Surface Structure Effects for Redox Reaction of Molecules Using Carbon Mesosponge (Supporting Information)

Quinone-based molecules provide promising electrode materials for energy-storage devices; however, their redox reaction kinetics are typically slow because the process is governed by mass transfer. The micropore confinement of quinone-based molecules exhibits anomalous pseudocapacitive behavior owing to the characteristic adsorption potentials of micropores. In addition, a highly crystalline carbon surface enhances redox reversibility through strong π-π interactions. This study investigated the effects of surface crystallinity on redox reversibility utilizing a carbon mesosponge comprising single-layer graphene with a crystalline carbon surface. The carbon mesosponge improved the redox reaction despite its mesoporous nature. This result can be attributed to the large amount of adsorbed molecules on the micropore surface and the incorporation of single-layer graphene within the framework.