Patent ID: 9564633
Date: 2017-02-07
CPC Classifications: H01M,Y02E

Claim:
1. An electrode for a battery wherein said electrode comprises a type 1 clathrate of silicon at a particle size of 0.1 μm to 100.0 μm having a Si 46 framework cage structure wherein the silicon atoms on said framework are at least partially substituted by carbon atoms, said composition represented by the formula C y Si 46-y with 1≦y≦45, wherein said electrode comprises a metal substrate and said type 1 clathrate particles are present on the surface of said metal substrate, further including one or more guest atoms A within said cage structure, represented by the formula A x C y Si 46-y wherein A=H, Li, K, Na, Rb, Cs, Fr, Be, Mg, Ca, Sr, Ba, Ra, Eu, Cl, Br, or I or any metal or metalloid element and x is the number of said guest atoms within said cage structure and wherein x is greater than zero and has a value such that the cage structure due to the presence of said guest atom undergoes a volume expansion of 0.1% to 50.0% and said volume expansion does not lead to irreversible structural damage to said framework cage structure characterized by a volume contraction in the range of 0.1% to 50.0% upon removal of said guest atom.