Abstract
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.
| Original language | English |
|---|---|
| Pages (from-to) | 536-540 |
| Number of pages | 5 |
| Journal | Electrochemistry Communications |
| Volume | 10 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 2008 Apr 1 |
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Keywords
- Asymmetry
- In situ X-ray diffraction
- LiFePO
- Lithium secondary batteries
ASJC Scopus subject areas
- Chemical Engineering(all)
- Analytical Chemistry
- Electrochemistry
Cite this
Asymmetry between charge and discharge during high rate cycling in LiFePO4 - In Situ X-ray diffraction study. / Shin, Ho Chul; Chung, Kyung Yoon; Min, Won Sik; Byun, Dong Jin; Jang, Ho; Cho, Byung Won.
In: Electrochemistry Communications, Vol. 10, No. 4, 01.04.2008, p. 536-540.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Asymmetry between charge and discharge during high rate cycling in LiFePO4 - In Situ X-ray diffraction study
AU - Shin, Ho Chul
AU - Chung, Kyung Yoon
AU - Min, Won Sik
AU - Byun, Dong Jin
AU - Jang, Ho
AU - Cho, Byung Won
PY - 2008/4/1
Y1 - 2008/4/1
N2 - 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.
AB - 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.
KW - Asymmetry
KW - In situ X-ray diffraction
KW - LiFePO
KW - Lithium secondary batteries
UR - http://www.scopus.com/inward/record.url?scp=40849126517&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=40849126517&partnerID=8YFLogxK
U2 - 10.1016/j.elecom.2008.02.002
DO - 10.1016/j.elecom.2008.02.002
M3 - Article
AN - SCOPUS:40849126517
VL - 10
SP - 536
EP - 540
JO - Electrochemistry Communications
JF - Electrochemistry Communications
SN - 1388-2481
IS - 4
ER -