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BN–Graphene Composites Generated by Covalent Cross‐Linking with Organic Linkers
Author(s) -
Kumar Ram,
Gopalakrishnan K.,
Ahmad Irshad,
Rao C. N. R.
Publication year - 2015
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.201502166
Subject(s) - materials science , graphene , thermogravimetric analysis , composite material , boron nitride , composite number , covalent bond , electrical resistivity and conductivity , electrocatalyst , supercapacitor , electrode , chemical engineering , electrochemistry , nanotechnology , organic chemistry , chemistry , electrical engineering , engineering
Composites of boron nitride (BN) and carboxylated graphene are prepared for the first time using covalent cross‐linking employing the carbodiimide reaction. The BN 1– x G x ( x ≈ 0.25, 0.5, and 0.75) obtained are characterized using a variety of spectroscopic techniques and thermogravimetric analysis. The composites show composition‐dependent electrical resistivity, the resistivity decreasing with increase in graphene content. The composites exhibit microporosity and the x ≈ 0.75 composite especially exhibits satisfactory performance with high stability as an electrode in supercapacitors. The x ≈ 0.75 composite is also found to be a good electrocatalyst for the oxygen reduction reaction in fuel cells.
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