Chemically controlled protective film based on biphenyl derivatives for high potential lithium battery

F. Alloin (1) , O. El Tall (1) , J.C Leprêtre (1) , L. Cointeaux (1) , L. Boutafa (2) , J. Guindet (1) , J.-F. Martin (2)

1 LEPMI - Laboratoire d'Electrochimie et de Physico-chimie des Matériaux et des Interfaces
2 LITEN - Laboratoire d'Innovation pour les Technologies des Energies Nouvelles et les nanomatériaux

High potential cathodes are of strong interest to improve lithium-ion battery performances, nevertheless, no compatible electrolyte above 4.5–4.8 V vs Li+/Li was found yet. The main strategies involved the use of protective film inhibiting and/or delaying electrolyte degradation. In this context, we focused on the use of adapted modified biphenyls to form a protective film at the positive electrode. Particularly phosphate biphenyl derivatives oxidation permits to produce a protective film which significantly decreases the self-discharge without compromising the lithium intercalation kinetic.

Mots clés: Additive; Electrochemistry; Lithium ion-battery; Protective film

Domaines: Chimie

F. Alloin, O. El Tall, J.C Leprêtre, L. Cointeaux, L. Boutafa, et al.. Chemically controlled protective film based on biphenyl derivatives for high potential lithium battery. Electrochimica Acta, 2013, 112, pp.74 - 81. ⟨10.1016/j.electacta.2013.08.113⟩. ⟨hal-01884278⟩