The lithium-titanate battery is a type of rechargeable battery which has the advantage of being faster to charge than other lithium-ion batteries.
A lithium-titanate battery is a modified lithium-ion battery that uses lithium-titanate nanocrystals, instead of carbon, on the surface of its anode. This gives the anode a surface area of about 100 square meters per gram, compared with 3 square meters per gram for carbon, allowing electrons to enter and leave the anode quickly. This makes fast recharging possible and provides high currents when needed. Lithium-titanate cells also last for 3000 to 7000 charge cycles; one source claims a cycle life of ~1000 cycles before reaching 80% capacity when charged and discharged at 55 °C (131 °F), rather than the standard 25 °C (77 °F).
A disadvantage of lithium-titanate batteries is that they have a lower inherent voltage (2.4 V), which leads to a lower specific energy (about 30–110 Wh/kg) than conventional lithium-ion battery technologies, which have an inherent voltage of 3.7 V, although some lithium-titanate batteries are reported to have an energy density of up to 177 Wh/L.
Due to their high level of safety, lithium-titanate batteries are used in mobile medical devices.
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