Electrons are small and mobile but lithium ions are much larger and slower.
They exposed one side of their porous carbon electrode to an electrolyte rich in lithium ions and put a mesh window on the other side of the electrode through which air could be drawn.
Once the lithium ions are free, they move only in and out of the active material, and the inactive material continues to play its stabilizing role.
G.M. in particular is involved in the development of lithium ion batteries to power the next generation of cars.
A battery's electrolyte is the material through which ions (in this case lithium ions) pass from one electrode (the cathode) to another (the anode) inside a battery cell.
The Focus relies on a lithium ion battery pack to silently convey you up to 100 miles.
