Yoon, Won-Sub Chung, Kyung Yoon McBreen, James Yang, Xiao-Qing 2024-01-21T02:35:15Z 2024-01-21T02:35:15Z 2021-09-01 2006-08 1388-2481 https://pubs.kist.re.kr/handle/201004/135293 A synchrotron based in situ XRD technique was used to investigate the structural changes of Li1-xCo1/3Ni1/3Mn1/3O2 as cathode material in lithium battery during first charge in comparison with Li1-xNi0.8CO0.15Al0.05O2. The structural changes of these two cathode materials during first charge follow the similar trend as LiNiO2: 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 Li1-xCo1/3Ni1/3Mn1/3O2 is higher than in Li1-xNi0.8Co0.15Al0.05O2, which in turn is higher than in LiNiO2. More importantly, the structural stability of Li1-xCo1/3Ni1/3Mn1/3O2 is higher than Li1-xNi0.8Co0.15Al0.05O2, which in turn is higher than LiNiO2, as reflected in the suppression of hexagonal 3 (H3) phase with collapsed c-axis formed at the end of charge. (c) 2006 Elsevier B.V. All rights reserved. English ELSEVIER SCIENCE INC LITHIUM-ION BATTERIES X-RAY-DIFFRACTION PHASE-TRANSITIONS CATHODE MATERIALS A comparative study on structural changes of LiCo1/3Ni1/3Mn1/3O2 and LiNi0.8Co0.15Al0.05O2 during first charge using in situ XRD Article 10.1016/j.elecom.2006.06.005 1 ELECTROCHEMISTRY COMMUNICATIONS, v.8, no.8, pp.1257 - 1262 ELECTROCHEMISTRY COMMUNICATIONS 8 8 1257 1262 scie scopus 000239870800012 2-s2.0-33746654965 Electrochemistry Electrochemistry Article LITHIUM-ION BATTERIES X-RAY-DIFFRACTION PHASE-TRANSITIONS CATHODE MATERIALS in situ XRD lithium rechargeable batteries LiCo1/3Ni1/3Mn1/3O2 LiNi0.8Co0.15Al0.05O2