Arghya Narayan Banerjee
25 years experience in the teaching of advanced courses in Physics, Nanotechnology, Materials Sciences, Engineering Mathematics at Undergraduate, Graduate, and Doctoral levels along with practical laboratory supervision.
Additionally, proficiency and more than 15 years hands-on experience in Thin Film microfabrication, nanomaterials syntheses and characterization, MEMS fabrication and packaging, synthesis and optoelectrical characterization of carbon-based nanomaterials (graphene, carbon nanotube, microporous carbon, etc.), transparent oxide nanomaterials (ZnO, SnO2, TiO2, CuAlO2, etc.) and devices for solar energy conversion, nanocomposites for supercapacitors, metallic (Ni, Co, Cu, etc.) nanostructures for field-emission devices, operation, and maintenance of UHV systems, FESEM, HRTEM, AFM, XRD, and spectrophotometers.
In short, Ph.D. in Physics with a specialty in Materials Science and Semiconductor Device Engineering with more than 150 publications (Articles, Books, Book Chapters, Conference Proceedings) having nearly 5100 citations (according to Google Scholar Citation Index).
H-Index = 39, i10-index = 78 (as of Oct. 2024).
Phone: 82-53-810-2453
Address: 507, School of Mechanical Engineering, College of Mechanical and IT Engineering, Yeungnam University, Gyeongsan, South Korea
Additionally, proficiency and more than 15 years hands-on experience in Thin Film microfabrication, nanomaterials syntheses and characterization, MEMS fabrication and packaging, synthesis and optoelectrical characterization of carbon-based nanomaterials (graphene, carbon nanotube, microporous carbon, etc.), transparent oxide nanomaterials (ZnO, SnO2, TiO2, CuAlO2, etc.) and devices for solar energy conversion, nanocomposites for supercapacitors, metallic (Ni, Co, Cu, etc.) nanostructures for field-emission devices, operation, and maintenance of UHV systems, FESEM, HRTEM, AFM, XRD, and spectrophotometers.
In short, Ph.D. in Physics with a specialty in Materials Science and Semiconductor Device Engineering with more than 150 publications (Articles, Books, Book Chapters, Conference Proceedings) having nearly 5100 citations (according to Google Scholar Citation Index).
H-Index = 39, i10-index = 78 (as of Oct. 2024).
Phone: 82-53-810-2453
Address: 507, School of Mechanical Engineering, College of Mechanical and IT Engineering, Yeungnam University, Gyeongsan, South Korea
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Peer-Review Articles by Arghya Narayan Banerjee
conductivity over various voltages, hampering their potential for energy
storage applications. This work proposes a novel approach to address these challenges. A self-oriented multiple-electronic structure of a 1D-MnO2-nanorod/2D-Mn2O3-nanosphere composite was assembled on 2D-graphene oxide nanosheet/1D-carbon nanofiber (GO/CNF) hybrids. Aided by K+ ions, the MnO2 nanorods were partially converted to Mn2O3 nanospheres, while the GO nanosheets were combined with CNF through hydrogen bonds resulting in a unique double binary 1D−2D mixed morphology of MnO2/Mn2O3-GO/CNF hybrid, having a novel mechanism of multiple Mn ion redox reactions facilitated by the interconnected 3D network. The morphology of the MnO2 nanorods was controlled by regulating the potassium ion content through a rinsing strategy. Interestingly, pure MnO2 nanorods undergo air-annealing to form a mixture of nanorods and nanospheres (MnO2/Mn2O3) with a distinct morphology indicating pseudocapacitive surface redox reactions involving Mn2+, Mn3+, and Mn4+. In the presence of the GO/CNF framework,
the charge storage properties of the MnO2/Mn2O3-GO/CNF composite electrode show dominant battery-type behavior because of the unique mesoporous structure with a crumpled morphology that provides relatively large voids and cavities with smaller diffusion paths to facilitate the accumulation/intercalation of charges at the inner electroactive sites for the diffusion-controlled process. The corresponding specific capacity of 800 C g−1 or 222.2 mAh g−1 at 1 A g−1 and remarkable cycling stability (95%) over 5000 cycles at 3 A g−1 were considerably higher than those of the reported electrodes of similar materials. Moreover, a hybrid supercapacitor device is assembled using MnO2/Mn2O3-GO/CNF as the positive electrode and activated carbon as the negative electrode, which exhibits a superior maximum energy density (∼25 Wh kg−1) and maximum power density (∼4.0 kW kg−1). Therefore, the as-synthesized
composite highlights the development of highly active low-cost materials for next-generation energy storage applications.
novel dominant battery-type charge-storage mechanism, manifested by the porous morphology of the electrodes to enhance the diffusion-controlled process. Copper oxide was chosen as the electroactive material due to its low cost, easy processability, environmental friendliness, and multiple oxidation states, all of which are very important for practical applicability in charge-storage devices. Additionally, aluminum was chosen as a dopant due to its elemental abundance, non-toxicity, and energetically favorable ionic radius for substitutional doping. A maximum 272 C/g (@1 A/g current density) specific capacity was observed for 5 wt% Al-doped CuO. Evidently, higher Al-doping provided increased defects and doping sites to enhance the redox activity in order to improve the supercapacitive performance. A combinatorial battery−capacitor charge-storage mechanism was proposed in terms of the accumulation and intercalation of charges at the inner electroactive sites of the nanoflakes through a large number of voids and cavities in order to contribute towards dominant battery-type diffusion capacitance, while optimum Al-doping created considerable redox-active sites to promote surface-controlled pseudocapacitance. The optimized Al-CuO electrode revealed extraordinary long-term cycling stability with 99% capacity retention over 5000 charge/discharge cycles. A hybrid two-electrode device, made up of a battery-type Al-CuO positrode and capacitor-type activated-carbon negatrode, demonstrated a remarkable energy-power performance with a maximum energy density of 30 Wh/kg and a maximum power density of 7.25 kW/kg, with an excellent cycle life (98% capacity retention over 5000 cycles). This work demonstrates a novel strategy to fabricate high-performance hybrid supercapacitors for the next generation charge-storage devices.
conductivity over various voltages, hampering their potential for energy
storage applications. This work proposes a novel approach to address these challenges. A self-oriented multiple-electronic structure of a 1D-MnO2-nanorod/2D-Mn2O3-nanosphere composite was assembled on 2D-graphene oxide nanosheet/1D-carbon nanofiber (GO/CNF) hybrids. Aided by K+ ions, the MnO2 nanorods were partially converted to Mn2O3 nanospheres, while the GO nanosheets were combined with CNF through hydrogen bonds resulting in a unique double binary 1D−2D mixed morphology of MnO2/Mn2O3-GO/CNF hybrid, having a novel mechanism of multiple Mn ion redox reactions facilitated by the interconnected 3D network. The morphology of the MnO2 nanorods was controlled by regulating the potassium ion content through a rinsing strategy. Interestingly, pure MnO2 nanorods undergo air-annealing to form a mixture of nanorods and nanospheres (MnO2/Mn2O3) with a distinct morphology indicating pseudocapacitive surface redox reactions involving Mn2+, Mn3+, and Mn4+. In the presence of the GO/CNF framework,
the charge storage properties of the MnO2/Mn2O3-GO/CNF composite electrode show dominant battery-type behavior because of the unique mesoporous structure with a crumpled morphology that provides relatively large voids and cavities with smaller diffusion paths to facilitate the accumulation/intercalation of charges at the inner electroactive sites for the diffusion-controlled process. The corresponding specific capacity of 800 C g−1 or 222.2 mAh g−1 at 1 A g−1 and remarkable cycling stability (95%) over 5000 cycles at 3 A g−1 were considerably higher than those of the reported electrodes of similar materials. Moreover, a hybrid supercapacitor device is assembled using MnO2/Mn2O3-GO/CNF as the positive electrode and activated carbon as the negative electrode, which exhibits a superior maximum energy density (∼25 Wh kg−1) and maximum power density (∼4.0 kW kg−1). Therefore, the as-synthesized
composite highlights the development of highly active low-cost materials for next-generation energy storage applications.
novel dominant battery-type charge-storage mechanism, manifested by the porous morphology of the electrodes to enhance the diffusion-controlled process. Copper oxide was chosen as the electroactive material due to its low cost, easy processability, environmental friendliness, and multiple oxidation states, all of which are very important for practical applicability in charge-storage devices. Additionally, aluminum was chosen as a dopant due to its elemental abundance, non-toxicity, and energetically favorable ionic radius for substitutional doping. A maximum 272 C/g (@1 A/g current density) specific capacity was observed for 5 wt% Al-doped CuO. Evidently, higher Al-doping provided increased defects and doping sites to enhance the redox activity in order to improve the supercapacitive performance. A combinatorial battery−capacitor charge-storage mechanism was proposed in terms of the accumulation and intercalation of charges at the inner electroactive sites of the nanoflakes through a large number of voids and cavities in order to contribute towards dominant battery-type diffusion capacitance, while optimum Al-doping created considerable redox-active sites to promote surface-controlled pseudocapacitance. The optimized Al-CuO electrode revealed extraordinary long-term cycling stability with 99% capacity retention over 5000 charge/discharge cycles. A hybrid two-electrode device, made up of a battery-type Al-CuO positrode and capacitor-type activated-carbon negatrode, demonstrated a remarkable energy-power performance with a maximum energy density of 30 Wh/kg and a maximum power density of 7.25 kW/kg, with an excellent cycle life (98% capacity retention over 5000 cycles). This work demonstrates a novel strategy to fabricate high-performance hybrid supercapacitors for the next generation charge-storage devices.