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Tambio, S. J., Roberge, H., Xiong, J., Soudan, P., Besnard, N. & Lestriez, B. (2021) Charge Transport Limitations to the Power Performance of LiNi0.5Mn0.3Co0.2O2 Composite Electrodes with Carbon Nanotubes. J. Electrochem. Soc. 168 110508. 
Added by: Richard Baschera (2021-11-18 09:58:50)   Last edited by: Richard Baschera (2021-11-18 10:00:20)
Type de référence: Article
DOI: 10.1149/1945-7111/ac334c
Numéro d'identification (ISBN etc.): 1945-7111
Clé BibTeX: Tambio2021
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Catégories: PMN, ST2E
Créateurs: Besnard, Lestriez, Roberge, Soudan, Tambio, Xiong
Collection: J. Electrochem. Soc.
Consultations : 18/106
Indice de consultation : 15%
Indice de popularité : 3.75%
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The power performance of EV-designed LiNi0.5Mn0.3Co0.2O2 (NMC 532)/PVdF/CB-CNT based electrodes with 25−2 active mass loading, 3.4−3 density, 23.5% porosity and 96:1.8:2.2 wt% composition, were measured at 0 °C, 22 °C and 40 °C. The CB/CNTs ratio is 100:0 or 50:50 v%. The polarization resistance and the discharge capacity are improved by using the CB-CNTs blend especially at 0 °C and 40 °C. The shape factor of the CNTs favor the electronic wiring of the active mass at 0 °C by forming conductive bridges over the resistive grain boundaries at the surface of NMC clusters. At 40 °C, the CNTs favor both the electronic and the ionic wirings of the active mass. At this temperature, the swelling of the CB/PVdF domains could be responsible for the degradation of the electrons transfer and ions transport through the electrode. This detrimental phenomenon is mitigated with the CB/CNTs blend likely due to the CNTs shape factor.
Publisher: The Electrochemical Society
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