Shin, Ho Chul Chung, Kyung Yoon Min, Won Sik Byun, Dong Jin Jang, Ho Cho, Byung Won 2024-01-20T23:32:40Z 2024-01-20T23:32:40Z 2021-09-03 2008-04 1388-2481 https://pubs.kist.re.kr/handle/201004/133608 Asymmetric behavior of structural changes during charge and discharge of C-coated LiFePO4 has been investigated using synchrotron based in situ XRD. C-coated LiFePO4 undergoes phase transformation from triphylite to heterosite during charge and vise versa during discharge. However, it is observed that the phase transformation of C-coated Li1-xFePO4 during discharge is more difficult to be complete than that during charge. At 2C rate, the phase transformation from heterosite to triphylite was hardly observed during discharge while the complete phase transformation was observed in the previous charge. This indicates that the degree of the phase transformation completeness depends on the direction of the phase transformations. (c) 2008 Elsevier B.V. All rights reserved. English ELSEVIER SCIENCE INC PHOSPHO-OLIVINES Asymmetry between charge and discharge during high rate cycling in LiFePO4 - In situ X-ray diffraction study Article 10.1016/j.elecom.2008.02.002 1 ELECTROCHEMISTRY COMMUNICATIONS, v.10, no.4, pp.536 - 540 ELECTROCHEMISTRY COMMUNICATIONS 10 4 536 540 scie scopus 000255818500010 2-s2.0-40849126517 Electrochemistry Electrochemistry Article PHOSPHO-OLIVINES LiFePO4 asymmetry in situ X-ray diffraction lithium secondary batteries