride (LiH) is the compound of lithium and hydrogen. It is a colourless crystalline solid, although commercial samples appear gray. Characteristic of a salt-like, or ionic, hydride, it has a high melting point of 689 °C (1272 °F). Its density is 780 kilograms per cubic metre. It has a standard heat capacity of 29.73 J/mol*k with thermal conductivity that varies with composition and pressure (from at least 10 to 5 W/m*K at 400 K) and decreases with temperature.
It is a flammable solid and very reactive with water, producing the corrosive compound lithium hydroxide as well as hydrogen.
The corresponding lithium deuteride, formula LiD, is the fusion fuel in thermonuclear weapons. In warheads of the Teller-Ulam design, LiD is compressed and heated by the explosion of the fission primary to the point where fusion occurs. Lithium deuteride, unlike tritium, is non-radioactive.
Can also be used as a storage vessel for use in hydrogen vehicles.
US Patent Issued to Toyota Jidosha, Hiroshima University on Sept. 27 for "Activation Method for Lithium Hydride, and Hydrogen Generation Method" (Japanese Inventors)
Oct 04, 2011; ALEXANDRIA, Va., Oct. 4 -- United States Patent no. 8,026,001, issued on Sept. 27, was assigned to Toyota Jidosha K. K....