Battery chemistry: Lithium v Sodium v Iron

What makes lithium ion batteries so great? Why other chemistries have a harder time.
Correction: at 2:08 the energy estimate should have been 99 Wh not 109 Wh

Explanation:
3.7 v * 1 electron * 6.02e23 electrons per mole = 16.2e23 electron-volts
there are 4.45049×10^-23 Wh (watt hours) per electron volt
99.1 Wh
We got 99.1 Wh per 6.9 g
so
14.4 W-H/g

https://www.wolframalpha.com/input/?i=(3.7+*+6.02e23)+eV+in+watt-hours

Allen Lab Vlog #264 6/3/2018

Видео Battery chemistry: Lithium v Sodium v Iron канала Peter Allen