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...

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Main Authors: Kumar, S. Krishna, Abduh, Audy A. B. M., Sabih, Othmane, Yazami, Rachid
Other Authors: Energy Research Institute @ NTU (ERI@N)
Format: Article
Language:English
Published: 2018
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Online Access:https://hdl.handle.net/10356/85433
http://hdl.handle.net/10220/45347
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Institution: Nanyang Technological University
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spelling sg-ntu-dr.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
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Ragone Plots
Lithium Ion Batteries
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
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.
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
format Article
author Kumar, S. Krishna
Abduh, Audy A. B. M.
Sabih, Othmane
Yazami, Rachid
author_sort Kumar, S. Krishna
title Temperature effect on “Ragone Plots” of lithium-ion batteries
title_short 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_sort temperature effect on “ragone plots” of lithium-ion batteries
publishDate 2018
url https://hdl.handle.net/10356/85433
http://hdl.handle.net/10220/45347
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