Exfoliation-induced nanoribbon formation of poly(3,4-ethylene dioxythiophene) PEDOT between MoS2 layers as cathode material for lithium batteries

A. Vadivel Murugan (1) , Mathieu Quintin (2) , Marie-Hélène Delville (2) , Guy Campet (2) , Chinnakonda S. Gopinath (3) , K. Vijayamohanan (3)

1 C-MET - Centre for Materials for Electronics Technology
2 ICMCB - Institut de Chimie de la Matière Condensée de Bordeaux
3 Catalysis Division

A new type of layered nanocomposite synthesized by delaminated MoS2 nanosheets and poly(3,4-ethylenedioxythiophene) (PEDOT) are restacked to produce alternate polymer nanoribbons between layers of MoS2 with an interlayer distance of ∼1.38 nm. The unique properties of resulting nanocomposite are investigated by powder XRD, XPS, SEM, TEM, and four-probe conductivity measurements. The obtained nanocomposite can be used as a cathode material for a small power rechargeable lithium battery as demonstrated by the electrochemical insertion of lithium into the PEDOT/MoS2 nanocomposite. A significant enhancement in the discharge capacity (100 mAh g−1) is observed compared with that (40 mAh g−1) for MoS2.

Mots clés: Organic–inorganic nanocomposite; PEDOT-nanoribbons; MoS2; Cathode material; Lithium batteries

Domaines: Matériaux

A. Vadivel Murugan, Mathieu Quintin, Marie-Hélène Delville, Guy Campet, Chinnakonda S. Gopinath, et al.. Exfoliation-induced nanoribbon formation of poly(3,4-ethylene dioxythiophene) PEDOT between MoS2 layers as cathode material for lithium batteries. Journal of Power Sources, 2006, vol. 156, n° 2, p. 615-619. ⟨10.1016/j.jpowsour.2005.06.022⟩. ⟨hal-00084527⟩