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A facile and green synthesis of NiCo2O4/Graphene nanohybrids for supercapacitor applications
고태훈,( Sivaprakasam Radhakrishnan ),최웅기,서민강,길명섭,김학용,김병석 한국공업화학회 2016 한국공업화학회 연구논문 초록집 Vol.2016 No.0
We have prepared NiCo2O4 nanoparticles decorated graphene nanosheets (NiCo2O4-rGO) nanohybrids via a dry synthesis technique without using any harmful reagents. As-prepared NiCo2O4-rGO nanohybrids were characterized by scanning electron microscopy, X-ray diffraction. The electrochemical performances of NiCo2O4-rGO nanohybrids were analyzed by cyclic voltammetry and electrochemical impedance spectroscopy. The NiCo2O4-decorated graphene electrode exhibited a maximum specific capacitance of 886 Fg-1 at a scan rate of 5.0 mV/s, and also showed high cyclic stability with retention of 82.1% after 2000 cycle.
고태훈,성재경,Sivaprakasam Radhakrishnan,곽채송,길명섭,김학용,김병석 한국공업화학회 2019 Journal of Industrial and Engineering Chemistry Vol.73 No.-
The nickel cobalt/MWCNT composites with Ni/Co molar ratio of 1:2 showed excellent electrochemicalperformance in term of specific capacitance ( 800 F g 1 at current density of 2 A g 1), good ratecapability and excellent stability, which may be attributed to the combined benefits of bi-metals andMWCNT and porous metal nanostructures, enhancing the kinetics of ions/electron transport at bothelectrode inside and electrode/electrolyte interface. Further, the nickel cobalt/MWCNT compositemodified electrode as electro-catalyst for glucose electro-oxidation demonstrated high sensitivity, goodlinear range and detection limit, which hold great promise as advanced electrode materials forsupercapacitor and glucose electro-oxidation applications.
박지영,고태훈,서민강,김학용,김병석 한국공업화학회 2016 한국공업화학회 연구논문 초록집 Vol.2016 No.0
In recent years there has been strong interest in the development of highly flexible electronic systems which can enable the realization of next-generation bendable, wearable, and implantable devices. The primary requirement for fabrication of flexible electronics is the development of a highly conductive, flexible, and light-weight electrode. In this study, we present a highly efficient and economical solution called as 'in situ hydrolytic hydrogenation' for preparation of highly conductive thin film electrode based on silver nanostructures. In addition, we report its electrochemical activities for applications of the flexible nanostructured metal/cellulose composites incorporating MWCNTs prepared by a hydrolytic hydrogenation.