Three‐Dimensional Shape Engineered, Interfacial Gelation of Reduced Graphene Oxide for High Rate, Large Capacity Supercapacitors

• DOI: 10.1002/adma.201303503
• Publication Date: 2013-10-18T11:48:27Z
• Authors: Uday Narayan Maiti; Joonwon Lim; Kyung Eun Lee; Won Joon Lee; Sang Ouk Kim
• Keywords: HIGH-PERFORMANCE; ELECTROCHEMICAL CAPACITORS; CARBON NANOTUBES; NEXT-GENERATION; DOPED GRAPHENE; ENERGY-STORAGE; REDUCTION; HYDROGEL; ELECTRODES; FILMS; 02 engineering and technology; 0210 nano-technology

DOI: 10.1002/adma.201303503 Assembly of graphene into functional macroscopic objects, such as fi lms, [ 1 ] sheets, [ 2 ] fi bers, [ 3 ] foams, [ 4,5 ] and other complex architectures, [ 6 ] is of enormous research interest. How to attain desired structures in a cost effective and manufacturable manner is crucial for energy harvest/storage, catalysis, sensors and so on. Unlike fullerene or carbon nanotubes, whose assembly generally relies on weak van der Walls force or chemical modifi cation, two-dimensional graphene may straightforwardly exploit strong interlayer π – π stacking. Unfortunately, such a strong and directional interaction frequently results in graphitic stacking with minimal surface area. [ 7,8 ]