1
\$\begingroup\$

A startup called CalBattery is touting that their silicon-graphene anodes for li-ion batteries "will improve the anode specific capacity performance of lithium battery anodes by a factor of 3X."

Will a 3X improvement in anode performance translate into a 3X improvement in energy density of the overall battery, or not? (In other words, is battery energy density anode-limited?)

\$\endgroup\$
  • 1
    \$\begingroup\$ oh i went to a seminar on this but i cant remember which! \$\endgroup\$ – geometrikal Oct 31 '12 at 8:54
5
\$\begingroup\$

No, energy density of a battery is not anode-limited. Yes, there will be improvement, but not a 3X energy density increase.

\$\endgroup\$
  • \$\begingroup\$ Thanks! Ballpark, what would you guess the energy density increase would be? And what resources would you suggest I use to figure out what the increase would be? \$\endgroup\$ – AlcubierreDrive Oct 31 '12 at 12:00
  • 1
    \$\begingroup\$ Battery design is a pretty involved black art, and my own knowledge is peripheral at best. Hnece not really qualified to "guess" at the energy density increase. What I can say for certain, though, is that the increase would vary across battery sizes, electrode dimensions, and temperature... and probably a whole bunch of other factors. \$\endgroup\$ – Anindo Ghosh Oct 31 '12 at 15:08

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.