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Title: Local Structure of Glassy Lithium Phosphorus Oxynitride Thin Films: A Combined Experimental and Ab Initio Approach

Abstract

Lithium phosphorus oxynitride (LiPON) is an amorphous solid–state lithium ion conductor displaying exemplary cyclability against lithium metal anodes. There is no definitive explanation for this stability due to the limited understanding of the structure of LiPON. Herein, we provide a structural model of RF–sputtered LiPON. Information about the short–range structure results from 1D and 2D solid–state NMR experiments. These results are compared with first principles chemical shielding calculations of Li–P–O/N crystals and ab initio molecular dynamics–generated amorphous LiPON models to unequivocally identify the glassy structure as primarily isolated phosphate monomers with N incorporated in both apical and as bridging sites in phosphate dimers. Structural results suggest LiPON's stability is a result of its glassy character. In conclusion, free–standing LiPON films are produced that exhibit a high degree of flexibility, highlighting the unique mechanical properties of glassy materials.

Authors:
ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [2]; ORCiD logo [2]; ORCiD logo [1]; ORCiD logo [2]
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  2. Univ. of California, San Diego, La Jolla, CA (United States)
Publication Date:
Research Org.:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States); Univ. of California, San Diego, La Jolla, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation Major Research Instrumentation Program; National Science Foundation (NSF)
OSTI Identifier:
1708990
Alternate Identifier(s):
OSTI ID: 1706486; OSTI ID: 1786043
Report Number(s):
LLNL-JRNL-810272
Journal ID: ISSN 1433-7851; 1016809
Grant/Contract Number:  
AC52-07NA27344; SC0002357; CHE‐1338173; ACI‐1548562
Resource Type:
Accepted Manuscript
Journal Name:
Angewandte Chemie (International Edition)
Additional Journal Information:
Journal Name: Angewandte Chemie (International Edition); Journal Volume: 59; Journal ID: ISSN 1433-7851
Publisher:
Wiley
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; ab initio calculations; GIPAW; LiPON; solid electrolytes; solid-state NMR spectroscopy

Citation Formats

Marple, Maxwell A. T., Wynn, Thomas A., Cheng, Diyi, Shimizu, Ryosuke, Mason, Harris E., and Meng, Y. Shirley. Local Structure of Glassy Lithium Phosphorus Oxynitride Thin Films: A Combined Experimental and Ab Initio Approach. United States: N. p., 2020. Web. doi:10.1002/anie.202009501.
Marple, Maxwell A. T., Wynn, Thomas A., Cheng, Diyi, Shimizu, Ryosuke, Mason, Harris E., & Meng, Y. Shirley. Local Structure of Glassy Lithium Phosphorus Oxynitride Thin Films: A Combined Experimental and Ab Initio Approach. United States. https://doi.org/10.1002/anie.202009501
Marple, Maxwell A. T., Wynn, Thomas A., Cheng, Diyi, Shimizu, Ryosuke, Mason, Harris E., and Meng, Y. Shirley. Thu . "Local Structure of Glassy Lithium Phosphorus Oxynitride Thin Films: A Combined Experimental and Ab Initio Approach". United States. https://doi.org/10.1002/anie.202009501. https://www.osti.gov/servlets/purl/1708990.
@article{osti_1708990,
title = {Local Structure of Glassy Lithium Phosphorus Oxynitride Thin Films: A Combined Experimental and Ab Initio Approach},
author = {Marple, Maxwell A. T. and Wynn, Thomas A. and Cheng, Diyi and Shimizu, Ryosuke and Mason, Harris E. and Meng, Y. Shirley},
abstractNote = {Lithium phosphorus oxynitride (LiPON) is an amorphous solid–state lithium ion conductor displaying exemplary cyclability against lithium metal anodes. There is no definitive explanation for this stability due to the limited understanding of the structure of LiPON. Herein, we provide a structural model of RF–sputtered LiPON. Information about the short–range structure results from 1D and 2D solid–state NMR experiments. These results are compared with first principles chemical shielding calculations of Li–P–O/N crystals and ab initio molecular dynamics–generated amorphous LiPON models to unequivocally identify the glassy structure as primarily isolated phosphate monomers with N incorporated in both apical and as bridging sites in phosphate dimers. Structural results suggest LiPON's stability is a result of its glassy character. In conclusion, free–standing LiPON films are produced that exhibit a high degree of flexibility, highlighting the unique mechanical properties of glassy materials.},
doi = {10.1002/anie.202009501},
journal = {Angewandte Chemie (International Edition)},
number = ,
volume = 59,
place = {United States},
year = {Thu Aug 20 00:00:00 EDT 2020},
month = {Thu Aug 20 00:00:00 EDT 2020}
}

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