New Asymmetric Supercapacitors paper published in Advanced Materials

With an international team of researchers led by Prof. R.A.Fischer (TUM), we obtained a further increase of asymmetric supercapacitors’ energy density. The team synthesized a new graphene-based material with an Amine functionalized Metal-Organic Framework (MOF), successfully spacing the graphene layers and creating a hierarchical porous structure with very high specific surface area and interconnected conducting network. This new structure acts as an effective charge storing material with capacitance up to 651 F/g, significantly higher than traditionally graphene-based materials. Used in an asymmetric supercapacitor together with Ti3C2Tc MXene as opposite electrode the team obtained a cell able to deliver a power density of up to 16 kW kg−1 and an energy density of up to 73 Wh kg−1, with stability up to 88% after 10,000 cycles.

Title: Covalent Graphene-MOF Hybrids for High-Performance Asymmetric Supercapacitors

Authors: Kolleboyina Jayaramulu,* Michael Horn, Andreas Schneemann, Haneesh Saini,Aristides Bakandritsos, Vaclav Ranc, Martin Petr, Vitalie Stavila, Chandrabhas Narayana, Błażej Scheibe, Štěpán Kment, Michal Otyepka, Nunzio Motta, Deepak Dubal,* Radek Zbořil,* and Roland A. Fischer*

Reference: Adv. Mater. 2021, 33, 2004560,