| abstract |
The state of charge of a Li-Ion storage battery comprising a positive electrode active material presenting a constant lithium insertion/extraction potential over most of the capacity operating range and titanium oxide TiO 2 of bronze type structure as negative electrode active material can be easily monitored by simple reading of the operating voltage. The positive electrode active material is selected among LiNi 0.5 Mn 1.5 O 4 and derivatives thereof. |