BN-Graphene Composites Generated by Covalent Cross-Linking with Organic Linkers

作者：Kumar Ram; Gopalakrishnan K; Ahmad Irshad; Rao C N R

来源：Advanced Functional Materials, 2015, 25(37): 5910-5917.

DOI：10.1002/adfm.201502166

<jats:p>Composites of boron nitride (BN) and carboxylated graphene are prepared for the first time using covalent cross‐linking employing the carbodiimide reaction. The BN<jats:sub>1–<jats:italic>x</jats:italic></jats:sub>G<jats:italic><jats:sub>x</jats:sub></jats:italic> (<jats:italic>x</jats:italic> ≈ 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 <jats:italic>x</jats:italic> ≈ 0.75 composite especially exhibits satisfactory performance with high stability as an electrode in supercapacitors. The <jats:italic>x</jats:italic> ≈ 0.75 composite is also found to be a good electrocatalyst for the oxygen reduction reaction in fuel cells.</jats:p>

• 出版日期2015-10-7