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Title: Direct printing and reduction of graphite oxide for flexible supercapacitors

We report direct printing and photo-thermal reduction of graphite oxide (GO) to obtain a highly porous pattern of interdigitated electrodes, leading to a supercapacitor on a flexible substrate. Key parameters optimized include the amount of GO delivered, the suitable photo-thermal energy level for effective flash reduction, and the substrate properties for appropriate adhesion after reduction. Tests with supercapacitors based on the printed-reduced GO showed performance comparable with commercial supercapacitors: the energy densities were 1.06 and 0.87 mWh/cm{sup 3} in ionic and organic electrolytes, respectively. The versatility in the architecture and choice of substrate makes this material promising for smart power applications.
Authors:
 [1] ;  [2] ;  [3] ;  [1] ;  [4] ;  [4]
  1. Department of Nano Science and Technology, Graduate School of Convergence Science and Technology, Seoul National University, Seoul (Korea, Republic of)
  2. Department of Mechanical and Aerospace Engineering, Seoul National University, Seoul (Korea, Republic of)
  3. Energy Materials and Convergence Research Department, Korea Institute of Energy Research, Daejeon (Korea, Republic of)
  4. (Korea, Republic of)
Publication Date:
OSTI Identifier:
22314525
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 105; Journal Issue: 5; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; CAPACITIVE ENERGY STORAGE EQUIPMENT; ELECTRODES; ELECTROLYTES; ENERGY DENSITY; GRAPHITE; OXIDES; REDUCTION