Microporous Graphene Harbors Ions (IMAGE) Michigan Technological University Caption Hu and his research team developed a new way to make surface-microporous 3-D graphene, which has a unique structure of mesopores and micropores. The mesopore is like a harbor and the electrolyte ions are ships that can dock in the micropores, making the material an exceptional supercapacitor. Credit Sarah Bird/Michigan Tech Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.