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Title: Cathode Interface Compatibility of Amorphous LiMn2O4 (LMO) and Li7La3Zr2O12 (LLZO) Characterized with Thin-Film Solid-State Electrochemical Cells

Abstract

Solid-state lithium-ion batteries are a hopeful successor to traditional Li-ion cells that use liquid electrolytes. While a growing body of work has characterized the interfaces between various solid electrolytes and the lithium metal, interfaces with common cathode intercalation compounds are comparatively less understood. In this contribution, the influence of polarization and temperature on interfacial stability between LiMn2O4 (LMO) and Li7La3Zr2O12 (LLZO) are investigated. Sputtered thin-film LMO electrodes are utilized to permit high-capacity cycling while retaining a large ratio of interfacial area to electrode bulk. Electrochemical impedance spectroscopy (EIS) is compared across a set of full (LMO|LLZO|Li) and symmetric (LMO|LLZO|LMO, Li|LLZO|Li, and Au|LLZO|Au) cells to delineate impedance features that are specific to the evolution of the cathode interface. Furthermore, additional X-ray photoelectron spectroscopy (XPS) provides evidence of a limited interfacial reaction between LMO and LLZO that coincides with an increase in the impedance of the LMO–LLZO interface.

Authors:
 [1];  [1];  [2]; ORCiD logo [1]
  1. Univ. of Colorado, Boulder, CO (United States)
  2. National Renewable Energy Lab. (NREL), Golden, CO (United States)
Publication Date:
Research Org.:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office; National Science Foundation (NSF)
OSTI Identifier:
1659868
Report Number(s):
NREL/JA-5K00-76250
Journal ID: ISSN 1944-8244; MainId:6927;UUID:d0d4b3a3-3b5b-ea11-9c31-ac162d87dfe5;MainAdminID:13537
Grant/Contract Number:  
AC36-08GO28308; CBET-1806059
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
ACS Applied Materials and Interfaces
Additional Journal Information:
Journal Volume: 12; Journal Issue: 22; Journal ID: ISSN 1944-8244
Publisher:
American Chemical Society (ACS)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; cathodic interface; garnet electrolyte; impedance spectroscopy; liquid electrolytes; lithium-ion battery; manganese spinel; solid interface; solid-state electrolyte

Citation Formats

Delluva, Alexander A., Dudoff, Jessica, Teeter, Glenn, and Holewinski, Adam. Cathode Interface Compatibility of Amorphous LiMn2O4 (LMO) and Li7La3Zr2O12 (LLZO) Characterized with Thin-Film Solid-State Electrochemical Cells. United States: N. p., 2020. Web. doi:10.1021/acsami.0c03519.
Delluva, Alexander A., Dudoff, Jessica, Teeter, Glenn, & Holewinski, Adam. Cathode Interface Compatibility of Amorphous LiMn2O4 (LMO) and Li7La3Zr2O12 (LLZO) Characterized with Thin-Film Solid-State Electrochemical Cells. United States. https://doi.org/10.1021/acsami.0c03519
Delluva, Alexander A., Dudoff, Jessica, Teeter, Glenn, and Holewinski, Adam. 2020. "Cathode Interface Compatibility of Amorphous LiMn2O4 (LMO) and Li7La3Zr2O12 (LLZO) Characterized with Thin-Film Solid-State Electrochemical Cells". United States. https://doi.org/10.1021/acsami.0c03519. https://www.osti.gov/servlets/purl/1659868.
@article{osti_1659868,
title = {Cathode Interface Compatibility of Amorphous LiMn2O4 (LMO) and Li7La3Zr2O12 (LLZO) Characterized with Thin-Film Solid-State Electrochemical Cells},
author = {Delluva, Alexander A. and Dudoff, Jessica and Teeter, Glenn and Holewinski, Adam},
abstractNote = {Solid-state lithium-ion batteries are a hopeful successor to traditional Li-ion cells that use liquid electrolytes. While a growing body of work has characterized the interfaces between various solid electrolytes and the lithium metal, interfaces with common cathode intercalation compounds are comparatively less understood. In this contribution, the influence of polarization and temperature on interfacial stability between LiMn2O4 (LMO) and Li7La3Zr2O12 (LLZO) are investigated. Sputtered thin-film LMO electrodes are utilized to permit high-capacity cycling while retaining a large ratio of interfacial area to electrode bulk. Electrochemical impedance spectroscopy (EIS) is compared across a set of full (LMO|LLZO|Li) and symmetric (LMO|LLZO|LMO, Li|LLZO|Li, and Au|LLZO|Au) cells to delineate impedance features that are specific to the evolution of the cathode interface. Furthermore, additional X-ray photoelectron spectroscopy (XPS) provides evidence of a limited interfacial reaction between LMO and LLZO that coincides with an increase in the impedance of the LMO–LLZO interface.},
doi = {10.1021/acsami.0c03519},
url = {https://www.osti.gov/biblio/1659868}, journal = {ACS Applied Materials and Interfaces},
issn = {1944-8244},
number = 22,
volume = 12,
place = {United States},
year = {2020},
month = {5}
}