ACTIVATED CARBON POWDERS FOR HYBRID SUPERCAPACITOR-BATTERY SYSTEMS

摘要

Activated carbon powders for hybrid supercapacitor-battery systems may be formed from a corncob or an egg white. In an example of a method for making an example of the activated carbon powder, a corncob is dried and ground to form a precursor powder. The precursor powder is heat treated under an inert gas flow until a predetermined temperature is reached. While the predetermined temperature is maintained, the inert gas flow is replaced with an ammonia gas (NH3) flow. With this method, a nitrogen-doped activated carbon powder is formed.