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OCV Hysteresis in Li-Ion Batteries including Two-Phase Transition Materials
المؤلفون المشاركون
Roscher, Michael A.
Bohlen, Oliver
Vetter, Jens
المصدر
International Journal of Electrochemistry
العدد
المجلد 2011، العدد 2011 (31 ديسمبر/كانون الأول 2011)، ص ص. 1-6، 6ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2011-05-29
دولة النشر
مصر
عدد الصفحات
6
التخصصات الرئيسية
الملخص EN
The relation between batteries' state of charge (SOC) and open-circuit voltage (OCV) is a specific feature of electrochemical energy storage devices.
Especially NiMH batteries are well known to exhibit OCV hysteresis, and also several kinds of lithium-ion batteries show OCV hysteresis, which can be critical for reliable state estimation issues.
Electrode potential hysteresis is known to result from thermodynamical entropic effects, mechanical stress, and microscopic distortions within the active electrode materials which perform a two-phase transition during lithium insertion/extraction.
Hence, some Li-ion cells including two-phase transition active materials show pronounced hysteresis referring to their open-circuit voltage.
This work points out how macroscopic effects, that is, diffusion limitations, superimpose the latte- mentioned microscopic mechanisms and lead to a shrinkage of OCV hysteresis, if cells are loaded with high current rates.
To validate the mentioned interaction, Li-ion cells' state of charge is adjusted to 50% with various current rates, beginning from the fully charged and the discharged state, respectively.
As a pronounced difference remains between the OCV after charge and discharge adjustment, obviously the hysteresis vanishes as the target SOC is adjusted with very high current rate.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Roscher, Michael A.& Bohlen, Oliver& Vetter, Jens. 2011. OCV Hysteresis in Li-Ion Batteries including Two-Phase Transition Materials. International Journal of Electrochemistry،Vol. 2011, no. 2011, pp.1-6.
https://search.emarefa.net/detail/BIM-513584
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Roscher, Michael A.…[et al.]. OCV Hysteresis in Li-Ion Batteries including Two-Phase Transition Materials. International Journal of Electrochemistry No. 2011 (2011), pp.1-6.
https://search.emarefa.net/detail/BIM-513584
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Roscher, Michael A.& Bohlen, Oliver& Vetter, Jens. OCV Hysteresis in Li-Ion Batteries including Two-Phase Transition Materials. International Journal of Electrochemistry. 2011. Vol. 2011, no. 2011, pp.1-6.
https://search.emarefa.net/detail/BIM-513584
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-513584
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