I have three questions I need help with! Please explain your answers I am trying
ID: 838872 • Letter: I
Question
I have three questions I need help with! Please explain your answers I am trying to learn. Thanks very much!
1. Will the lithium cobalt electrode expand or contract as lithium ions are inserted? Will the lithium cobalt electrode expand or contract as lithium ions are inserted?
A)The lithium cobalt electrode will expand.
B)The lithium cobalt electrode will contract.
2.Lithium is not nearly as abundant as sodium. If sodium ion batteries were developed that function as lithium ion ones, do you think "sodium cobalt oxide" would still work as the electrode material?
A)Explanation / Answer
1) A)The lithium cobalt electrode will expand.
The electrodes of Lithium cells expand charging due to the effect of the intercalation of the Lithium ions into and out of the crystal structure of the electrodes.
2) B) Sodium cobalt oxide will probably work as an electrode material, because Na+ ions are much smaller than Li+ ions.
3) D) Cobalt will work as the redox-active partner ion in the sodium version of the electrode