Researchers from Korea's Ulsan National Institute of Science and Technology developed a technique to repair graphene line defects by selectively depositing metal (Platinum). Graphene grain boundary defects harm the material's properties, and the new method can be used to address this issue.

Using Atomic Layer Deposition (ALD), the researchers managed to use the platinum metal and deposit it on the line defects. The researchers used the new improved sheets to develop electrodes and hydrogen gas sensors at room temperature. In these two applications, the enhanced sheets outperformed the original graphene sheets three times over.

The researchers now say they want to try different metals (such as gold and silver), and also test other applications.

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