Yoon, Won-Sub Nam, Kyung-Wan Jang, Donghyuk Chung, Kyung Yoon Cho, Yong-Hun Choi, Seungdon Hanson, Jonathan C. Yang, Xiao-Qing 2024-01-20T15:31:53Z 2024-01-20T15:31:53Z 2021-09-05 2012-02 1388-2481 https://pubs.kist.re.kr/handle/201004/129570 How the structural changes of each active material in mixed cathode systems take place at different charge-discharge rates is quite important in the application of the system in which the mixed cathode materials with different rate capabilities are formed into one composite electrode. Here we report the results of the real time structural change studies of mixed LiMn2O4-LiNi1/3Co1/3Mn1/3O2 composite cathode in a Li-ion cell by using in situ synchrotron-based time resolved x-ray diffraction (TR-XRD) technique. The layer structured component in the mixed composite cathode system shows less utilization at fast discharge rate (high power mode) whereas the spinel structured component is fully utilized. This clearly demonstrates that the reduced capacity at fast discharge rate for this system is caused by the less utilization of the layer structured component. The real time monitoring of the structural behavior at various discharge rates is a great tool to design the best ratios of active materials with different rate capabilities in the mixed cathode systems for different applications. (C) 2011 Elsevier B.V. All rights reserved. English ELSEVIER SCIENCE INC LI-ION BATTERIES ELECTROCHEMICAL EVALUATION THERMAL-DECOMPOSITION PHASE-TRANSITIONS COMPOSITE CATHODE LINI0.8CO0.2O2 LIMN2O4 SPINEL OXIDE XRD The kinetic effect on structural behavior of mixed LiMn2O4-LiNi1/3Co1/3Mn1/3O2 cathode materials studied by in situ time-resolved X-ray diffraction technique Article 10.1016/j.elecom.2011.11.027 1 ELECTROCHEMISTRY COMMUNICATIONS, v.15, no.1, pp.74 - 77 ELECTROCHEMISTRY COMMUNICATIONS 15 1 74 77 scie scopus 000300860400019 2-s2.0-84855673204 Electrochemistry Electrochemistry Article LI-ION BATTERIES ELECTROCHEMICAL EVALUATION THERMAL-DECOMPOSITION PHASE-TRANSITIONS COMPOSITE CATHODE LINI0.8CO0.2O2 LIMN2O4 SPINEL OXIDE XRD Lithium battery Time-resolved XRD Composite cathode LiMn2O4 LiNi1/3Co1/3Mn1/3O2