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Process related effects upon formation of composite electrolyte interfaces: Nitridation and reduction of NASICON-type electrolytes by deposition of LiPON

Guhl, Conrad and Fingerle, Mathias and Hausbrand, René (2017):
Process related effects upon formation of composite electrolyte interfaces: Nitridation and reduction of NASICON-type electrolytes by deposition of LiPON.
362, In: Journal of Power Sources, Elsevier Science Publishing, pp. 299-307, ISSN 03787753, DOI: 10.1016/j.jpowsour.2017.07.051,
[Online-Edition: https://doi.org/10.1016/j.jpowsour.2017.07.051],
[Article]

Abstract

Commercial NASICON-type electrolyte plates are coated with a thin film of LiPON to obtain a composite electrolyte system with high conductivity at room temperature that can be used in contact with metallic Lithium. The formation of the interface between the NASICON substrate and the LiPON coating is studied using an in-situ X-ray photoemission spectroscopy (XPS) surface science approach. The process of LiPON deposition induces changes in the surface chemical structure of the NASICON substrates as observed by XPS, including the partial reduction of Ti and the incorporation of N into the NASICON. The practical impact of the interface formation is studied by impedance spectroscopy, revealing a substantial increase of resistance for LiPON coated samples.

Item Type: Article
Erschienen: 2017
Creators: Guhl, Conrad and Fingerle, Mathias and Hausbrand, René
Title: Process related effects upon formation of composite electrolyte interfaces: Nitridation and reduction of NASICON-type electrolytes by deposition of LiPON
Language: English
Abstract:

Commercial NASICON-type electrolyte plates are coated with a thin film of LiPON to obtain a composite electrolyte system with high conductivity at room temperature that can be used in contact with metallic Lithium. The formation of the interface between the NASICON substrate and the LiPON coating is studied using an in-situ X-ray photoemission spectroscopy (XPS) surface science approach. The process of LiPON deposition induces changes in the surface chemical structure of the NASICON substrates as observed by XPS, including the partial reduction of Ti and the incorporation of N into the NASICON. The practical impact of the interface formation is studied by impedance spectroscopy, revealing a substantial increase of resistance for LiPON coated samples.

Journal or Publication Title: Journal of Power Sources
Volume: 362
Publisher: Elsevier Science Publishing
Uncontrolled Keywords: Solid electrolyte, Interface, Surface science, LiPON, NASICON, Interlayer
Divisions: 11 Department of Materials and Earth Sciences
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences > Material Science > Surface Science
Date Deposited: 26 Sep 2017 18:22
DOI: 10.1016/j.jpowsour.2017.07.051
Official URL: https://doi.org/10.1016/j.jpowsour.2017.07.051
Funders: The authors would like to thank the DFG (618064) for funding of the project., Additionally, the authors would like to thank the BMBF (03KP801) for funding the UHV system DAISY-BAT., Help with nitrogen plasma experiments by Jona Schuch and kind introduction into the experimental setup by Ruben Precht has to be acknowledged.
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