Conditions Extrêmes et Matériaux : Haute Température et Irradiation
CEMHTI - UPR3079 CNRS
utilisateur non identifié |
Login
Home
Directory
Publications
Research
Facilities
Jobs - News
Access
Past members
CERAM - M.Allix
DEFIR - P.Desgardin
MatRMag - V.Montouillout
NAFMAT - C.Ania
OR2T - O.Rozenbaum
Common Actions
High-Temperatures Facility
Particles Beams Facilities
Vibr. Spectroscopies and Planex
NMR Facility
Softwares
National and European Facilities
all the instruments
Pelletron
Positons
Performances
IBA Techniques
Implantation and Irradiation
IR-RMN in Infranalytics
PANACEA Eu
850 MHz
Diffusion
NMR
dmfit NMR
focus (IR Optics)
Levitation
Electron Microscope
XRay and Neutrons
NMR
IR emission
RAMAN
Accelerators
RAMAN in situ
RAMAN high temp.
RAMAN imaging
News@CEMHTI
Jobs@CEMHTI
Seminars@CEMHTI
View CEMHTI Publication
Return to publication search...
Ask for a reprint
email :
I am not a bot ;-)
* Give your email
2020
ACL
doi
S.J.Tambio, N.Besnard, M.Deschamps, B.Lestriez
,
'Charge Transport Limitations to the Power Performance of LiNi0.5Mn0.3Co0.2O2 Composite Electrodes with Carbon Nanotubes'
, ECS Transactions 97(7) 89-100 (2020) doi:
10.1149/09707.0089ecst
Electrode power performance is tied with electrode design that influences particularly the electronic wiring of the active mass and the speed of lithium salt diffusion in the pores. Improved capacity delivery, especially at 0 and 40°C was seen for NMC532 electrodes containing carbon nanotubes (CNTs) comparatively to carbon black (CB). At low temperature CNTs significantly increase the electrode conductivity as seen from the decrease of the polarization resistance. Furthermore, the analysis of the current density dependence of the discharge capacity with the Penetration Depth Model (PDM) reveal that the CNTs improve the ionic transport at high temperature because they would minimize the effect of the PVdF swelling by the electrolyte and the resulting increase of the electrode porosity.