Energy Density of Li-ion battery

[PaulTherm]

Hey guys,

 

How can one calculate the energy density of a LiFePO4 battery cell? Is there any way to evaluate this number precisely if one knows the amount of Lithium in each electrode? This number represents the maximum amount of energy that can be used for charging/discharging but also for other chemical reactions inside the cell or is it only the electric energy?

 

I appreciate any answer!

 

Paul

[Lagoon Island Pearls]

I think what you are looking for is the ability to calculate coulombs.

https://en.wikipedia.org/wiki/Coulomb

[DevilSolution]

The rate of discharge will effect the batteries health, so unless you can measure the exact rate of discharge you can only roughly estimate,

 

[math]t = h (\frac{C}{IH})^k [/math]

 

Yeh there is other chemical reactions, namely the ionic charge from anode to cathode and the disintegration of the anode with chemical build up slowly stopping the flow of electrons.

Edited November 21, 2015 by DevilSolution

[MNFsoft]

you can watch this video on youtube @ about 39 minute it explains a lot!