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Title: Interrogation of Electrochemical Properties of Polymer Electrolyte Thin Films with Interdigitated Electrodes

The ability to characterize bulk and interfacial transport properties of polymer electrolytes is critical to realizing their potential applications in electrochemical energy storage devices. In this paper, we leverage custom microfabricated interdigitated electrode array (IDEs) as a platform to probe ion transport properties of polymer electrolytes films through electrochemical impedance spectroscopy (EIS) measurements. Using poly(ethylene oxide) (PEO) blended with lithium bis(trifluoromethanesulfonyl) imide (LiTFSI) as a model dry polymer electrolyte system, we investigate how geometric parameters of the IDEs influence the quality and analysis of EIS measurements. By focusing on films on the nanometer film thickness (ca. 50 nm), EIS measurements revealed diffusional processes near the electrode/polymer interface that may be difficult to observe with conventional thick films. Moreover, irreversible impedance spectra were observed at elevated temperatures when using IDEs with large electrode metal fractions. These irreversible processes were eliminated through passivation of the IDE with different oxides (SiO 2, Al 2O 3, or TiO 2). Ultimately, the ionic conductivity of PEO-LiTFSI electrolytes is confidently determined when appropriate IDE geometries and equivalent circuits are used. Lastly, our work demonstrates the use of IDEs and nanothin polymer electrolytes films as a versatile platform for rapid and efficient interrogation of both bulk andmore » interfacial electrochemical properties.« less
Authors:
ORCiD logo [1] ; ORCiD logo [2] ; ORCiD logo [2] ; ORCiD logo [2] ; ORCiD logo [2] ; ORCiD logo [2] ; ORCiD logo [1] ;  [2] ; ORCiD logo [1] ; ORCiD logo [1]
  1. Univ. of Chicago, IL (United States); Argonne National Lab. (ANL), Lemont, IL (United States)
  2. Univ. of Chicago, IL (United States)
Publication Date:
Grant/Contract Number:
AC02-06CH11357
Type:
Accepted Manuscript
Journal Name:
Journal of the Electrochemical Society
Additional Journal Information:
Journal Volume: 165; Journal Issue: 16; Journal ID: ISSN 0013-4651
Publisher:
The Electrochemical Society
Research Org:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; Films; Interdigitated electrodes; Polymer; Thin films
OSTI Identifier:
1487126

Sharon, Daniel, Bennington, Peter, Liu, Claire, Kambe, Yu, Dong, Ban Xuan, Burnett, Veronica F., Dolejsi, Moshe, Grocke, Garrett, Patel, Shrayesh N., and Nealey, Paul F.. Interrogation of Electrochemical Properties of Polymer Electrolyte Thin Films with Interdigitated Electrodes. United States: N. p., Web. doi:10.1149/2.0291816jes.
Sharon, Daniel, Bennington, Peter, Liu, Claire, Kambe, Yu, Dong, Ban Xuan, Burnett, Veronica F., Dolejsi, Moshe, Grocke, Garrett, Patel, Shrayesh N., & Nealey, Paul F.. Interrogation of Electrochemical Properties of Polymer Electrolyte Thin Films with Interdigitated Electrodes. United States. doi:10.1149/2.0291816jes.
Sharon, Daniel, Bennington, Peter, Liu, Claire, Kambe, Yu, Dong, Ban Xuan, Burnett, Veronica F., Dolejsi, Moshe, Grocke, Garrett, Patel, Shrayesh N., and Nealey, Paul F.. 2018. "Interrogation of Electrochemical Properties of Polymer Electrolyte Thin Films with Interdigitated Electrodes". United States. doi:10.1149/2.0291816jes.
@article{osti_1487126,
title = {Interrogation of Electrochemical Properties of Polymer Electrolyte Thin Films with Interdigitated Electrodes},
author = {Sharon, Daniel and Bennington, Peter and Liu, Claire and Kambe, Yu and Dong, Ban Xuan and Burnett, Veronica F. and Dolejsi, Moshe and Grocke, Garrett and Patel, Shrayesh N. and Nealey, Paul F.},
abstractNote = {The ability to characterize bulk and interfacial transport properties of polymer electrolytes is critical to realizing their potential applications in electrochemical energy storage devices. In this paper, we leverage custom microfabricated interdigitated electrode array (IDEs) as a platform to probe ion transport properties of polymer electrolytes films through electrochemical impedance spectroscopy (EIS) measurements. Using poly(ethylene oxide) (PEO) blended with lithium bis(trifluoromethanesulfonyl) imide (LiTFSI) as a model dry polymer electrolyte system, we investigate how geometric parameters of the IDEs influence the quality and analysis of EIS measurements. By focusing on films on the nanometer film thickness (ca. 50 nm), EIS measurements revealed diffusional processes near the electrode/polymer interface that may be difficult to observe with conventional thick films. Moreover, irreversible impedance spectra were observed at elevated temperatures when using IDEs with large electrode metal fractions. These irreversible processes were eliminated through passivation of the IDE with different oxides (SiO2, Al2O3, or TiO2). Ultimately, the ionic conductivity of PEO-LiTFSI electrolytes is confidently determined when appropriate IDE geometries and equivalent circuits are used. Lastly, our work demonstrates the use of IDEs and nanothin polymer electrolytes films as a versatile platform for rapid and efficient interrogation of both bulk and interfacial electrochemical properties.},
doi = {10.1149/2.0291816jes},
journal = {Journal of the Electrochemical Society},
number = 16,
volume = 165,
place = {United States},
year = {2018},
month = {12}
}

Works referenced in this record:

Interdigital sensors and transducers
journal, May 2004

Self-Assembly and Transport Limitations in Confined Nafion Films
journal, January 2013
  • Modestino, Miguel A.; Paul, Devproshad K.; Dishari, Shudipto
  • Macromolecules, Vol. 46, Issue 3, p. 867-873
  • DOI: 10.1021/ma301999a