| Item type |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2021-11-12 |
| タイトル |
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|
タイトル |
Electrochemical Impedance Spectroscopy on the Performance Degradation of LiFePO4/Graphite Lithium-Ion Battery Due to Charge-Discharge Cycling under Different C-Rates |
|
言語 |
en |
| 言語 |
|
|
言語 |
eng |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
lithium-ion battery |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
degradation |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
capacity fading |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
electrochemical impedance spectroscopy |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
LiFePO4 |
| 主題 |
|
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主題Scheme |
Other |
|
主題 |
graphite |
| 資源タイプ |
|
|
資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
|
資源タイプ |
journal article |
| アクセス権 |
|
|
アクセス権 |
open access |
|
アクセス権URI |
http://purl.org/coar/access_right/c_abf2 |
| 作成者 |
Abe, Yusuke
Hori, Natsuki
Kumagai, Seiji
|
| 内容記述 |
|
|
内容記述タイプ |
Abstract |
|
内容記述 |
Lithium-ion batteries (LIBs) using a LiFePO4 cathode and graphite anode were assembled in coin cell form and subjected to 1000 charge-discharge cycles at 1, 2, and 5 C at 25 C. The performance degradation of the LIB cells under di erent C-rates was analyzed by electrochemical impedance spectroscopy (EIS) and scanning electron microscopy. The most severe degradation occurred at 2 C while degradation was mitigated at the highest C-rate of 5 C. EIS data of the equivalent circuit model provided information on the changes in the internal resistance. The charge-transfer resistance within all the cells increased after the cycle test, with the cell cycled at 2 C presenting the greatest increment in the charge-transfer resistance. Agglomerates were observed on the graphite anodes of the cells cycled at 2 and 5 C; these were more abundantly produced in the former cell. The lower degradation of the cell cycled at 5 C was attributed to the lowered capacity utilization of the anode. The larger cell voltage drop caused by the increased C-rate reduced the electrode potential variation allocated to the net electrochemical reactions, contributing to the charge-discharge specific capacity of the cells. |
|
言語 |
en |
| 出版タイプ |
|
|
出版タイプ |
VoR |
|
出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| 書誌情報 |
Energies
巻 12,
号 23,
p. 4507,
発行日 2019
|
| 収録物識別子 |
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|
収録物識別子タイプ |
ISSN |
|
収録物識別子 |
1996-1073 |
| 出版者 |
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出版者 |
MDPI |
| 関連情報 |
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|
関連タイプ |
isIdenticalTo |
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|
識別子タイプ |
DOI |
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|
関連識別子 |
https://doi.org/10.3390/en12234507 |
| 権利情報 |
|
|
権利情報 |
© 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
riA_2021_3 (6.1 MB)
