Researchers from Korea's Ulsan institute developed a high performance Oxygen Reduction Reaction (ORR) electrocatalyst using chemical functionalized (doped) graphene oxide. ORR electrocatalysts, which split hydrogen gas to make electricity are critical components in fuel cells and some batteries.

The researchers used covalent functionalization of various small organic molecules with a subsequent thermal treatment, which resulted in thin films. The researchers say they achieved a simple approach to introduce nitrogen atoms on graphene oxide sheets, without a toxic gas precursor and with a good doping degree control.

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