CE05 - Une énergie durable, propre, sûre et efficace

Greatly augmented novel Li-ion devices by atomic layer fluorination – GANDALF

Submission summary

GANDALF aims at modifying the surface of positive electrodes (LiFexMn1-xPO4 (LFMP) and LiNi0.5Mn1.5O4 (LNMO)) of Li-ion devices by a novel atomic layer fluorination process, improving their inertness towards their electrolytic environment, augmenting their performances as high-voltage systems, and validating their use as real-life size SAFT prototypes. Through a PhD funded by the RS2E, we could study our novel atomic layer fluorination process, so-called ALF, on TiO2, Li4Ti5O12 (LTO), LiCoO2 (LCO), and Li(Ni0.80Co0.15Al0.05)O2 (NCA). For each system, we demonstrate that ALF-electrodes display improved cyclability, polarization, and cycle life. Electrochemical operando FTIR measurements show that ALF-NCA is relatively inert towards its electrolyte, as compared to pristine NCA. Encouraged by the ANR, we were advised to build this project as PRCE in order to reach the industrial validation.

Project coordination

Nicolas Louvain (Institut de chimie moléculaire et des matériaux - Institut Charles Gerhardt Montpellier)

The author of this summary is the project coordinator, who is responsible for the content of this summary. The ANR declines any responsibility as for its contents.

Partner

ICCF Institut de Chimie de Clermont-Ferrand
IPREM INSTITUT DES SCIENCES ANALYTIQUES ET DE PHYSICO-CHIMIE POUR L'ENVIRONNEMENT ET LES MATERIAUX
SAFT SAFT
ICGM Institut de chimie moléculaire et des matériaux - Institut Charles Gerhardt Montpellier

Help of the ANR 630,439 euros
Beginning and duration of the scientific project: January 2021 - 42 Months

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