Patent ID: 9728776
Date: 2017-08-08
CPC Classifications: H01G,H01M,Y02E

Claim:
1. A lithium ion device comprising: an anode having an active material comprising germanium nano-particles having a particle size of 20 to 100 nm, boron carbide nano-particles having a particle size of 20 to 100 nm and tungsten carbide nano-particles having a particle size of 20 to 60 nm, wherein the weight percentage of the germanium is between 5 to 80 weight % of the total weight of the anode, the weight percentage of boron in the anode is between 2 to 20 weight % of the total weight of the anode and the weight percentage of tungsten in the anode is between 5 to 20 weight % of the total weight of the anode; a cathode; and an electrolyte.