Heat Generation in NMC622 Coin Cells during Electrochemical Cycling: Separation of Reversible and Irreversible Heat Effects
The thermal behavior of a commercial lithium-ion cell with the cathode material LiNi<sub>0.6</sub>Mn<sub>0.2</sub>Co<sub>0.2</sub>O<sub>2</sub> (NMC622) was investigated during the cycling process using a Tian-Calvet calorimeter (C80, SETARAM Instrumen...
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MDPI AG
2020-11-01
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| Series: | Batteries |
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| Online Access: | https://www.mdpi.com/2313-0105/6/4/55 |
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| author | Wenjiao Zhao Magnus Rohde Ijaz Ul Mohsin Carlos Ziebert Hans J. Seifert |
| author_facet | Wenjiao Zhao Magnus Rohde Ijaz Ul Mohsin Carlos Ziebert Hans J. Seifert |
| author_sort | Wenjiao Zhao |
| collection | DOAJ |
| description | The thermal behavior of a commercial lithium-ion cell with the cathode material LiNi<sub>0.6</sub>Mn<sub>0.2</sub>Co<sub>0.2</sub>O<sub>2</sub> (NMC622) was investigated during the cycling process using a Tian-Calvet calorimeter (C80, SETARAM Instrumentation, France). Various current flows of 42.5, 85, and 170 mA corresponding to charging rates of 0.5, 1, and 2 C, respectively, were applied in the measurements. The corresponding heat flow rates were measured by the C80 calorimeter at 30 °C. The reversible heat effect due to the reversible electrochemical reaction was quantified by the entropy change measurement. The irreversible heat effect due to internal resistances was determined by the electrochemical impedance spectroscopy (EIS) and the galvanostatic intermittent titration technique (GITT). The results were compared with the direct measurement of the heat effect by calorimetry during electrochemical cycling. |
| first_indexed | 2024-03-10T14:58:40Z |
| format | Article |
| id | doaj.art-3d91afcb754b4ec48d4f6d99a3642b68 |
| institution | Directory Open Access Journal |
| issn | 2313-0105 |
| language | English |
| last_indexed | 2024-03-10T14:58:40Z |
| publishDate | 2020-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Batteries |
| spelling | doaj.art-3d91afcb754b4ec48d4f6d99a3642b682023-11-20T20:21:37ZengMDPI AGBatteries2313-01052020-11-01645510.3390/batteries6040055Heat Generation in NMC622 Coin Cells during Electrochemical Cycling: Separation of Reversible and Irreversible Heat EffectsWenjiao Zhao0Magnus Rohde1Ijaz Ul Mohsin2Carlos Ziebert3Hans J. Seifert4Volkswagen AG, 38239 Salzgitter, GermanyKarlsruhe Institute of Technology, Institute for Applied Materials-Applied Materials Physics, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein, GermanyKarlsruhe Institute of Technology, Institute for Applied Materials-Applied Materials Physics, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein, GermanyKarlsruhe Institute of Technology, Institute for Applied Materials-Applied Materials Physics, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein, GermanyKarlsruhe Institute of Technology, Institute for Applied Materials-Applied Materials Physics, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein, GermanyThe thermal behavior of a commercial lithium-ion cell with the cathode material LiNi<sub>0.6</sub>Mn<sub>0.2</sub>Co<sub>0.2</sub>O<sub>2</sub> (NMC622) was investigated during the cycling process using a Tian-Calvet calorimeter (C80, SETARAM Instrumentation, France). Various current flows of 42.5, 85, and 170 mA corresponding to charging rates of 0.5, 1, and 2 C, respectively, were applied in the measurements. The corresponding heat flow rates were measured by the C80 calorimeter at 30 °C. The reversible heat effect due to the reversible electrochemical reaction was quantified by the entropy change measurement. The irreversible heat effect due to internal resistances was determined by the electrochemical impedance spectroscopy (EIS) and the galvanostatic intermittent titration technique (GITT). The results were compared with the direct measurement of the heat effect by calorimetry during electrochemical cycling.https://www.mdpi.com/2313-0105/6/4/55lithium-ion batterythermal behaviorheat generationthermal managemententropy |
| spellingShingle | Wenjiao Zhao Magnus Rohde Ijaz Ul Mohsin Carlos Ziebert Hans J. Seifert Heat Generation in NMC622 Coin Cells during Electrochemical Cycling: Separation of Reversible and Irreversible Heat Effects Batteries lithium-ion battery thermal behavior heat generation thermal management entropy |
| title | Heat Generation in NMC622 Coin Cells during Electrochemical Cycling: Separation of Reversible and Irreversible Heat Effects |
| title_full | Heat Generation in NMC622 Coin Cells during Electrochemical Cycling: Separation of Reversible and Irreversible Heat Effects |
| title_fullStr | Heat Generation in NMC622 Coin Cells during Electrochemical Cycling: Separation of Reversible and Irreversible Heat Effects |
| title_full_unstemmed | Heat Generation in NMC622 Coin Cells during Electrochemical Cycling: Separation of Reversible and Irreversible Heat Effects |
| title_short | Heat Generation in NMC622 Coin Cells during Electrochemical Cycling: Separation of Reversible and Irreversible Heat Effects |
| title_sort | heat generation in nmc622 coin cells during electrochemical cycling separation of reversible and irreversible heat effects |
| topic | lithium-ion battery thermal behavior heat generation thermal management entropy |
| url | https://www.mdpi.com/2313-0105/6/4/55 |
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