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Title: A Comparative Study on Structural Changes of LiCo1/3Ni1/3Mn1/3O2 and LiNi0.8Co0.15Al0.05O2 During First Charge using in situ XRD

Abstract

A synchrotron based in situ XRD technique was used to investigate the structural changes of Li{sub 1-x}Co{sub 1/3}Ni{sub 1/3}Mn{sub 1/3}O{sub 2} as cathode material in lithium battery during first charge in comparison with Li{sub 1-x}Ni{sub 0.8}Co{sub 0.15}Al{sub 0.05}O{sub 2}. The structural changes of these two cathode materials during first charge follow the similar trend as LiNiO{sub 2}: an expansion along the c-axis of the unit cell with contractions along the a- and b-axis during the early stage of charge and a major contraction along the c-axis with slight expansions along the a- and b-axis near the end of charge at high voltage limit. However, the degree of disorder in Li{sub 1-x}Co{sub 1/3}Ni{sub 1/3}Mn{sub 1/3}O{sub 2} is higher than in Li{sub 1-x}Ni{sub 0.8}Co{sub 0.15}Al{sub 0.05}O{sub 2}, which in turn is higher than in LiNiO{sub 2}. More importantly, the structural stability of Li{sub 1-x}Co{sub 1/3}Ni{sub 1/3}Mn{sub 1/3}O{sub 2} is higher than Li{sub 1-x}Ni{sub 0.8}Co{sub 0.15}Al{sub 0.05}O{sub 2}, which in turn is higher than LiNiO{sub 2}, as reflected in the suppression of hexagonal 3 (H3) phase with collapsed c-axis formed at the end of charge.

Authors:
; ; ;
Publication Date:
Research Org.:
Brookhaven National Laboratory (BNL) National Synchrotron Light Source
Sponsoring Org.:
Doe - Office Of Science
OSTI Identifier:
914183
Report Number(s):
BNL-78751-2007-JA
Journal ID: ISSN 1388-2481; TRN: US0801599
DOE Contract Number:  
DE-AC02-98CH10886
Resource Type:
Journal Article
Resource Relation:
Journal Name: Electrochem. Commun.; Journal Volume: 8; Journal Issue: 8
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; CATHODES; CONTRACTION; LITHIUM; STABILITY; SYNCHROTRONS; X-RAY DIFFRACTION; national synchrotron light source

Citation Formats

Yoon,W., Chung, K., McBreen, J., and Yang, X.. A Comparative Study on Structural Changes of LiCo1/3Ni1/3Mn1/3O2 and LiNi0.8Co0.15Al0.05O2 During First Charge using in situ XRD. United States: N. p., 2006. Web. doi:10.1016/j.elecom.2006.06.005.
Yoon,W., Chung, K., McBreen, J., & Yang, X.. A Comparative Study on Structural Changes of LiCo1/3Ni1/3Mn1/3O2 and LiNi0.8Co0.15Al0.05O2 During First Charge using in situ XRD. United States. doi:10.1016/j.elecom.2006.06.005.
Yoon,W., Chung, K., McBreen, J., and Yang, X.. Sun . "A Comparative Study on Structural Changes of LiCo1/3Ni1/3Mn1/3O2 and LiNi0.8Co0.15Al0.05O2 During First Charge using in situ XRD". United States. doi:10.1016/j.elecom.2006.06.005.
@article{osti_914183,
title = {A Comparative Study on Structural Changes of LiCo1/3Ni1/3Mn1/3O2 and LiNi0.8Co0.15Al0.05O2 During First Charge using in situ XRD},
author = {Yoon,W. and Chung, K. and McBreen, J. and Yang, X.},
abstractNote = {A synchrotron based in situ XRD technique was used to investigate the structural changes of Li{sub 1-x}Co{sub 1/3}Ni{sub 1/3}Mn{sub 1/3}O{sub 2} as cathode material in lithium battery during first charge in comparison with Li{sub 1-x}Ni{sub 0.8}Co{sub 0.15}Al{sub 0.05}O{sub 2}. The structural changes of these two cathode materials during first charge follow the similar trend as LiNiO{sub 2}: an expansion along the c-axis of the unit cell with contractions along the a- and b-axis during the early stage of charge and a major contraction along the c-axis with slight expansions along the a- and b-axis near the end of charge at high voltage limit. However, the degree of disorder in Li{sub 1-x}Co{sub 1/3}Ni{sub 1/3}Mn{sub 1/3}O{sub 2} is higher than in Li{sub 1-x}Ni{sub 0.8}Co{sub 0.15}Al{sub 0.05}O{sub 2}, which in turn is higher than in LiNiO{sub 2}. More importantly, the structural stability of Li{sub 1-x}Co{sub 1/3}Ni{sub 1/3}Mn{sub 1/3}O{sub 2} is higher than Li{sub 1-x}Ni{sub 0.8}Co{sub 0.15}Al{sub 0.05}O{sub 2}, which in turn is higher than LiNiO{sub 2}, as reflected in the suppression of hexagonal 3 (H3) phase with collapsed c-axis formed at the end of charge.},
doi = {10.1016/j.elecom.2006.06.005},
journal = {Electrochem. Commun.},
number = 8,
volume = 8,
place = {United States},
year = {Sun Jan 01 00:00:00 EST 2006},
month = {Sun Jan 01 00:00:00 EST 2006}
}