Graphene Nanoplatelets doped indium via mechano-chemical reaction

Abstract

We successfully implemented, for the first time, the doping of an indium (In) at the edge of graphene nanoplatelets (GnPs) through a mechanochemical approach by using graphite and In that are in a solid state. In doping at the edges of GnPs as well as the characteristic of InGnPs were confirmed via various analysis techniques. The content of In through energy-dispersive X-ray spectroscopies (EDS) was approximately 0.78 at.% (6.76 wt.%). Besides, we can confirm that the ball milling is very powerful approach to generate enough kinetic energy that can hold even post-transition metal ant then it can form C-In bond which is not known. Additionally, InGnPs display outstanding electrocatalytic performance with excellent long-term stability as well as tolerance against CO poisoning and methanol crossover for the cathodic oxygen reduction reaction (ORR) due to In doping.