| If more lithium ions than necessary
are pulled out during charging, the crystalline structure will
collapse because the crystal has a layer structure. As a result,
not only the charging and discharging cycle will be shortened
there will also be a degradation in various properties will
be caused. For this reason, it is required to strictly control
the maximum charging voltage (the number of lithium ions pulled
out). |
The most striking characteristic
of this type is that the crystalline structure does not collapse
owing to the crystalline structure called spinel type even though
100% lithium ions are pulled out. As a result of this, a battery
of this type is resistant to overcharging and provides a high
thermal stability. Furthermore, manganese is a naturally abundant
element and can be stably supplied.
|
