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Article Dans Une Revue Small Année : 2023

Toward Conductive Additive Free Organic Electrode for Lithium‐Ion Battery Using Supramolecular Columnar Organization

Serge Pilard
David Mathiron
Dominique Cailleu
  • Fonction : Auteur
  • PersonId : 1155701
  • IdRef : 120116057

Résumé

With the aim to meet the greatest challenge facing organic batteries, namely the low conductivity of the electrodes, the electrochemical properties of a series of substituted perylene diimides able to form semi‐conductive columnar material are investigated. Depending on the substituent group, a strong influence of this group on the reversibility, redox potential but especially on the gravimetric capacity of the electrodes is observed. In the case of substitution by a simple propyl group, the corresponding diimide shows a complete electrochemical activity with only 10% by mass of conductive additive and even shows a half‐capacity activity without any additive and without particular electrode engineering. Extensive research has highlighted the intrinsic reactivity of the columnar material but also its perpetual rearrangement during charge/discharge cycles. This study shows that the amount of conductive additive can be significantly reduced by adapting the design of the molecular material and favoring the assembly of redox units in the form of a conductive column.

Domaines

Matériaux
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Dates et versions

hal-04214106 , version 1 (21-09-2023)

Identifiants

Citer

Vincent Pignier, Sylvestre Toumieux, Carine Davoisne, Maxandre Caroff, Arash Jamali, et al.. Toward Conductive Additive Free Organic Electrode for Lithium‐Ion Battery Using Supramolecular Columnar Organization. Small, 2023, pp.2305701. ⟨10.1002/smll.202305701⟩. ⟨hal-04214106⟩
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