CLATHRATE COMPOUNDS AND THEIR PREPARATION AND USE

摘要

A clathrate compound of formula (I): M8AxBy-x (I) wherein: M is an alkaline earth metal, a rare earth metal, an alkali metal, Cd, or a combination thereof, A is Ga, Al, In, Zn or a combination thereof; B is Ge, Si, Sn, Ni or a combination thereof; and 12≦̸x≦̸16, 40≦̸y≦̸43, x and y each is or is not an integer. Embodiments of the invention also include method of making and using the clathrate compound.