Microspheres and their methods of preparation
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.
1. Carbon microspheres having an average diameter of 50 to 700 nm wherein microspheres are doped with boron;
said sphere having pores wherein said pores are 0.6 to 2 nanometers;
wherein a gas is stored in said microsphere.
2. The carbon microspheres claimed in claim 1 wherein the boron to carbon ratio of said microspheres is at least 1:20.
3. The carbon microspheres claimed in claim 2 wherein the boron to carbon ratio of said carbon microspheres is less than 1.5 to 10.
4. The carbon microspheres claimed in claim 3 wherein the boron to carbon ratio of said microspheres is from about 1:4-1:12.
5. The carbon microspheres claimed in claim 1 further comprising nitrogen.
6. The microspheres claimed in claim 1 wherein said gas is H 2 .
7. A separator for an electrolytic cell comprising a support containing the carbon microspheres claimed in claim 1 .