Saint Jean Carbon has produced samples of single atom thick graphene, a form of super-strong, super conductive carbon.

http://www.cantechletter.com/2016/10/saint-jean-carbon-produces-two-samples-single-layer-graphene/

“We are very pleased to have both the material of such high quality and the know how to produce one atom thick graphene with zero impurities and be the most conductive and strongest material in the world,” said CEO Paul Ogilvie. “This milestone takes us another step forward as we continue to develop faster and more efficient systems to produce the material. More and more research into graphene in lithium-ion batteries continues to make real progress around the world, the better we understand the needs, the better prepared we will be in the future.”