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고장면,D. Soundarajan,박정훈,양승대,김상욱,김광만,유국현 한국물리학회 2012 Current Applied Physics Vol.12 No.1
a-Cobalt hydroxide is synthesized through a novel radiation-induced route using a cobalt nitrate hexahydrate isopropanol solution by irradiating 60Co g-rays. The as-prepared product shows a layerstructured mesoporous morphology with an average size of 250 nm. Crystalline property analysis exhibits the presence a-Co(OH)2 as a predominant phase with a tiny amount of secondary phases of b-Co(OH)2 and CoO. X-ray photoelectron spectroscopy discloses the existence of Co as Co(OH)2 and CoO with a stoichiometric ratio of 76.7:23.3. In addition, the supercapacitive properties of the product are investigated using cyclic voltammetry and impedance spectroscopy in 1M KOH aqueous solution,showing a maximum capacitance value of 246.7 F g-1 at a scan rate of 5 mV s-1.
Ko, J.M.,Soundarajan, D.,Park, J.H.,Yang, S.D.,Kim, S.W.,Kim, K.M.,Yu, K.H. Elsevier 2012 Current Applied Physics Vol.12 No.1
α-Cobalt hydroxide is synthesized through a novel radiation-induced route using a cobalt nitrate hexahydrate isopropanol solution by irradiating <SUP>60</SUP>Co γ-rays. The as-prepared product shows a layer-structured mesoporous morphology with an average size of 250 nm. Crystalline property analysis exhibits the presence α-Co(OH)<SUB>2</SUB> as a predominant phase with a tiny amount of secondary phases of β-Co(OH)<SUB>2</SUB> and CoO. X-ray photoelectron spectroscopy discloses the existence of Co as Co(OH)<SUB>2</SUB> and CoO with a stoichiometric ratio of 76.7:23.3. In addition, the supercapacitive properties of the product are investigated using cyclic voltammetry and impedance spectroscopy in 1M KOH aqueous solution, showing a maximum capacitance value of 246.7 F g<SUP>-1</SUP> at a scan rate of 5 mV s<SUP>-1</SUP>.