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Capacitance behaviors of conducting polymer-coated graphene nanosheets composite electrodes containing multi-walled carbon nanotubes as additives
Hoe-Seung Kim, Yongju Jung, Seok Kim 한국탄소학회 Carbon Letters 6 Pages
한국탄소학회 Carbon Letters 2017, Vol.23 9 63-68 (6 pages)
Global warming is rapidly becoming a major concern as a result of the continuing emissions of greenhouse gases generated by the combustion of fossil fuels. To resolve this problem, various studies on efficient energy storage devices have been undertaken. Electronic technologies are increasingly used in electronic products and systems, and they require effective energy storage [1,2]. Supercapacitors are energy storage devices with high power density and long cycle life, and have been spotlighted... -
Study on urea precursor effect on the electroactivities of nitrogen-doped graphene nanosheets electrodes for lithium cells
Ki-Yong Kim, Yongju Jung, Seok Kim 한국탄소학회 Carbon Letters 7 Pages
한국탄소학회 Carbon Letters 2016, Vol.19 5 40-46 (7 pages)
Nitrogen-atom doped graphene oxide was considered to prevent the dissolution of polysulfide and to guarantee the enhanced redox reaction of sulfur for good cycle performance of lithium sulfur cells. In this study, we used urea as a nitrogen source due to its low cost and easy preparation. To find the optimum urea content, we tested three different ratios of urea to graphene oxide. The morphology of the composites was examined by field emission scanning electron microscope. Functional groups and... -
Study on electrochemical performances of sulfur-containing graphene nanosheets electrodes for lithium-sulfur cells
Ki-Soo Son, Seok Kim 한국탄소학회 Carbon Letters 4 Pages
한국탄소학회 Carbon Letters 2014, Vol.15 No.2 7 113-116 (4 pages)
as a conducting carbon matrix, graphene nanosheets (GNS) have been studied for their potential roles in improving the performance of sulfur cathodes. In this study, a GNS/sulfur (GNS/S) composite was prepared using the infiltration method with organic solvent. The structure, morphology and crystallinity of the composites were examined using scanning electron microscopy, transmission electron microscopy, and X-ray diffraction. The electrochemical properties were also characterized using cyclic... -
Catalytic Effects of Heteroatom-doped Graphene Nanosheets on the Performance of Li-O2 Batteries
Bae. Youngjoon, Lim. Hee-Dae, Yun. Young Soo, Kang. Kisuk 한국전기화학회 Journal of electrochemical science and technology 4 Pages
한국전기화학회 Journal of electrochemical science and technology 2014, Vol.5 No.2 49-52 (4 pages)
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Preparation and Characterization of Nanocomposite Based on Polyaniline and Graphene Nanosheets
Tung. Ngo Trinh, Van Khai. Tran, Jeon. Min-Hee, Lee. Yeo-Jin, Chung. Hoe-Il, Bang. Jeong-Hwan, Sohn. Dae-Won 한국고분자학회 Macromolecular research 6 Pages
한국고분자학회 Macromolecular research 2011, Vol.19 No.2 203-208 (6 pages)
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A modified electrode by a facile green preparation of reduced graphene oxide utilizing olive leaves extract
Abeer Baioun, Hassan Kellawi, Ahamed Falah 한국탄소학회 Carbon Letters 8 Pages
한국탄소학회 Carbon Letters 2017, Vol.24 7 47-54 (8 pages)
work a green method of reducing graphene oxide (rGO) by an inexpensive, effective and scalable method using olive leaf aqueous extract as the reducing agent, was used to produce rGO. Both GO and rGO were prepared and investigated by ultraviolet and visible spectroscopy, Fourier-transform infrared, scanning electron microscopy, atomic force microscopy, thermogravimetric analysis, cyclic voltammetry, X-ray photoelectron spectra, electrochemical impedance spectroscopy and powder X-ray diffraction.
