| Issue |
E3S Web Conf.
Volume 16, 2017
11th European Space Power Conference
|
|
|---|---|---|
| Article Number | 17002 | |
| Number of page(s) | 5 | |
| Section | Energy Storage Posters | |
| DOI | https://doi.org/10.1051/e3sconf/20171617002 | |
| Published online | 23 May 2017 | |
Advanced Carbon Fluorides For Primary Lithium Batteries
1 Université Clermont Auvergne, Université Blaise Pascal, Institut de Chimie de Clermont-Ferrand, BP 10448, F-63000 CLERMONT-FERRAND, France
2 CNRS, UMR 6296, ICCF, F-63171 Aubière, France
Diane.Delbegue@univ-bpclermont.fr
Li-CFx battery using a specific fluorinated nanocarbon as cathode material exhibits a capacity exceeding the expected theoretical value when used as an electrode material in primary lithium battery. Carbon nanodiscs were partially fluorinated by atomic fluorine released by thermal decomposition of TbF4, and the capacity of this material was up to 1180 mAh.g−1, whereas a theoretical value of 847 mAh.g−1 for the CF0.95 sample was calculated. The obtained value is also higher than the maximum one of 865 mAh.g−1 expected for CF1 carbon fluorides. The discharge mechanism was investigated using mainly SEM and solid state NMR in order to understand this “extracapacity”. Both the unfluorinated carbon and the LiF covering, which is formed outside the carbon lattice during the discharge mechanism, play a key role for the achievement of the extracapacity by the consumption of Li+ to form Li2F+ species stabilized by the carbon host structure formed after the electrochemical defluorination.
© The Authors, published by EDP Sciences, 2017
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.