"lithium ion" is correct and usable in written English.
It is typically used to refer to a type of rechargeable battery. For example, "The device is powered by a lithium ion battery."
On the grid, lithium ion experiments are already underway.
Long-lasting lithium ion batteries still don't exist.
There is a lower fire risk than lithium ion batteries.
The weight includes rechargeable lithium ion batteries that last about eight hours between charges.
The cars are powered by a modest 20-30kW electric motor from a lithium ion battery.
The rechargeable lithium ion battery that runs the printer will last for about 15 shots.
For the lithium-ion version, it is manganese dioxide spiked with lithium ions.
When the battery is charged, lithium ions on the cathode migrate to the anode.
This is to allow the lithium ions free passage.
The power source is a built-in lithium ion-battery.
In a typical lithium-ion battery, the negative electrode stores lithium ions in honeycomb-like lattices.
