EU's biggest research initiative is the Graphene Flagship - https://en.wikipedia.org/wiki/Graphene_Flagship
Major Conferences - Graphene Week, Mobile World Congress (Barcelona + SF), National Graphene Association (inaugural conference was Oct 2017)
Major universities in the US - UT Austin, UPenn, MIT, Stanford, Rice, Berkeley. Lot of activity in Korea, Japan, and China
Companies - Various companies on growth side. Lot of companies doing work in composites and coatings. Various startups looking into supercap, audio, sensor, battery, and water filtration applications