Effect of Current Rate and Prior Cycling on the Coulombic Efficiency of a Lithium-Ion Battery

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Abstract

The determination of coulombic efficiency of the lithium-ion batteries can contribute to comprehend better their degradation behavior. In this research, the coulombic efficiency and capacity loss of three lithium-ion batteries at different current rates (C) were investigated. Two new battery cells were discharged and charged at 0.4 C and 0.8 C for twenty times to monitor the variations in the aging and coulombic efficiency of the battery cell. In addition, prior cycling was applied to the third battery cell which consist of charging and discharging with 0.2 C, 0.4 C, 0.6 C, and 0.8 C current rates and each of them twenty times. The coulombic efficiency of the new battery cells was compared with the cycled one. The experiments demonstrated that approximately all the charge that was stored in the battery cell was extracted out of the battery cell, even at the bigger charging and discharging currents. The average capacity loss rates for discharge and charge during 0.8 C were approximately 0.44% and 0.45% per cycle, correspondingly.
Original languageEnglish
JournalBatteries
Volume5
Issue number3
Number of pages9
ISSN2313-0105
DOIs
Publication statusPublished - Aug 2019

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Aging of materials
Degradation
Lithium-ion batteries
Experiments

Keywords

  • Lithium-ion batteries
  • Coulombic efficiency
  • Capacity loss

Cite this

@article{6f8a7983fd4d4d82b7fd18c597d6e7f5,
title = "Effect of Current Rate and Prior Cycling on the Coulombic Efficiency of a Lithium-Ion Battery",
abstract = "The determination of coulombic efficiency of the lithium-ion batteries can contribute to comprehend better their degradation behavior. In this research, the coulombic efficiency and capacity loss of three lithium-ion batteries at different current rates (C) were investigated. Two new battery cells were discharged and charged at 0.4 C and 0.8 C for twenty times to monitor the variations in the aging and coulombic efficiency of the battery cell. In addition, prior cycling was applied to the third battery cell which consist of charging and discharging with 0.2 C, 0.4 C, 0.6 C, and 0.8 C current rates and each of them twenty times. The coulombic efficiency of the new battery cells was compared with the cycled one. The experiments demonstrated that approximately all the charge that was stored in the battery cell was extracted out of the battery cell, even at the bigger charging and discharging currents. The average capacity loss rates for discharge and charge during 0.8 C were approximately 0.44{\%} and 0.45{\%} per cycle, correspondingly.",
keywords = "Lithium-ion batteries, Coulombic efficiency, Capacity loss",
author = "Madani, {Seyed Saeed} and Erik Schaltz and K{\ae}r, {S{\o}ren Knudsen}",
year = "2019",
month = "8",
doi = "10.3390/batteries5030057",
language = "English",
volume = "5",
journal = "Batteries",
issn = "2313-0105",
publisher = "MDPI",
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}

Effect of Current Rate and Prior Cycling on the Coulombic Efficiency of a Lithium-Ion Battery. / Madani, Seyed Saeed; Schaltz, Erik; Kær, Søren Knudsen.

In: Batteries, Vol. 5, No. 3, 08.2019.

Research output: Contribution to journalJournal articleResearchpeer-review

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T1 - Effect of Current Rate and Prior Cycling on the Coulombic Efficiency of a Lithium-Ion Battery

AU - Madani, Seyed Saeed

AU - Schaltz, Erik

AU - Kær, Søren Knudsen

PY - 2019/8

Y1 - 2019/8

N2 - The determination of coulombic efficiency of the lithium-ion batteries can contribute to comprehend better their degradation behavior. In this research, the coulombic efficiency and capacity loss of three lithium-ion batteries at different current rates (C) were investigated. Two new battery cells were discharged and charged at 0.4 C and 0.8 C for twenty times to monitor the variations in the aging and coulombic efficiency of the battery cell. In addition, prior cycling was applied to the third battery cell which consist of charging and discharging with 0.2 C, 0.4 C, 0.6 C, and 0.8 C current rates and each of them twenty times. The coulombic efficiency of the new battery cells was compared with the cycled one. The experiments demonstrated that approximately all the charge that was stored in the battery cell was extracted out of the battery cell, even at the bigger charging and discharging currents. The average capacity loss rates for discharge and charge during 0.8 C were approximately 0.44% and 0.45% per cycle, correspondingly.

AB - The determination of coulombic efficiency of the lithium-ion batteries can contribute to comprehend better their degradation behavior. In this research, the coulombic efficiency and capacity loss of three lithium-ion batteries at different current rates (C) were investigated. Two new battery cells were discharged and charged at 0.4 C and 0.8 C for twenty times to monitor the variations in the aging and coulombic efficiency of the battery cell. In addition, prior cycling was applied to the third battery cell which consist of charging and discharging with 0.2 C, 0.4 C, 0.6 C, and 0.8 C current rates and each of them twenty times. The coulombic efficiency of the new battery cells was compared with the cycled one. The experiments demonstrated that approximately all the charge that was stored in the battery cell was extracted out of the battery cell, even at the bigger charging and discharging currents. The average capacity loss rates for discharge and charge during 0.8 C were approximately 0.44% and 0.45% per cycle, correspondingly.

KW - Lithium-ion batteries

KW - Coulombic efficiency

KW - Capacity loss

U2 - 10.3390/batteries5030057

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