Abstract
Electrode design is an essential task for successful development of lithium-ion batteries. Provided that the same materials are given, proper dimensioning of the electrodes and balanced composition of the materials in them can maximize the cell performance, such as the discharge capacity. However, many electrode design parameters have conflicting effects on the performance, and thus careful optimization of these parameters is required. This study experimentally investigated the effects of several electrode design parameters on the performance of lithium ion cells with a LiFePO 4 cathode and a natural graphite anode, focusing on their high current operations. The conflicting effects of the conductor ratio (the weight fraction of electronic particle additives), electrode thickness, and electrode density (porosity) on the cell capacity were studied. In addition, a detailed one-dimensional electrochemical model was also used to simulate the observed performance characteristics and to identify their underlying mechanisms limiting the performance. Based on the experimental and numerical results, the optimal ranges for the electrode design parameters were discussed to achieve better performance of the LiFePO 4/graphite batteries.
| Original language | English |
|---|---|
| Pages (from-to) | 443-453 |
| Number of pages | 11 |
| Journal | Journal of Applied Electrochemistry |
| Volume | 42 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - 2012 Jun 1 |
| Externally published | Yes |
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Keywords
- Active material density
- Battery design parameter
- Electrochemical modeling
- Electrode thickness
- LiFePO
- Lithium-ion battery
ASJC Scopus subject areas
- Chemical Engineering(all)
- Electrochemistry
- Materials Chemistry
Cite this
Investigation of design parameter effects on high current performance of lithium-ion cells with LiFePO 4/graphite electrodes. / Yu, Seung-Ho; Chung, Youngmin; Song, Min Seob; Nam, Jin Hyun; Cho, Won Il.
In: Journal of Applied Electrochemistry, Vol. 42, No. 6, 01.06.2012, p. 443-453.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Investigation of design parameter effects on high current performance of lithium-ion cells with LiFePO 4/graphite electrodes
AU - Yu, Seung-Ho
AU - Chung, Youngmin
AU - Song, Min Seob
AU - Nam, Jin Hyun
AU - Cho, Won Il
PY - 2012/6/1
Y1 - 2012/6/1
N2 - Electrode design is an essential task for successful development of lithium-ion batteries. Provided that the same materials are given, proper dimensioning of the electrodes and balanced composition of the materials in them can maximize the cell performance, such as the discharge capacity. However, many electrode design parameters have conflicting effects on the performance, and thus careful optimization of these parameters is required. This study experimentally investigated the effects of several electrode design parameters on the performance of lithium ion cells with a LiFePO 4 cathode and a natural graphite anode, focusing on their high current operations. The conflicting effects of the conductor ratio (the weight fraction of electronic particle additives), electrode thickness, and electrode density (porosity) on the cell capacity were studied. In addition, a detailed one-dimensional electrochemical model was also used to simulate the observed performance characteristics and to identify their underlying mechanisms limiting the performance. Based on the experimental and numerical results, the optimal ranges for the electrode design parameters were discussed to achieve better performance of the LiFePO 4/graphite batteries.
AB - Electrode design is an essential task for successful development of lithium-ion batteries. Provided that the same materials are given, proper dimensioning of the electrodes and balanced composition of the materials in them can maximize the cell performance, such as the discharge capacity. However, many electrode design parameters have conflicting effects on the performance, and thus careful optimization of these parameters is required. This study experimentally investigated the effects of several electrode design parameters on the performance of lithium ion cells with a LiFePO 4 cathode and a natural graphite anode, focusing on their high current operations. The conflicting effects of the conductor ratio (the weight fraction of electronic particle additives), electrode thickness, and electrode density (porosity) on the cell capacity were studied. In addition, a detailed one-dimensional electrochemical model was also used to simulate the observed performance characteristics and to identify their underlying mechanisms limiting the performance. Based on the experimental and numerical results, the optimal ranges for the electrode design parameters were discussed to achieve better performance of the LiFePO 4/graphite batteries.
KW - Active material density
KW - Battery design parameter
KW - Electrochemical modeling
KW - Electrode thickness
KW - LiFePO
KW - Lithium-ion battery
UR - http://www.scopus.com/inward/record.url?scp=84862207269&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84862207269&partnerID=8YFLogxK
U2 - 10.1007/s10800-012-0418-0
DO - 10.1007/s10800-012-0418-0
M3 - Article
AN - SCOPUS:84862207269
VL - 42
SP - 443
EP - 453
JO - Journal of Applied Electrochemistry
JF - Journal of Applied Electrochemistry
SN - 0021-891X
IS - 6
ER -