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http://dx.doi.org/10.7234/composres.2019.32.6.355

Synthesis of Co3O4 Nanocubes as an Efficient Electrocatalysts for the Oxygen Evolution Reacitons  

Choi, Hyung Wook (SKKU Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University)
Jeong, Dong In (School of Advanced Materials Science & Engineering, Sungkyunkwan University)
Wu, Shengyuan (School of Advanced Materials Science & Engineering, Sungkyunkwan University)
Kumar, Mohit (School of Advanced Materials Science & Engineering, Sungkyunkwan University)
Kang, Bong Kyun (Nano Materials and Components Research Center, Korea Electronics Technology Institute)
Yang, Woo Seok (Nano Materials and Components Research Center, Korea Electronics Technology Institute)
Yoon, Dae Ho (SKKU Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University)
Publication Information
Composites Research / v.32, no.6, 2019 , pp. 355-359 More about this Journal
Abstract
The high efficient water splitting system should involve the reduction of high overpotential value, which was enhanced by the electrocatalytic reaction efficiency of catalysts, during the hydrogen evolution reaction (HER) and the oxygen evolution reaction (OER) reaction, respectively. Among them, transition metal-based compounds (oxides, sulfides, phosphides, and nitrides) are attracting attention as catalyst materials to replace noble metals that are currently commercially available. Herein, we synthesized optimal monodisperse Co3[Co(CN)6]2 PBAs by FESEM, and confirmed crystallinity by XRD and FT-IR, and thermal behavior of PBAs via TG-DTA. Also, we synthesized monodispersed Co3O4 nanocubes by calcination of Co3[Co(CN)6]2 PBAs, confirmed the crystallinity by XRD, and proceeded OER measurement. Finally, the synthesized Co3O4 nanocubes showed a low overpotential of 312 mV at a current density of 10 mA·cm-2 with a low Tafel plot (96.6 mV·dec-1).
Keywords
Metal-organic frameworks; Prussian Blue Analogues; $Co_3[Co(CN)_6]_2$; $Co_3O_4$;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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