Ampcera® Ta-LLZO Garnet Ceramic Membrane Solid Electrolyte, LLZTO, 0.7mm thick, 14mm diameter

• Product Name: Ampcera® Solid Electrolyte Ta-LLZO Garnet Ceramic Membrane
• Vendor: Ampcera Inc.
• SKU#: ME0111
• Composition: Li_6.4La₃Zr_1.4Ta_0.6O₁₂ (Ta-doped LLZO), Tantalum doped Lithium Lanthanum Zirconate Garnet, LLZTO, cubic phase
• Disk Size: 14 mm diameter x 0.7 mm thickness (diameter size +/- 1mm, typical value 13.5mm)
• Grain Size: D50 < 10 um
• Relative Density: ~97%, high density and low porosity inhibits lithium dendrite growth and penetration
• Phase: cubic phase, garnet structure
• Flexural strength: ~120 MPa
• Sintering Temperature: 1200 ~ 1300 °C
• Bulk Ionic Conductivity: up to 4 ~ 10 x 10^-4 S/cm (0.4 ~ 1.0 mS/cm) at room temperature
• Product Form: Ceramic disk (ceramic membrane)
• Package: each sintered LLZO ceramic membrane is packaged using a patent-pending method to prevent the product from exposure to air and moisture.

In order to measure the ionic conductivity of the LLZO sample, you may consider coating LLZO with silver as Li-ion blocking electrodes by magnetron sputtering. Some other researchers have tried to use silver paste.

Applications: Solid state electrolyte material for all solid state lithium ion batteries. Tantalum doped LLZO, with nominal composition Li_6.4La₃Zr_1.4Ta_0.6O₁₂ (Ta-doped LLZO), is used as a solid electrolyte material for Li-based solid state batteries because of its high Lithium ionic conductivity and chemical stability with respect to lithium as well as its stability at elevated temperatures. Because of its better electrochemical stability, LLZO is preferred than LLTO as a solid electrolyte material.

* All solid state electrolyte materials sold by MSE Supplies are under the trademark of Ampcera.

References

• Jeffrey W. Fergus, Ceramic and polymeric solid electrolytes for lithium-ion batteries, Journal of Power Sources, Volume 195, Issue 15, 1 August 2010, Pages 45544569; http://dx.doi.org/10.1016/j.jpowsour.2010.01.076
• Zhi Deng, Yifei Mo and Shyue Ping Ong, Computational studies of solid-state alkali conduction in rechargeable alkali-ion batteries, NPG Asia Materials (2016) 8, e254; doi:10.1038/am.2016.7
• Seungho Yu, Robert D. Schmidt, Regina Garcia-Mendez, Erik Herbert, Nancy J. Dudney, Jeffrey B. Wolfenstine, Jeff Sakamoto, and Donald J. Siegel, Elastic Properties of the Solid Electrolyte Li₇La₃Zr₂O₁₂ (LLZO), Chem. Mater., 2016, 28 (1), pp 197206. DOI: 10.1021/acs.chemmater.5b03854
• Jiajia Tan and Ashutosh Tiwari, Synthesis of Cubic Phase Li₇La₃Zr₂O₁₂ Electrolyte for Solid-State Lithium-Ion Batteries, Electrochem. Solid-State Lett. 2012 volume 15, issue 3, A37-A39. doi: 10.1149/2.003203esl
• X. Han, et. al., Negating interfacial impedance in garnet-based solid-state Li metal batteries, Nature Materials volume 16, pages 572579 (2017)