All-Solid-State Batteries Using Rationally Designed Garnet Electrolyte Frameworks

Publication Type

Journal Article

Date Published

01/2020

Abstract

Functioning bulk-type all-solid-state batteries in a practical form factor with composite positive electrodes, using Al-substituted Li7La3Zr2O12 (LLZO) as the solid electrolyte, have been demonstrated for the first time. The devices incorporate bilayers composed of dense LLZO membranes and porous LLZO scaffolds infiltrated with LiNi0.6Mn0.2Co0.2O2 and other components as positive electrodes, combined with lithium anodes. The porous scaffolds are prepared using an easily scaled freeze-tape-casting method. The unidirectional pores of the scaffold facilitate infiltration of cathode components and shorten lithium ion diffusion path lengths, while the addition of a soft ionically conductive solid to the scaffold ensures good contact among the components.

Journal

ACS Applied Energy Materials

Volume

3

Year of Publication

2020

Short Title

ACS Appl. Energy Mater.

Refereed Designation

Refereed

Pagination

170 - 175

Issue

1

ISSN

2574-0962