IODINE DOPED GRAPHENE SYNTHESIS VIA A FACILE ELECTROPHILIC SUBSTITUTION. HIGH PERFORMANCE AS ORR ELECTROCATALYST FOR PEMFC Print

IODINE DOPED GRAPHENE SYNTHESIS VIA A FACILE ELECTROPHILIC SUBSTITUTION. HIGH PERFORMANCE AS ORR ELECTROCATALYST FOR PEMFC


Adriana Marinoiu*, Elena Carcadea, Irina Petreanu, Elena Marin, Bianca Sucea, Amalia Soare, Mircea Raceanu


National Research and Development Institute for Cryogenics and Isotopic Technologies - ICSI Rm. Valcea, Uzinei Street no. 4, P.O. Box Râureni 7, 240050, Râmnicu Vâlcea, Romania

ABSTRACT

 

Iodine substituted graphene was synthesised in order to obtain a metal free catalyst for the oxygen reduction reaction (ORR). The doping with iodine was performed by electrophilic substitution of commercial graphene. The samples were characterised by wavelength dispersive X-ray fluorescence (WDXRF) spectroscopy, Scanning Electron Microscopy (SEM), and thermal gravimetric analysis. The electrochemical performances were investigated by cyclic voltammetry, there were evaluated and compared with a typical PEMFC configuration. In this paper, we present a facile synthesis protocol for preparation of iodine doped-graphene materials, whose evidenced properties could be inserted in subsequent development of ORR electrode modifications.

Keywords: iodine, doped graphene, fuel cell.

 

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*Corresponding author: Adriana Marinoiu, E-mail: adriana.marinoiu@icsi.ro, phone: 0250 732744,   fax: 0250 732746