Temperature effect on “Ragone Plots” of lithium-ion batteries
Temperature is a major factor affecting lithium-ion batteries (LIB) performances including power, energy and life. Energy density vs. power density (E(P)) charts known as “Ragone plots” are convenient charts for comparing the performance of energy storage systems (ESS) such as batteries, supercapaci...
| Main Authors: | , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
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2018
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| Online Access: | https://hdl.handle.net/10356/85433 http://hdl.handle.net/10220/45347 |
| _version_ | 1811692016084451328 |
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| author | Kumar, S. Krishna Abduh, Audy A. B. M. Sabih, Othmane Yazami, Rachid |
| author2 | Energy Research Institute @ NTU (ERI@N) |
| author_facet | Energy Research Institute @ NTU (ERI@N) Kumar, S. Krishna Abduh, Audy A. B. M. Sabih, Othmane Yazami, Rachid |
| author_sort | Kumar, S. Krishna |
| collection | NTU |
| description | Temperature is a major factor affecting lithium-ion batteries (LIB) performances including power, energy and life. Energy density vs. power density (E(P)) charts known as “Ragone plots” are convenient charts for comparing the performance of energy storage systems (ESS) such as batteries, supercapacitors, fuel cells, flywheels, hydrogen and gasoline. Basically, Ragone plots allow one to determine the amount of energy E (Wh kg−1 and Wh l−1) an ESS may deliver under a constant power load P (W kg−1 and W l−1). In this study Ragone charts are achieved on commercial LIB cells at temperatures ranging from −20°C to + 55°C. Cells are first charged using CCCV protocol at C/10 up to 4.2 V at the ambient temperatures (∼25°C). Then cells are discharged isothermally at constant rates ranging from C/5 to 10 C. To account for varying power and temperature Ragone isotherms are integrated over the power range yielding a functional Integrated Energy-Power (∫PE(P)dP∣T−−−−−−−−−−−√2). The ratio of integrated areas at T and at 25°C gives the “Energy-Power Index” (EPI) (%). The EPI vs. T profile shows a linear increase between −10°C and 25°C then it makes a semi-plateau between 25°C and 55°C. |
| first_indexed | 2024-10-01T06:29:04Z |
| format | Journal Article |
| id | ntu-10356/85433 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T06:29:04Z |
| publishDate | 2018 |
| record_format | dspace |
| spelling | ntu-10356/854332021-01-20T03:02:48Z Temperature effect on “Ragone Plots” of lithium-ion batteries Kumar, S. Krishna Abduh, Audy A. B. M. Sabih, Othmane Yazami, Rachid Energy Research Institute @ NTU (ERI@N) Ragone Plots Lithium Ion Batteries Temperature is a major factor affecting lithium-ion batteries (LIB) performances including power, energy and life. Energy density vs. power density (E(P)) charts known as “Ragone plots” are convenient charts for comparing the performance of energy storage systems (ESS) such as batteries, supercapacitors, fuel cells, flywheels, hydrogen and gasoline. Basically, Ragone plots allow one to determine the amount of energy E (Wh kg−1 and Wh l−1) an ESS may deliver under a constant power load P (W kg−1 and W l−1). In this study Ragone charts are achieved on commercial LIB cells at temperatures ranging from −20°C to + 55°C. Cells are first charged using CCCV protocol at C/10 up to 4.2 V at the ambient temperatures (∼25°C). Then cells are discharged isothermally at constant rates ranging from C/5 to 10 C. To account for varying power and temperature Ragone isotherms are integrated over the power range yielding a functional Integrated Energy-Power (∫PE(P)dP∣T−−−−−−−−−−−√2). The ratio of integrated areas at T and at 25°C gives the “Energy-Power Index” (EPI) (%). The EPI vs. T profile shows a linear increase between −10°C and 25°C then it makes a semi-plateau between 25°C and 55°C. Published version 2018-07-30T03:07:19Z 2019-12-06T16:03:41Z 2018-07-30T03:07:19Z 2019-12-06T16:03:41Z 2018 Journal Article Kumar, S. K., Abduh, A. A. B. M., Sabih, O., & Yazami, R. (2018). Temperature Effect on “Ragone Plots” of Lithium-Ion Batteries. Journal of The Electrochemical Society, 165(3), A674-A679. 0013-4651 https://hdl.handle.net/10356/85433 http://hdl.handle.net/10220/45347 10.1149/2.0591803jes en Journal of The Electrochemical Society 6 p. application/pdf |
| spellingShingle | Ragone Plots Lithium Ion Batteries Kumar, S. Krishna Abduh, Audy A. B. M. Sabih, Othmane Yazami, Rachid Temperature effect on “Ragone Plots” of lithium-ion batteries |
| title | Temperature effect on “Ragone Plots” of lithium-ion batteries |
| title_full | Temperature effect on “Ragone Plots” of lithium-ion batteries |
| title_fullStr | Temperature effect on “Ragone Plots” of lithium-ion batteries |
| title_full_unstemmed | Temperature effect on “Ragone Plots” of lithium-ion batteries |
| title_short | Temperature effect on “Ragone Plots” of lithium-ion batteries |
| title_sort | temperature effect on ragone plots of lithium ion batteries |
| topic | Ragone Plots Lithium Ion Batteries |
| url | https://hdl.handle.net/10356/85433 http://hdl.handle.net/10220/45347 |
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