Lithium Ion Conducting Solid Electrolyte Lanthanum Lithium Titanate (LLTO)
(Toho Titanium Co., Ltd.)


The LLTO crystal has a perovskite structure and is chemically very stable. In the future, it is expected to be applied to multi-layer solid state batteries and large cells for EVs. Low-temperature sintering and reduced resistance are key points in realizing co-firing with cathode and anode active materials as shown in the figure below. Toho Titanium is developing ways to meet these challenges.

Rechargeable Solid-State Battery

Features of Newly Developed LLTO Products ( La0.57Li0.29TiO3)

  • Realization of low-temperature sintering by nanoparticle formation: Sintering temperature is reduced by nano-particle. formation (60m2/g) .(TMA)
  • Ion conductivity developed in low-temperature-sintered bodies: Higher ionic conductivity (total: 4.0X10-4S/cm) was observed in the sintered bodies at 1,000℃.
Confirmation of low sintering temperature by TMA measurement
Ionic Conductivity of 1,000℃ Sintered Body
(Reference Value) Impedance-measurement by dipping LiCl aqueous solution into filter paper as electrodes

Lineup of LLTO products

  • LLTO Powder (Typical Data)
  • We have a variety of product lineups, including granulation, milling and nano powders.
ItemGranulation (TP-02N)Milling (TP-02F)Nano powder (TP-10F)Nano powder (TP-50F)
Specific Surface Area1.4m2/g2.5m2/g10.4m2/g50.3m2/g
Tap Density1.4g/cm31.5g/cm3
SEM photograph


What are the features of LLTO?

High ionic conductivity and stability in the atmosphere.
LLTO is classified as an oxide solid electrolyte.
Among such electrolytes, it exhibits a relatively high ionic conductivity (bulk) of 10-3 S/cm.
In addition, it is a stable compound and does not react with moisture in the atmosphere.

Can you provide samples?

Yes. Powders and sintered bodies with various specific surface areas are available, so please contact us.

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