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High energy density of primary lithium batteries working with sub-fluorinated few walled carbon nanotubes cathode

Ahmad, Yasser and Dubois, Marc and Guerin, Katia and Hamwi, André and Flahaut, Emmanuel High energy density of primary lithium batteries working with sub-fluorinated few walled carbon nanotubes cathode. (2017) Journal of Alloys and Compounds, 726. 852-859. ISSN 0925-8388

(Document in English)

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Official URL: http://dx.doi.org/10.1016/j.jallcom.2017.08.001


Fluorinated carbon nanotubes used as cathode material exhibit a capacity exceeding the theoretical value when used in primary lithium battery. The measured experimental capacity, the faradic yield and the energy density were increased, exceeding the expected theoretical values for sub-fluorinated few walled carbon nanotubes (FWCNTs).Although the molar carbon/fluorine ratio was only of 0.37 (i.e CF0.37), an experimental capacity of 900 mAh.g−1 was obtained which is higher than the theoretical value of 521 mAh.g−1. With the same material, an unprecedented energy density of 2565 Wh kg−1 was reached associated with a faradic yield of 172%. The materials were deeply characterized using TEM, Raman and solid state 13C and 19F NMR in order to explain the extra-capacity. Such high electrochemical values can be correlated to the reinforcement effect of the central tube(s), coupled with a low amount of structural defects.

Item Type:Article
Additional Information:Thanks to Elsevier editor. The original PDF of the article can be found at : https://www.sciencedirect.com/science/article/pii/S0925838817327299
HAL Id:hal-01639477
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Université de Toulouse > Institut National des Sciences Appliquées de Toulouse - INSA (FRANCE)
Université de Toulouse > Institut Supérieur de l'Aéronautique et de l'Espace - ISAE-SUPAERO (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
Other partners > SIGMA Clermont (FRANCE)
Laboratory name:
Deposited On:12 Mar 2018 10:47

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