Standardization

Researchers from the National University of Singapore (NUS) have set out to tackle the issue of a lack of graphene production standards, which leads to many cases of poor quality graphene from suppliers. The team developed a systematic and reliable method for establishing the quality of graphene samples from around the world. They were able to achieve this by using a wide range of analytical techniques and tested samples from many suppliers.

Upon analyzing samples from over 60 different providers from the Americas, Asia, and Europe, the NUS team discovered that the majority contained less than 10% of what can be considered graphene flakes. The bulk of the samples was graphite powder that was not exfoliated properly.

BSI, the UK-based standards body and global certification company, has published a new guide to the properties of graphene flakes, PAS 1201. The guide provides an explanation of the physical and chemical properties of graphene flakes, and advice on information manufacturers and suppliers of graphene should give to prospective users.

Dan Palmer, Head of Manufacturing at BSI, says: “PAS 1201 sets out the information that any manufacturer or interested party needs to understand about graphene before introducing this material to the manufacturing process. Standardizing the information that is made available about properties of graphene flakes is important in order for the commercial opportunities of graphene in the UK to be realized.”