| About this Abstract |
| Meeting |
MS&T21: Materials Science & Technology
|
| Symposium
|
Energy Materials for Sustainable Development
|
| Presentation Title |
The Role of Lithium Site Occupancy on Lithium-Ion Conductivity of Tantalum-Doped Lithium Lanthanum Zirconium Oxide Garnet |
| Author(s) |
Jeffrey W. Fergus, Xingxing Zhang |
| On-Site Speaker (Planned) |
Jeffrey W. Fergus |
| Abstract Scope |
The lithium lanthanum zirconium oxide (LLZO) cubic garnet phase is a promising electrolyte for solid state lithium batteries due to its high lithium-ion conductivity and stability with lithium metal. In this work, tantalum-doped LLZO was synthesized by co-precipitation and sintering in a lithium-rich air environment at atmospheric pressure. The resulting materials were more than 90% dense and had lithium ion conductivities of around 4 x 10-4 S/cm. The lithium conductivity is affected by the lithium content and the distribution of the lithium between the tetrahedral and octahedral sites in the garnet phase. This relationship will be discussed in this presentation. |