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Title: Influence of Coating Protocols on Alumina-Coated Cathode Material: Atomic Layer Deposition versus Wet-Chemical Coating

Abstract

Surface alumina coating is an effective way to protect the cathode materials in lithium-ion batteries, particularly when operating under high voltages. However, the actual structures and functions of surface alumina coatings formed by different synthesis methods are still not clear. In this work, we systematically compared two different synthesis approaches, wet chemical (WC) coating and atomic layer deposition (ALD), for alumina coatings on LiNi0.5Mn0.3Co0.2O2 (NMC532). Using nuclear magnetic resonance and electron microscope characterizations, we found that high-temperature annealing can significantly affect the atomic and chemical structures of alumina coating layers formed byWC method, leading to the formation of more alpha-LiAlO2 buffer layer attached closely to the cathode particles and the improvement of electrochemical performance. Such strong interaction between cathode materials and alumina coatings during annealing is related to the Li extraction during the solution-based coating procedures. On the other hand, ALD-coated samples are less influenced by the high-temperature annealing, showing good electrochemical performance both before and after the heat-treatment. This work proves that different coating protocols have critical influences on the atomic and chemical structures of surface alumina coatings as well as the electrochemical performance of the coated cathodes. (C) The Author(s) 2019. Published by ECS.

Authors:
; ; ; ORCiD logo; ; ;
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States); Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Office of Science (SC), Biological and Environmental Research (BER)
OSTI Identifier:
1573301
Alternate Identifier(s):
OSTI ID: 1579732; OSTI ID: 1607634
Report Number(s):
PNNL-SA-145484
Journal ID: ISSN 0013-4651; /jes/166/15/A3679.atom
Grant/Contract Number:  
AC05-76RL01830; AC02-06CH11357
Resource Type:
Published Article
Journal Name:
Journal of the Electrochemical Society
Additional Journal Information:
Journal Name: Journal of the Electrochemical Society Journal Volume: 166 Journal Issue: 15; Journal ID: ISSN 0013-4651
Publisher:
IOP Publishing - The Electrochemical Society
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE; Cathode Materials; NMC; Alumina Coating; ALD; MAS NMR; TEM; Batteries-Lithium; Wet Chemical

Citation Formats

Han, Binghong, Key, Baris, Lipton, Andrew S., Vaughey, John T., Hughes, Barbara, Trevey, James, and Dogan, Fulya. Influence of Coating Protocols on Alumina-Coated Cathode Material: Atomic Layer Deposition versus Wet-Chemical Coating. United States: N. p., 2019. Web. doi:10.1149/2.0681915jes.
Han, Binghong, Key, Baris, Lipton, Andrew S., Vaughey, John T., Hughes, Barbara, Trevey, James, & Dogan, Fulya. Influence of Coating Protocols on Alumina-Coated Cathode Material: Atomic Layer Deposition versus Wet-Chemical Coating. United States. doi:10.1149/2.0681915jes.
Han, Binghong, Key, Baris, Lipton, Andrew S., Vaughey, John T., Hughes, Barbara, Trevey, James, and Dogan, Fulya. Wed . "Influence of Coating Protocols on Alumina-Coated Cathode Material: Atomic Layer Deposition versus Wet-Chemical Coating". United States. doi:10.1149/2.0681915jes.
@article{osti_1573301,
title = {Influence of Coating Protocols on Alumina-Coated Cathode Material: Atomic Layer Deposition versus Wet-Chemical Coating},
author = {Han, Binghong and Key, Baris and Lipton, Andrew S. and Vaughey, John T. and Hughes, Barbara and Trevey, James and Dogan, Fulya},
abstractNote = {Surface alumina coating is an effective way to protect the cathode materials in lithium-ion batteries, particularly when operating under high voltages. However, the actual structures and functions of surface alumina coatings formed by different synthesis methods are still not clear. In this work, we systematically compared two different synthesis approaches, wet chemical (WC) coating and atomic layer deposition (ALD), for alumina coatings on LiNi0.5Mn0.3Co0.2O2 (NMC532). Using nuclear magnetic resonance and electron microscope characterizations, we found that high-temperature annealing can significantly affect the atomic and chemical structures of alumina coating layers formed byWC method, leading to the formation of more alpha-LiAlO2 buffer layer attached closely to the cathode particles and the improvement of electrochemical performance. Such strong interaction between cathode materials and alumina coatings during annealing is related to the Li extraction during the solution-based coating procedures. On the other hand, ALD-coated samples are less influenced by the high-temperature annealing, showing good electrochemical performance both before and after the heat-treatment. This work proves that different coating protocols have critical influences on the atomic and chemical structures of surface alumina coatings as well as the electrochemical performance of the coated cathodes. (C) The Author(s) 2019. Published by ECS.},
doi = {10.1149/2.0681915jes},
journal = {Journal of the Electrochemical Society},
number = 15,
volume = 166,
place = {United States},
year = {2019},
month = {11}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1149/2.0681915jes

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Cited by: 4 works
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