LLZO Garnet-Type Oxide Solid-State Electrolyte (Li₇La₃Zr₂O₁₂)

Name: LLZO Garnet-Type Oxide Solid-State Electrolyte (Li₇La₃Zr₂O₁₂)

Material Form: White powder

Product Code: XN-LLZO

Description:

LLZO (Li₇La₃Zr₂O₁₂) is a garnet-type oxide solid-state electrolyte engineered for next-generation all-solid-state lithium batteries (ASSLBs) and lithium-metal batteries. As an oxide-class electrolyte, LLZO offers unique advantages over sulfide and halide chemistries — air stability, intrinsic compatibility with lithium metal anode, and a wide electrochemical window. With ~2 mS/cm room-temperature ionic conductivity and 99.9% purity, Xnergy’s LLZO powder represents the industry-leading performance level for garnet electrolytes. As a result, this material is the preferred choice for high-energy-density lithium-metal solid-state batteries and safety-critical applications.

Application:

This material serves as a solid electrolyte for all-solid-state lithium batteries and lithium-metal batteries. Especially suitable for lithium-metal anode systems, oxide-cathode-based ASSLBs, garnet-polymer composite electrolyte films, ceramic separator pellet sintering, and academic studies of garnet ion transport. Furthermore, the sub-micron particle size supports composite electrolyte film fabrication and intimate cathode interface contact in composite electrode formulations.

Specifications:

Values measured by Xnergy. Typical values for reference; not guaranteed unless otherwise specified.

Characteristics:

Industry-leading garnet conductivity (~2 mS/cm)

At ~2 mS/cm at 27 °C, this material delivers performance at the upper end of the LLZO garnet family — significantly higher than typical undoped LLZO (0.3–0.5 mS/cm). Moreover, this conductivity is achieved with high phase purity (99.9%), supporting reproducible electrochemical behavior in finished cells.

Air-stable oxide chemistry

Unlike sulfide electrolytes (LPSCl, LGPS), LLZO does not release toxic gases on ambient exposure. Therefore, customers can handle the material in normal laboratory environments with significantly simpler safety requirements than sulfide chemistries.

Intrinsic lithium-metal compatibility

The garnet structure is one of the few solid electrolytes that is thermodynamically stable against lithium metal anode. As a result, LLZO enables the construction of lithium-metal solid-state batteries with theoretical energy densities exceeding 500 Wh/kg.

Sub-micron particle size for composite films

D₅₀ of 400 nm with D₉₀ ≤ 6.5 μm provides high surface area for composite electrolyte film fabrication and intimate cathode interface contact. Consequently, this supports lower interfacial resistance and improved active material utilization in composite cathodes.

Wide electrochemical stability window

Garnet-type LLZO offers a wide stability window, enabling compatibility with high-voltage cathodes (NCM, LCO, high-nickel systems) without LiNbO₃ interface coatings.

Packaging & Storage:

The material ships in sealed bottles. Therefore, customers should store it in a sealed, dry environment, protected from moisture. Reseal promptly after opening. Standard pack sizes: 100 g / 200 g (custom larger quantities available on request).

Safety:

For research and industrial use only. Wear PPE (gloves, masks, safety goggles) when handling powders. Refer to SDS for complete safety information.

Note: Values listed above are typical and for reference only. Performance may vary depending on cell architecture, sintering conditions, cathode selection, and test protocol. Compare with our other lithium-ion solid electrolytes: LPSCl Argyrodite Family up to 10 mS/cm, LGPS (Li₁₀GeP₂S₁₂) at 7 mS/cm, LNOC (LiNbOCl₄) at ~7 mS/cm, LTOC (Li₂TaOCl₅) at 6–8 mS/cm, LZCO (Li₂ZrOCl₄) at 1.55 mS/cm, and LIC (Li₃InCl₆) at 1.4 mS/cm. See also our Oxide Solid Electrolyte Series overview.