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Title: Structural Changes and Thermal Stability of Charged LiNi1/3Co1/3Mn1/3O2 Cathode Material for Li-ion Batteries Studied by Time-Resolved XRD

Abstract

Structural changes and their relationship with thermal stability of charged Li0.33Ni1/3Co1/3Mn1/3O2 cathode samples have been studied using time-resolved X-ray diffraction (TR-XRD) in a wide temperature from 25 to 600 C with and without the presence of electrolyte in comparison with Li0.27Ni0.8Co0.15Al0.05O2 cathodes. Unique phase transition behavior during heating is found for the Li0.33Ni1/3Co1/3Mn1/3O2 cathode samples: when no electrolyte is present, the initial layered structure changes first to a LiM2O4-type spinel, and then to a M3O4-type spinel and remains in this structure up to 600 C. For the Li0.33Ni1/3Co1/3Mn1/3O2 cathode sample with electrolyte, additional phase transition from the M3O4-type spinel to the MO-type rock salt phase takes place from about 400 to 441 C together with the formation of metallic phase at about 460 C. The major difference between this type of phase transitions and that for Li0.27Ni0.8Co0.15Al0.05O2 in the presence of electrolyte is the delayed phase transition from the spinel-type to the rock salt-type phase by stretching the temperature range of spinel phases from about 20 to 140 C. This unique behavior is considered as the key factor of the better thermal stability of the Li1-xNi1/3Co1/3Mn1/3O2 cathode materials.

Authors:
; ;
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States). National Synchrotron Light Source
Sponsoring Org.:
Doe - Office Of Science
OSTI Identifier:
980514
Report Number(s):
BNL-93432-2010-JA
Journal ID: ISSN 0378-7753; JPSODZ; TRN: US201015%%1899
DOE Contract Number:  
DE-AC02-98CH10886
Resource Type:
Journal Article
Journal Name:
Journal of Power Sources
Additional Journal Information:
Journal Volume: 189; Journal ID: ISSN 0378-7753
Country of Publication:
United States
Language:
English
Subject:
15 GEOTHERMAL ENERGY; BEHAVIOR; CATHODES; ELECTROLYTES; HEATING; MATERIALS; ROCKS; SALT DEPOSITS; SPINELS; STABILITY; TEMPERATURE RANGE; X-RAY DIFFRACTION; national synchrotron light source

Citation Formats

Nam, K, Yoon, W, and Yang, X. Structural Changes and Thermal Stability of Charged LiNi1/3Co1/3Mn1/3O2 Cathode Material for Li-ion Batteries Studied by Time-Resolved XRD. United States: N. p., 2009. Web. doi:10.1016/j.jpowsour.2008.10.130.
Nam, K, Yoon, W, & Yang, X. Structural Changes and Thermal Stability of Charged LiNi1/3Co1/3Mn1/3O2 Cathode Material for Li-ion Batteries Studied by Time-Resolved XRD. United States. https://doi.org/10.1016/j.jpowsour.2008.10.130
Nam, K, Yoon, W, and Yang, X. 2009. "Structural Changes and Thermal Stability of Charged LiNi1/3Co1/3Mn1/3O2 Cathode Material for Li-ion Batteries Studied by Time-Resolved XRD". United States. https://doi.org/10.1016/j.jpowsour.2008.10.130.
@article{osti_980514,
title = {Structural Changes and Thermal Stability of Charged LiNi1/3Co1/3Mn1/3O2 Cathode Material for Li-ion Batteries Studied by Time-Resolved XRD},
author = {Nam, K and Yoon, W and Yang, X},
abstractNote = {Structural changes and their relationship with thermal stability of charged Li0.33Ni1/3Co1/3Mn1/3O2 cathode samples have been studied using time-resolved X-ray diffraction (TR-XRD) in a wide temperature from 25 to 600 C with and without the presence of electrolyte in comparison with Li0.27Ni0.8Co0.15Al0.05O2 cathodes. Unique phase transition behavior during heating is found for the Li0.33Ni1/3Co1/3Mn1/3O2 cathode samples: when no electrolyte is present, the initial layered structure changes first to a LiM2O4-type spinel, and then to a M3O4-type spinel and remains in this structure up to 600 C. For the Li0.33Ni1/3Co1/3Mn1/3O2 cathode sample with electrolyte, additional phase transition from the M3O4-type spinel to the MO-type rock salt phase takes place from about 400 to 441 C together with the formation of metallic phase at about 460 C. The major difference between this type of phase transitions and that for Li0.27Ni0.8Co0.15Al0.05O2 in the presence of electrolyte is the delayed phase transition from the spinel-type to the rock salt-type phase by stretching the temperature range of spinel phases from about 20 to 140 C. This unique behavior is considered as the key factor of the better thermal stability of the Li1-xNi1/3Co1/3Mn1/3O2 cathode materials.},
doi = {10.1016/j.jpowsour.2008.10.130},
url = {https://www.osti.gov/biblio/980514}, journal = {Journal of Power Sources},
issn = {0378-7753},
number = ,
volume = 189,
place = {United States},
year = {Thu Jan 01 00:00:00 EST 2009},
month = {Thu Jan 01 00:00:00 EST 2009}
}