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Title: Effects of cathode electrolyte interfacial (CEI) layer on long term cycling of all-solid-state thin-film batteries

Journal Article · · Journal of Power Sources
 [1];  [1];  [2];  [2];  [3];  [3];  [3];  [3];  [1]
  1. Univ. of California, San Diego, CA (United States). Dept. of NanoEngineering
  2. Brookhaven National Lab. (BNL), Upton, NY (United States). Center for Functional Nanomaterials
  3. STMicroelectronics, Tours (France)

All-solid-state lithium-ion batteries have the potential to not only push the current limits of energy density by utilizing Li metal, but also improve safety by avoiding flammable organic electrolyte. However, understanding the role of solid electrolyte - electrode interfaces will be critical to improve performance. In this study, we conducted long term cycling on commercially available lithium cobalt oxide (LCO)/ lithium phosphorus oxynitride (LiPON)/lithium (Li) cells at elevated temperature to investigate the interfacial phenomena that lead to capacity decay. STEM-EELS analysis of samples revealed a previously unreported disordered layer between the LCO cathode and LiPON electrolyte. This electrochemically inactive layer grew in thickness leading to loss of capacity and increase of interfacial resistance when cycled at 80 °C. The stabilization of this layer through interfacial engineering is crucial to improve the long term performance of thin-film batteries especially under thermal stress.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States); Univ. of California, San Diego, CA (United States); STMicroelectronics, Tours (France)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); STMicroelectronics (France)
Grant/Contract Number:
SC0012704; SC0002357
OSTI ID:
1341677
Alternate ID(s):
OSTI ID: 1327563; OSTI ID: 1595352
Report Number(s):
BNL-113405-2017-JA; R&D Project: 16060; 16060; KC0403020
Journal Information:
Journal of Power Sources, Vol. 324; ISSN 0378-7753
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 76 works
Citation information provided by
Web of Science

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Cited By (10)

Self-Standing 3D Cathodes for All-Solid-State Thin Film Lithium Batteries with Improved Interface Kinetics journal November 2018
Electrochemical and Structural Analysis in All‐Solid‐State Lithium Batteries by Analytical Electron Microscopy: Progress and Perspectives journal October 2019
Degradation of thin-film lithium batteries characterised by improved potentiometric measurement of entropy change journal January 2018
Kinetics‐Controlled Degradation Reactions at Crystalline LiPON/Li x CoO 2 and Crystalline LiPON/Li‐Metal Interfaces journal March 2018
Reviving lithium cobalt oxide-based lithium secondary batteries-toward a higher energy density journal January 2018
Automated generation and ensemble-learned matching of X-ray absorption spectra journal March 2018
Electro–Chemo–Mechanical Issues at the Interfaces in Solid‐State Lithium Metal Batteries journal April 2019
Ni-Al-Cr superalloy as high temperature cathode current collector for advanced thin film Li batteries text January 2018
Automated Generation and Ensemble-Learned Matching of X-ray Absorption Spectra preprint January 2017
Kinetics-Controlled Degradation Reactions at Crystalline LiPON/Li(x)CoO(2) and Crystalline LiPON/Li-metal Interfaces text January 2018

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