Graphite carbon negative electrode series, carbon negative
electrode, potential and lithium standard potential is very close,
battery overcharge, Metal Lithium May in carbon negative electrode
surface precipitation and formed Lithium Dendrite, Short circuit
and other safety problems.
The graphite carbon anode series formed SEI (solid electrolyte,
plasma membrane) at the interface of electrolyte when it was
working, and the Sei film had poor high temperature stability.
However, lithium titanate materials do not form Sei film in the
traditional sense, so the stability is better.
3. Wide Voltage(-50℃ ~ +60℃)
High Lithium Ion diffusivity makes lithium titanate charge and
discharge normally at low temperature, and high temperature
stability, which makes lithium titanate safe and safe at high
temperature.
The lithium titanate battery can be fully charged and discharged in
a wide temperature range of-50 °C ~ + 60 °C. Batteries in other
lithium-ion chemical systems can hardly be charged at temperatures
below zero.
4. Longer Lifespan(Lifecycles≥25000 times)
The structure of Lithium titanate is spinel. The lattice parameter
of Lithium titanate increases from 0.836 to 0.837 ΜM (1 nm 10 ΜM) ,
the volume change is only 0.3% , and the structure of lithium
titanate has little change Good cycle stability.
In the process of charging and discharging of graphite materials,
the volume change rate is 10% , long-term circulation, graphite
pulverization, leading to the deterioration of cycle life.