High Conductivity of Dense Tetragonal Li7La3Zr2O12

Abstract

Hot-pressing at 1050 C lead to near theoretical density ( 98% relative density) tetragonal LLZO. The total conductivity value for dense tetragonal LLZO is 2.3 10 5 Scm 1. This is the highest reported value for tetragonal LLZO. This vast improvement in total conductivity is a result of the higher density achieved as a result of hot-pressing compared to conventional solid-state sintering. The value of the Li-ion lattice conductivity for dense tetragonal LLZO is 1.1 10 4 Scm 1. The microstructure of dense tetragonal LLZO consist of twins within the grains. It is suggested that the presence of twin boundaries adds a significant contribution to the total resistance.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 2012
Accession Number
ADA578237

Entities

People

  • Ezhiyl Rangasamy
  • Jan L Allen
  • Jeff Wolfenstine
  • Jeffrey Sakamoto

Organizations

  • Michigan State University

Tags

Communities of Interest

  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Boundaries
  • Chemical Engineering
  • Chemistry
  • Conductivity
  • Diffraction
  • Electrical Conductivity
  • Electrical Properties
  • Electron Microscopy
  • Frequency
  • Grain Boundaries
  • Heat Of Activation
  • Hot Pressing
  • Materials
  • Materials Science
  • Military Research
  • X Rays
  • X-Ray Diffraction

Fields of Study

  • Materials science

Readers

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