Production of graphene which is both cost effective and in sufficient qualities to satisfy demand has been a challenge for the industry. KoreaGraph is developing proprietary techniques to supply low-cost, high-quality graphene to the market at our Research & Development Laboratory (R&D Lab) and utilizing refined techniques at our Graphene Production Facility (GPF) in Seoul, Korea.
Currently the most common and economical graphene manufacturing technique chemical vapor deposition, or CVD. This technique involves heating copper and exposing it to methane, which results in graphene being deposited on the copper foil. Whilst some CVD processes produce low-quality graphene, we have refined this process to produce high-quality graphene.
However this technique consumes significant energy and time during the production process, which means we are only able to produce limited volumes of high-cost graphene. It should be noted however that our basic CVD technique is amongst the most cost effective in the industry.
The limitations of the CVD technique is not simply the process itself, but mainly the use of copper as the substrate. KoreaGraph are experimenting with different types of polycrystalline substrates including nickel, palladium, platinum, iridium and other metallic based foils. This technique is yielding positive results.
We have also refined the CVD technique by utilizing alternative gases to methane. Whilst these techniques are proprietary, we are able to confirm that we have achieved 100% coverage of graphene on substrate foils, with high percentages of the most valuable single layer graphene. This technique is likely to be refined further during production, and will significantly reduce the time and energy involved in producing high-quality and low-cost graphene for use in a multitude of industrial application
In addition to production of graphene, we undertake significant research into applications of this unique material. We are producing various metallic alloys and composite materials to identify the most beneficial applications for our business. We expect to be producing the majority of our graphene output as composite materials, taking our production to the next stage and capturing increased market share as a result.