Carbon microspheres are doped with boron to enhance the electrical and physical properties of the microspheres. The boron-doped carbon microspheres are formed by a CVD process in which a catalyst, carbon source and boron source are evaporated, heated and deposited onto an inert substrate.
 This invention was made with Government support under Contract No. DE-AC02-06CH11357, awarded by the US Department of Energy, and Contract IL-26-7006-01 05P 08-282 awarded by the Department of Transportation. The Government has certain rights in this invention.