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2D materials from Thomas Swan

Thomas Swan uses a proprietary Direct Liquid Exfoliation process which was developed in collaboration with AMBER (Advanced Materials and BioEngineering Research Centre) at Trinity College Dublin. Commercial terms were recently agreed for the production of atomically thin two-dimensional layered materials between Thomas Swan and Trinity College Dublin. Building on its know-how in the manufacture of graphene, the company can quickly scale the manufacture of two-dimensional materials by exfoliation of layered raw materials.

The first non-carbon 2D product to be commercially available is 2D boron nitride. Like graphene, 2D boron nitride has high thermal conductivity and gas barrier performance; but unlike graphene is electrically insulating. This is a unique combination of properties enabling thermal conductivity without compromising electrical protection.

What is 2D Boron Nitride?

Hexagonal boron nitride is a chemical and heat resistant, white solid. Like graphite, the hexagonal form exists in layers of six membered rings (in this case containing three boron and three nitrogen atoms) which can be separated or exfoliated.

Exfoliation of hexagonal boron nitride produces atomically thin nano-platelets (see figure showing Transmission Electron Micrograph of the exfoliated product). These nano-platelets have enhanced thermal conductivity and gas barrier properties when compared to the layered material.

The new 2D boron nitride products are suitable for use as barrier additives, thermal interface materials and thermal conductivity enhancers, they are currently being evaluated in the plastics, electronics and dielectric oils industries.

Thomas Swan is next developing processes for exfoliation of transition metal dichalcogenides such as molybdenum disulphide, tungsten diselenide, tungsten disulphide etc. 2D molybdenum disulphide will be commercially available in mid-2016.

Thomas Swan welcomes enquiries for supply of any 2D materials. For further information, please contact elicarbsales@thomas-swan.co.uk