Extracting the diffusion resistance and dynamic of a battery using pulse tests

Juston, Maxime; Damay, Nicolas; Forgez, Christophe

doi:10.1016/j.est.2022.106199

Cited by 7 publications

(5 citation statements)

References 25 publications

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“…The ion diffusion coefficient of High SOH NCM and C‐NCM are both 10 –10 –10 –11 cm 2 s −1 , with High SOH NCM slightly higher than C‐NCM. [ 30,31 ] These results demonstrate that the electrochemical properties of the regenerated NCM are well‐recovered and comparable to those of commercial NCM materials. In summary, conventional and merely eutectic salt regeneration can effectively promote the capacity of Low SOH NCM, but it exhibits poor cycle stability.…”

Section: Resultsmentioning

confidence: 59%

Organic Eutectic Salts‐Assisted Direct Lithium Regeneration for Extremely Low State of Health Ni‐Rich Cathodes

Liu,

Wang,

Liu

et al. 2023

Advanced Energy Materials

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Currently, the concept of direct regeneration has garnered considerable attention from the public due to its minimal environmental impact, high economic value, and stable performance of recycled materials. In this study, an organic lithium salt‐assisted eutectic salts direct regeneration (OAER) is proposed for replenishing lithium in an extremely low state of health Ni‐rich cathode (Low SOH NCM). The OAER method capitalizes on the favorable inherent properties of eutectic salts; moreover, the reactions of organic lithium salt create an oxidation environment and vacancies. By employing OAER, Low SOH NCM are able to be recovered, which originally has a capacity of only 46.8 mAh g−1, to 155.5 mAh g−1 with a capacity retention of 95.6% after 100 cycles. Notably, this performance is substantially higher than that achieved through conventional and purely eutectic salt regeneration methods and even slightly surpasses the current commercial NCM material. Considering the economic and environmental benefits of the OAER approach, it demonstrates potential for direct regeneration of Low SOH NCM and exhibits competitiveness for industrial applications.

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Section: Resultsmentioning

confidence: 59%

Organic Eutectic Salts‐Assisted Direct Lithium Regeneration for Extremely Low State of Health Ni‐Rich Cathodes

Liu,

Wang,

Liu

et al. 2023

Advanced Energy Materials

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“…12 Both aging modes are mostly described by capacity fade, the state of health (SoH) decrease, and resistance increaseeither during storing (calendar aging) or usage realized by cycling (cyclic aging). 34 Resistance increase is often correlated with increasing ionic and/or electronic resistance, e.g., caused by SEI and cathode electrolyte interphase (CEI) growth, increased diffusion resistance as a result of higher cation concentration, 35 capacity fade with loss of lithium inventory (LLI), loss of active material, 36 electrolyte decomposition during long term cycling with a large amount of salt decomposition being detected, 37 gas formation due to SEI growth, etc.…”

Section: Methodsmentioning

confidence: 99%

Performance Changes of Lithium-Ion-Batteries due to Electrolyte-Introduced Metal Oxalate Contaminants

Rollin,

Wang,

Novák

et al. 2024

J. Electrochem. Soc.

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This work highlights how different metal oxalates (lithium, nickel, cobalt, manganese, aluminum, and copper) as possible contaminants from certain recycling technologies impact calendar and cyclic aging of NMC811 based LIBs. It also outlines the differences between their two aging modes. By comparing calendar and cyclic aging, differences become apparent: E.g., the presence of copper oxalate resulted in reduced calendar aging effects, while aluminum oxalate negatively affected calendar aging performance but cyclic aging less. Our method is also suitable for screening other materials, especially if one of the aging modes appears more important. By adding lithium oxalate to LIBs, overcharges strongly affected the SoH during cyclic aging. To optimize recycling performance by evaluating the impact of potential impurities, special attention should be given to particularly aluminum and, if economically viable, eliminated.

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“…Open circuit voltage is the voltage of the battery at rest. It is measured using either a low current rate or a sequence of partial current or voltage charges and discharges to vary the state of charge [48,49]. In the latter technique, charges and discharges are followed by a rest period of a few hours before voltage measurement.…”

Section: What Type Of Electrical Tests Are Conducted?mentioning

confidence: 99%

Lithium–Ion Battery Data: From Production to Prediction

2023

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In our increasingly electrified society, lithium–ion batteries are a key element. To design, monitor or optimise these systems, data play a central role and are gaining increasing interest. This article is a review of data in the battery field. The authors are experimentalists who aim to provide a comprehensive overview of battery data. From data generation to the most advanced analysis techniques, this article addresses the concepts, tools and challenges related to battery informatics with a holistic approach. The different types of data production techniques are described and the most commonly used analysis methods are presented. The cost of data production and the heterogeneity of data production and analysis methods are presented as major challenges for the development of data-driven methods in this field. By providing an understandable description of battery data and their limitations, the authors aim to bridge the gap between battery experimentalists, modellers and data scientists. As a perspective, open science practices are presented as a key approach to reduce the impact of data heterogeneity and to facilitate the collaboration between battery scientists from different institutions and different branches of science.

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Extracting the diffusion resistance and dynamic of a battery using pulse tests

Cited by 7 publications

References 25 publications

Organic Eutectic Salts‐Assisted Direct Lithium Regeneration for Extremely Low State of Health Ni‐Rich Cathodes

Organic Eutectic Salts‐Assisted Direct Lithium Regeneration for Extremely Low State of Health Ni‐Rich Cathodes

Performance Changes of Lithium-Ion-Batteries due to Electrolyte-Introduced Metal Oxalate Contaminants

Lithium–Ion Battery Data: From Production to Prediction

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