Solution-based production of graphene nano-platelets containing extremely low amounts of heteroatoms

• Highly carbon-pure graphene-based nano-platelets were produced using a solution process.
• Ammonia borane showed excellent ability to reduce graphene oxide.
• Resulting materials showed a very high electrical conductivity.

We developed a new route for scalable production of graphene-based nano-platelets containing extremely low amounts of heteroatoms via treatment of graphene oxide suspensions with ammonia borane at low temperatures without further thermal annealing. The C/O atomic ratio measured by combustion-based elemental analysis is the highest value among published data on graphene-based nano-platelets using solution processes. Resulting materials showed a very high electrical conductivity.

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