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Title: Electronic structural studies on the improved thermal stability of Li(Ni0.8Co0.15Al0.05)O2 by ZrO2 coating for lithium ion batteries

Abstract

The electronic structures of bare and ZrO 2-coated Li(Ni 0.8Co 0.15Al 0.05)O 2 electrode systems were investigated using a combination of time-resolved X-ray diffraction and soft X-ray absorption spectroscopy (XAS) techniques. The ZrO 2 coating on the surface of Li(Ni 0.8Co 0.15Al 0.05)O 2 was effective in elevating the onset temperature of the dissociation of charged Li 0.33(Ni 0.8Co 0.15Al 0.05)O 2, which will enhance the safety of Li-ion cells. Lastly, soft XAS spectra of the Ni LII,III-edge in the partial electron yield mode were obtained, which showed that the enhanced electrochemical properties and thermal stability of the cathode materials by ZrO 2 coating can be attributed to the suppression of unwanted Ni oxidation state changes at the surface.

Authors:
; ; ; ; ; ; ; ; ; ; ; ORCiD logo
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States). National Synchrotron Light Source
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
OSTI Identifier:
1348290
Report Number(s):
BNL-113647-2017-JA
Journal ID: ISSN 0021-891X; VT1201000
Grant/Contract Number:  
SC0012704
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Applied Electrochemistry
Additional Journal Information:
Journal Volume: 47; Journal Issue: 5; Journal ID: ISSN 0021-891X
Publisher:
Springer
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE; National Synchrotron Light Source; Li(Ni0.8Co0.15Al0.05)O2; ZrO2 coating; thermal stability; soft X-ray absorption spectroscopy (XAS); Batteries

Citation Formats

Kim, Ji-Young, Kim, Sang Hoon, Kim, Dong Hyun, Susanto, Dieky, Kim, Se Young, Chang, Won-Young, Cho, Byung Won, Yoon, Won-Sub, Bak, Seong Min, Yang, Xiao Qing, Nam, Kyung Wan, and Chung, Kyung Yoon. Electronic structural studies on the improved thermal stability of Li(Ni0.8Co0.15Al0.05)O2 by ZrO2 coating for lithium ion batteries. United States: N. p., 2017. Web. doi:10.1007/s10800-017-1062-5.
Kim, Ji-Young, Kim, Sang Hoon, Kim, Dong Hyun, Susanto, Dieky, Kim, Se Young, Chang, Won-Young, Cho, Byung Won, Yoon, Won-Sub, Bak, Seong Min, Yang, Xiao Qing, Nam, Kyung Wan, & Chung, Kyung Yoon. Electronic structural studies on the improved thermal stability of Li(Ni0.8Co0.15Al0.05)O2 by ZrO2 coating for lithium ion batteries. United States. doi:10.1007/s10800-017-1062-5.
Kim, Ji-Young, Kim, Sang Hoon, Kim, Dong Hyun, Susanto, Dieky, Kim, Se Young, Chang, Won-Young, Cho, Byung Won, Yoon, Won-Sub, Bak, Seong Min, Yang, Xiao Qing, Nam, Kyung Wan, and Chung, Kyung Yoon. Tue . "Electronic structural studies on the improved thermal stability of Li(Ni0.8Co0.15Al0.05)O2 by ZrO2 coating for lithium ion batteries". United States. doi:10.1007/s10800-017-1062-5. https://www.osti.gov/servlets/purl/1348290.
@article{osti_1348290,
title = {Electronic structural studies on the improved thermal stability of Li(Ni0.8Co0.15Al0.05)O2 by ZrO2 coating for lithium ion batteries},
author = {Kim, Ji-Young and Kim, Sang Hoon and Kim, Dong Hyun and Susanto, Dieky and Kim, Se Young and Chang, Won-Young and Cho, Byung Won and Yoon, Won-Sub and Bak, Seong Min and Yang, Xiao Qing and Nam, Kyung Wan and Chung, Kyung Yoon},
abstractNote = {The electronic structures of bare and ZrO2-coated Li(Ni0.8Co0.15Al0.05)O2 electrode systems were investigated using a combination of time-resolved X-ray diffraction and soft X-ray absorption spectroscopy (XAS) techniques. The ZrO2 coating on the surface of Li(Ni0.8Co0.15Al0.05)O2 was effective in elevating the onset temperature of the dissociation of charged Li0.33(Ni0.8Co0.15Al0.05)O2, which will enhance the safety of Li-ion cells. Lastly, soft XAS spectra of the Ni LII,III-edge in the partial electron yield mode were obtained, which showed that the enhanced electrochemical properties and thermal stability of the cathode materials by ZrO2 coating can be attributed to the suppression of unwanted Ni oxidation state changes at the surface.},
doi = {10.1007/s10800-017-1062-5},
journal = {Journal of Applied Electrochemistry},
number = 5,
volume = 47,
place = {United States},
year = {2017},
month = {3}
}

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