Preparing Li-garnet electrodes with engineered structures by phase inversion and high shear compaction processes
Abstract
Abstract Solid‐state lithium batteries are promising for safety and energy density compared with traditional lithium‐ion batteries. However, the large interfacial resistance between the electrode and electrolyte is a bottleneck to achieving high‐performance solid‐state batteries. Engineered electrode structures with a porous scaffold of the solid electrolyte material are promising to lower the interfacial resistance and provide a mechanical support for a thin solid electrolyte layer. In this work, two ceramic processing techniques are used to fabricate porous/dense bilayer architectures based on a Li 6.25 Al 0.25 La 3 Zr 2 O 12 (LLZO) Li‐garnet material. Finger‐like vertically aligned pores are created by the phase inversion (PI) process. A water bath presaturated with Li salt prevents Li loss during the PI solvent exchange step. Pore size and porosity can be optimized by adjusting the bath temperature. The high shear compaction process was used to prepare LLZO tapes with 40, 60, and 80 vol% poreformer. The porosity of the tapes after sintering is 39.5%, 58.4%, and 75.4%, respectively. Microtomography exhibits the porosity, pore shape, and pore distribution of the tapes. A typical cathode material LiNi 0.33 Mn 0.33 Co 0.33 O 2 (NMC) is filled into the pores via vacuum infiltration, and a densemore »
- Publication Date:
- Research Org.:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Laboratory Directed Research and Development (LDRD) Program
- OSTI Identifier:
- 1864178
- Alternate Identifier(s):
- OSTI ID: 1810887
- Grant/Contract Number:
- AC02-05CH11231
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of the American Ceramic Society
- Additional Journal Information:
- Journal Volume: 105; Journal Issue: 1; Journal ID: ISSN 0002-7820
- Publisher:
- American Ceramic Society
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 25 ENERGY STORAGE; garnet; infiltration; LLZO; porous scaffold; solid-state battery
Citation Formats
Shen, Fengyu, Jonson, Robert A., Parkinson, Dilworth Y., and Tucker, Michael C. Preparing Li-garnet electrodes with engineered structures by phase inversion and high shear compaction processes. United States: N. p., 2021.
Web. doi:10.1111/jace.18037.
Shen, Fengyu, Jonson, Robert A., Parkinson, Dilworth Y., & Tucker, Michael C. Preparing Li-garnet electrodes with engineered structures by phase inversion and high shear compaction processes. United States. https://doi.org/10.1111/jace.18037
Shen, Fengyu, Jonson, Robert A., Parkinson, Dilworth Y., and Tucker, Michael C. Sat .
"Preparing Li-garnet electrodes with engineered structures by phase inversion and high shear compaction processes". United States. https://doi.org/10.1111/jace.18037. https://www.osti.gov/servlets/purl/1864178.
@article{osti_1864178,
title = {Preparing Li-garnet electrodes with engineered structures by phase inversion and high shear compaction processes},
author = {Shen, Fengyu and Jonson, Robert A. and Parkinson, Dilworth Y. and Tucker, Michael C.},
abstractNote = {Abstract Solid‐state lithium batteries are promising for safety and energy density compared with traditional lithium‐ion batteries. However, the large interfacial resistance between the electrode and electrolyte is a bottleneck to achieving high‐performance solid‐state batteries. Engineered electrode structures with a porous scaffold of the solid electrolyte material are promising to lower the interfacial resistance and provide a mechanical support for a thin solid electrolyte layer. In this work, two ceramic processing techniques are used to fabricate porous/dense bilayer architectures based on a Li 6.25 Al 0.25 La 3 Zr 2 O 12 (LLZO) Li‐garnet material. Finger‐like vertically aligned pores are created by the phase inversion (PI) process. A water bath presaturated with Li salt prevents Li loss during the PI solvent exchange step. Pore size and porosity can be optimized by adjusting the bath temperature. The high shear compaction process was used to prepare LLZO tapes with 40, 60, and 80 vol% poreformer. The porosity of the tapes after sintering is 39.5%, 58.4%, and 75.4%, respectively. Microtomography exhibits the porosity, pore shape, and pore distribution of the tapes. A typical cathode material LiNi 0.33 Mn 0.33 Co 0.33 O 2 (NMC) is filled into the pores via vacuum infiltration, and a dense cathode layer is formed within the garnet scaffold.},
doi = {10.1111/jace.18037},
journal = {Journal of the American Ceramic Society},
number = 1,
volume = 105,
place = {United States},
year = {Sat Jul 17 00:00:00 EDT 2021},
month = {Sat Jul 17 00:00:00 EDT 2021}
}
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