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Title: Flexible All Solid State Lithium Batteries Made by Roll-to-Roll Freeze-Casting

Abstract

This project was directed towards understanding scalability and manufacturing issues associated with a novel fabrication method for solid-state lithium batteries initially proposed by Contractor 1 (LBNL). This is based on freeze tape casting (FTC) of Al-substituted Li7La3Zr2O12 (LLZO) to form a porous ion-conducting scaffold, followed by infiltration with cathode active material and other components. The composite electrodes fabricated by this method can then be combined with thin dense layers of LLZO and a lithium foil to complete a solid-state cell. Contractor 1’s duties were to determine the best conditions for freeze tape casting of LLZO, and communicate these to Contractor 2 (ORNL) so that they could scale-up the process. Scale-up issues were identified with the first formulation provided to ORNL, but were resolved with the second formulation, and scaffolds were successfully produced at ORNL. Early in the project, hybrid cells were assembled at ORNL using components produced at Fisker (Participant) and could be cycled, although cycle lives were short, probably due to problems associated with the use of liquid electrolyte. The ultimate goal of the project was to produce a functioning completely solid-state cell, which was accomplished at the end of the project, by Contractor 1.

Authors:
ORCiD logo [1]
  1. Univ. of California, Berkeley, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Publication Date:
Research Org.:
Univ. of California, Berkeley, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Fisker, Inc., Los Angeles, CA (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1569485
Report Number(s):
LBNL-2001224; LBNL-AWD-00003157
LBNL-2001224; AWD00003157
DOE Contract Number:  
AC02-05CH11231
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Doeff, Marca. Flexible All Solid State Lithium Batteries Made by Roll-to-Roll Freeze-Casting. United States: N. p., 2019. Web. doi:10.2172/1569485.
Doeff, Marca. Flexible All Solid State Lithium Batteries Made by Roll-to-Roll Freeze-Casting. United States. https://doi.org/10.2172/1569485
Doeff, Marca. 2019. "Flexible All Solid State Lithium Batteries Made by Roll-to-Roll Freeze-Casting". United States. https://doi.org/10.2172/1569485. https://www.osti.gov/servlets/purl/1569485.
@article{osti_1569485,
title = {Flexible All Solid State Lithium Batteries Made by Roll-to-Roll Freeze-Casting},
author = {Doeff, Marca},
abstractNote = {This project was directed towards understanding scalability and manufacturing issues associated with a novel fabrication method for solid-state lithium batteries initially proposed by Contractor 1 (LBNL). This is based on freeze tape casting (FTC) of Al-substituted Li7La3Zr2O12 (LLZO) to form a porous ion-conducting scaffold, followed by infiltration with cathode active material and other components. The composite electrodes fabricated by this method can then be combined with thin dense layers of LLZO and a lithium foil to complete a solid-state cell. Contractor 1’s duties were to determine the best conditions for freeze tape casting of LLZO, and communicate these to Contractor 2 (ORNL) so that they could scale-up the process. Scale-up issues were identified with the first formulation provided to ORNL, but were resolved with the second formulation, and scaffolds were successfully produced at ORNL. Early in the project, hybrid cells were assembled at ORNL using components produced at Fisker (Participant) and could be cycled, although cycle lives were short, probably due to problems associated with the use of liquid electrolyte. The ultimate goal of the project was to produce a functioning completely solid-state cell, which was accomplished at the end of the project, by Contractor 1.},
doi = {10.2172/1569485},
url = {https://www.osti.gov/biblio/1569485}, journal = {},
number = ,
volume = ,
place = {United States},
year = {2019},
month = {7}
}