When was the first graphene production technique developed?
History of graphene
2004
Single-layer graphene was explored theoretically by P. R. Wallace in 1947. It was first unambiguously produced and identified in 2004, by the group of Andre Geim and Konstantin Novoselov, though they credit Hanns-Peter Boehm and his co-workers for the experimental discovery of graphene in 1962.[1][2] Boehm et al. introduced the term graphene in 1986.[3][4]