Decreasing redox voltage of terephthalate-based electrode material for Li-ion battery using substituent effect

A.E. Lakraychi (1, 2, 3) , F. Dolhem (2, 3) , F. Djedaïni-Pilard (2) , A. Thiam (1, 3) , C. Frayret (1) , Matthieu Becuwe (1, 3)

1 LRCS - Laboratoire réactivité et chimie des solides - UMR CNRS 7314 UPJV
2 LG2A - Laboratoire de Glycochimie, des Antimicrobiens et des Agro-ressources - UMR CNRS 7378
3 RS2E - Réseau sur le stockage électrochimique de l'énergie

The preparation and assessment versus lithium of a functionalized terephthalate-based as a potential new negative electrode material for Li-ion battery is presented. Inspired from molecular modelling, a decrease in redox potential is achieved through the symmetrical adjunction of electron-donating fragments (–CH3) on the aromatic ring. While the electrochemical activity of this organic material was maximized when used as nanocomposite and without any binder, the potential is furthermore lowered by 110 mV upon functionalization, consistently with predicted value gained from DFT calculations.

Domaines: Physique [physics]

A.E. Lakraychi, F. Dolhem, F. Djedaïni-Pilard, A. Thiam, C. Frayret, et al.. Decreasing redox voltage of terephthalate-based electrode material for Li-ion battery using substituent effect. Journal of Power Sources, 2017, 359, pp.198-204. ⟨10.1016/j.jpowsour.2017.05.046⟩. ⟨hal-02948087⟩