Critical current density in hot-pressed garnet Li7La3Zr2O12 solid state electrolytes

Author

Jinzhao Guo, Washington University in St. LouisFollow

Date of Award

Spring 1-15-2019

Author's Department

Mechanical Engineering & Materials Science

Degree Name

Master of Science (MS)

Degree Type

Thesis

Abstract

In lithium ion batteries, replacing graphite anode with lithium metal is one of the most promising ways to increase energy density. To avoid dendrite problems caused by lithium metal anode, many kinds of solid state electrolytes are reported. Garnet Li₇La₃Zr₂O₁₂ has high chemical and electrochemical stability with lithium metal, its shear moduli is also higher than most membrane materials, so it is one of the most promising solid state electrolyte materials. However, there are still dendrites penetrating under a small current density in Li₇La₃Zr₂O₁₂. This thesis is aiming to find possible controlling factors of critical current density.

Language

English (en)

Chair

Peng Bai

Committee Members

Shanker Sastry Katharine Flores

Comments

Permanent URL: https://doi.org/7936/fj3m-qw23