Discrimination of degradation processes in lithium-ion cells based on the sensitivity of aging indicators towards capacity loss

Bauer, Marius; Guenther, Clemens; Kasper, Michael; Petzl, Mathias; Danzer, Michael A.

doi:10.1016/j.jpowsour.2015.02.130

Cited by 29 publications

(26 citation statements)

References 24 publications

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“…formation and reconstruction of SEI. 20 A higher capacity fade rate at 10 • C than at 25 • C is possibly a result of lithium plating, 7,8 since internal electrode resistances increase with lower temperature and the anode potential eventually drops to potentials negative to reversible Li/Li + potential. 23 The ohmic resistance originates from the bulk chemistry of a cell, including resistance of the electrolyte, active materials and current collectors.…”

Section: Resultsmentioning

confidence: 99%

“…The semi-circle at higher frequencies stays unchanged at 10 • C and 25 • C and increases gradually at 40 • C. This confirms an intensified SEI growth at higher temperature, which has also been reported by other research groups. 8,[41][42][43][44] The temperature dependency of the SEI growth is comprehensible, since the SEI growth comprises chemical reactions, like electrolyte decomposition and organic/inorganic compounds formation, which can be accelerated by high temperature. 45,46 The semi-circle at medium frequencies increases enormously after 850 cycles at 10 • C. In the cases of 25 • C and 40 • C, the semi-circles at medium frequencies both increase steadily and 40 • C show a faster increase.…”

Section: Resultsmentioning

confidence: 99%

“…As shown by other research work, the optimal cycling temperature can differ from 25 • C. It varies with the cell type. Schuster et al 5 reported the optimum to be at 35 • C, whereas Bauer et al 8 detected it to be around 17 • C. Temperatures higher than the optimum contribute to an accelerated solid electrolyte interphase (SEI) formation, thus a more rapid capacity fade and impedance rise. Lower temperatures favor lithium plating at the end of the charging process.…”

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confidence: 99%

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Impact of Temperature and Discharge Rate on the Aging of a LiCoO₂/LiNi_0.8Co_0.15Al_0.05O₂Lithium-Ion Pouch Cell

Keil

Schuster

et al. 2017

J. Electrochem. Soc.

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This paper presents a lithium-ion battery aging study in which pouch cells comprising a LiCoO 2 /LiNi 0.8 Co 0.15 Al 0.05 O 2 blended cathode and a graphite anode are examined. The study focuses on the impact of temperature and discharge rate on the cycle life of the tested cells. Compared to the aging behavior of other lithium-ion cells in the literature, the cells tested here are less sensitive to the discharge rate but more vulnerable to low temperature cycling. The vulnerability to low temperature mainly comes from cathode degradation, especially of the LiCoO 2 component. This is identified by electrochemical impedance spectroscopy, differential voltage analysis and incremental capacity analysis. The cells are able to achieve 3000-5000 cycles before reaching a capacity fade of 20%, also at higher discharge rates up to 5C. All in all, the high discharge rate capability could be a general advantage of pouch cells due to less mechanical and thermal stress in their geometry. Furthermore, more attention should be paid to the cathode health in low temperature applications of lithium-ion cells containing layered oxides. This paper focuses mainly on non-invasive aging detection methods for lithium-ion cells. Post-mortem results will be published in a following paper.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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confidence: 99%

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Impact of Temperature and Discharge Rate on the Aging of a LiCoO₂/LiNi_0.8Co_0.15Al_0.05O₂Lithium-Ion Pouch Cell

Keil

Schuster

et al. 2017

J. Electrochem. Soc.

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“…Performing a sensitivity analysis on the cell-specific aging process is a promising method to resolve this issue (Figure 1c). Different approaches using sensitivity analyses in the process of aging modeling can be found in [32][33][34][35][36]. Bauer et al [32] focus on the investigation of the interrelations between the aging effects ∆C and ∆R as well as loss in power capability during cyclic aging.…”

Section: Sensitivity Analysis As An Essential Stepmentioning

confidence: 99%

Accelerated Aging Characterization of Lithium-ion Cells: Using Sensitivity Analysis to Identify the Stress Factors Relevant to Cyclic Aging

et al. 2020

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As storage technology in electric vehicles, lithium-ion cells are subject to a continuous aging process during their service life that, in the worst case, can lead to a premature system failure. Battery manufacturers thus have an interest in the aging prediction during the early design phase, for which semi-empirical aging models are often used. The progress of aging is dependent on the application-specific load profile, more precisely on the aging-relevant stress factors. Still, a literature review reveals a controversy on the aging-relevant stress factors to use as input parameters for the simulation models. It shows that, at present, a systematic and efficient procedure for stress factor selection is missing, as the aging characteristic is cell-specific. In this study, an accelerated sensitivity analysis as a prior step to aging modeling is proposed, which is transferable and allows to determine the actual aging-relevant stress factors for a specific lithium-ion cell. For the assessment of this accelerated approach, two test series with different acceleration levels and cell types are performed and evaluated. The results show that a certain amount of charge throughput, 100 equivalent full cycles in this case, is necessary to conduct a statistically significant sensitivity analysis.

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“…The CD process can be repeated several times to identify the cycle performance and can also be used to observe the degradation behaviour. Changes in the impedance spectra are also related to the battery degradation . Unfortunately, few studies have been carried out on the electrochemical impedance in order to examine the detailed differences in the impedance spectra before cycling (13 Ω) compared with after cycling (883 Ω) .…”

Section: Introductionmentioning

confidence: 99%

Degradation of LiCoO₂in aqueous lithium-air batteries

Aziz

Cunha

Abdullah

et al. 2016

Int. J. Energy Res.

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Summary The degradation behaviour of aqueous rechargeable lithium cobalt oxide–air batteries in 5 M LiNO3 aqueous solution is observed by electrochemical characterizations. At lower scan rates of cyclic voltammetry, the three pairs of redox peaks at ESCE = 0.79/0.67, 0.89/0.85 and 1.15/0.97 V are proven to produce good reversibility. The small separation of the peaks is proportionally consistent with the Li+ diffusion coefficients of 2.82 × 10−7 cm2 s−1 (anodic) and 1.76 × 10−7 cm2 s−1 (cathodic). The lithium cobalt oxide–air batteries have a higher initial specific discharge capacity of 114.35 mA h g−1, which fades to 83% (after the first 10 cycles) and 52% (after 50 cycles). As the specific discharge capacity decreases, the resistance increases. The dissolution of Li+ is mainly attributed to these degradations. Further analyses of the batteries' degradation are performed by morphological and structural characterizations of the cathode material. Copyright © 2016 John Wiley & Sons, Ltd.

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Discrimination of degradation processes in lithium-ion cells based on the sensitivity of aging indicators towards capacity loss

Cited by 29 publications

References 24 publications

Impact of Temperature and Discharge Rate on the Aging of a LiCoO₂/LiNi_0.8Co_0.15Al_0.05O₂Lithium-Ion Pouch Cell

Impact of Temperature and Discharge Rate on the Aging of a LiCoO₂/LiNi_0.8Co_0.15Al_0.05O₂Lithium-Ion Pouch Cell

Accelerated Aging Characterization of Lithium-ion Cells: Using Sensitivity Analysis to Identify the Stress Factors Relevant to Cyclic Aging

Degradation of LiCoO₂in aqueous lithium-air batteries

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Discrimination of degradation processes in lithium-ion cells based on the sensitivity of aging indicators towards capacity loss

Cited by 29 publications

References 24 publications

Impact of Temperature and Discharge Rate on the Aging of a LiCoO2/LiNi0.8Co0.15Al0.05O2Lithium-Ion Pouch Cell

Impact of Temperature and Discharge Rate on the Aging of a LiCoO2/LiNi0.8Co0.15Al0.05O2Lithium-Ion Pouch Cell

Accelerated Aging Characterization of Lithium-ion Cells: Using Sensitivity Analysis to Identify the Stress Factors Relevant to Cyclic Aging

Degradation of LiCoO2in aqueous lithium-air batteries

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Product

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About

Impact of Temperature and Discharge Rate on the Aging of a LiCoO₂/LiNi_0.8Co_0.15Al_0.05O₂Lithium-Ion Pouch Cell

Impact of Temperature and Discharge Rate on the Aging of a LiCoO₂/LiNi_0.8Co_0.15Al_0.05O₂Lithium-Ion Pouch Cell

Degradation of LiCoO₂in aqueous lithium-air batteries