Dear Waseem Shehzad thank you for asking this interesting technical question on RG. It would certainly be helpful if you were a bit more specific, as capacity could mean heat capacity, production capacity, battery capacity etc. I assume that you mean battery capacity, right?
For a good overview of this topic please have a look at the following review article:
Li-ion battery materials: present and future
Article Li ion Battery Materials: Present and Future
This instructive paper has been posted by the authors as public full text on RG, so that you can freely download it as pdf file.
Also please see the following potentially useful link:
Researchers eye manganese as key to safer, cheaper lithium-ion batteries
Thanks alot Frank T. Edelmann, i really mean specific capacity used in energy storage devices like supercapatory, supercapacitors which can be calculated from CV, GCD curves. Your answer really help me.