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Richard J. Gimlin - One of the best experts on this subject based on the ideXlab platform.

  • Ragone Plot comparison of radioisotope cells and the direct sodium borohydride hydrogen peroxide fuel cell with chemical batteries
    IEEE Transactions on Energy Conversion, 2008
    Co-Authors: Michael Romer, George H. Miley, Nie Luo, Richard J. Gimlin
    Abstract:

    Radioisotope cells (RCs) and a direct sodium borohydride/hydrogen peroxide fuel cell ( FC) are compared to conventional chemical batteries through Ragone Plots of theoretical (RCs) and experimental (chemical batteries and FC) data. It is found that the RCs are projected to have superior specific energy but inferior specific power, while the borohydride/peroxide FC shows an impressive range for both parameters. Thus, RCs may be especially useful in battery charging, communications, or other applications that require a long-lived, low-power source or periodic pulses of energy. While the borohydride/peroxide FC can be scaled to a variety of high-power applications, it is especially well suited for space and undersea use where air independence is essential.

  • Ragone Plot Comparison of Radioisotope Cells and the Direct Sodium Borohydride/Hydrogen Peroxide Fuel Cell With Chemical Batteries
    IEEE Transactions on Energy Conversion, 2008
    Co-Authors: Michael Romer, George H. Miley, Richard J. Gimlin
    Abstract:

    Radioisotope cells (RCs) and a direct sodium borohydride/hydrogen peroxide fuel cell ( FC) are compared to conventional chemical batteries through Ragone Plots of theoretical (RCs) and experimental (chemical batteries and FC) data. It is found that the RCs are projected to have superior specific energy but inferior specific power, while the borohydride/peroxide FC shows an impressive range for both parameters. Thus, RCs may be especially useful in battery charging, communications, or other applications that require a long-lived, low-power source or periodic pulses of energy. While the borohydride/peroxide FC can be scaled to a variety of high-power applications, it is especially well suited for space and undersea use where air independence is essential.

Michael Romer - One of the best experts on this subject based on the ideXlab platform.

  • Ragone Plot comparison of radioisotope cells and the direct sodium borohydride hydrogen peroxide fuel cell with chemical batteries
    IEEE Transactions on Energy Conversion, 2008
    Co-Authors: Michael Romer, George H. Miley, Nie Luo, Richard J. Gimlin
    Abstract:

    Radioisotope cells (RCs) and a direct sodium borohydride/hydrogen peroxide fuel cell ( FC) are compared to conventional chemical batteries through Ragone Plots of theoretical (RCs) and experimental (chemical batteries and FC) data. It is found that the RCs are projected to have superior specific energy but inferior specific power, while the borohydride/peroxide FC shows an impressive range for both parameters. Thus, RCs may be especially useful in battery charging, communications, or other applications that require a long-lived, low-power source or periodic pulses of energy. While the borohydride/peroxide FC can be scaled to a variety of high-power applications, it is especially well suited for space and undersea use where air independence is essential.

  • Ragone Plot Comparison of Radioisotope Cells and the Direct Sodium Borohydride/Hydrogen Peroxide Fuel Cell With Chemical Batteries
    IEEE Transactions on Energy Conversion, 2008
    Co-Authors: Michael Romer, George H. Miley, Richard J. Gimlin
    Abstract:

    Radioisotope cells (RCs) and a direct sodium borohydride/hydrogen peroxide fuel cell ( FC) are compared to conventional chemical batteries through Ragone Plots of theoretical (RCs) and experimental (chemical batteries and FC) data. It is found that the RCs are projected to have superior specific energy but inferior specific power, while the borohydride/peroxide FC shows an impressive range for both parameters. Thus, RCs may be especially useful in battery charging, communications, or other applications that require a long-lived, low-power source or periodic pulses of energy. While the borohydride/peroxide FC can be scaled to a variety of high-power applications, it is especially well suited for space and undersea use where air independence is essential.

Deepak P. Dubal - One of the best experts on this subject based on the ideXlab platform.

  • Morphological tuning of CuO nanostructures by simple preparative parameters in SILAR method and their consequent effect on supercapacitors
    Nano-Structures & Nano-Objects, 2016
    Co-Authors: Surendra Shinde, Deepak P. Dubal, Gajanan Ghodake, Dae Y. Kim, Vijay Fulari
    Abstract:

    Morphology-controlled synthesis of nanomaterials by tuning simple preparative parameters is an impressive path to develop diverse nanostructured materials. Here, we are exploring a successful example of fabrication of hierarchical CuO nanostructures (nanoflakes, nanopetals and diffused nanorods) by simply controlling temperature of reaction bath (3rd beaker) in SILAR method. These CuO nanostructures are further successfully employed as electrode material in supercapacitors. The correlation between electrochemical supercapacitive properties and nanostructures of CuO is investigated in detail. It is revealed that, the supercapacitive properties strongly depend on CuO nanostructures. The specific capacitance values for nanoflakes, nanopetals and diffused nanorods of CuO are found to be 664 F/g, 790 F/g and 695 F/g, respectively at 5 mV/s scan rate. Ragone Plot ascertains that CuO nanostructures obtained by SILAR method are potential candidates for high power and high energy density supercapacitors. In addition, EIS analyses show lower ESR values and excellent frequency response for CuO nanostructures.

  • Influence of Mn incorporation on the supercapacitive properties of hybrid CuO/Cu(OH)2 electrodes
    RSC Advances, 2015
    Co-Authors: Surendra Shinde, Deepak P. Dubal, Gajanan Ghodake, Pedro Gómez-romero, Sungyeol Kim, Vijay Fulari
    Abstract:

    Here, we are presenting the effect of Mn doping on the supercapacitive properties of CuO/Cu(OH)2 hybrid electrodes. Briefly, Mn doped CuO/Cu(OH)2 (Mn:CuO/Cu(OH)2) thin films have been synthesized by a successive ionic layer adsorption and reaction (SILAR) method which are further characterized by different physiochemical techniques. Our results revealed the formation of hybrid CuO/Cu(OH)2 thin films with significant morphological deviation through Mn doping. Moreover, considerable positive effect of Mn doping on the electrochemical properties of hybrid CuO/Cu(OH)2 electrodes have been witnessed. Later, the results suggest that at 3% Mn doping in CuO/Cu(OH)2 electrodes with nanoflower-like nanostructures exhibits the highest specific capacitance. The maximum specific capacitance achieved for a 3% Mn:CuO/Cu(OH)2 hybrid electrode is 600 F g−1 at 5 mV s−1 in 1 M Na2SO4 electrolyte. Additionally, a Ragone Plot confirms the potential of the Mn:CuO/Cu(OH)2 hybrid electrode for electrical energy storage applications.

  • Nanoflower-like CuO/Cu(OH)2 hybrid thin films: Synthesis and electrochemical supercapacitive properties
    Journal of Electroanalytical Chemistry, 2014
    Co-Authors: Surendra Shinde, Deepak P. Dubal, G.s. Ghodake, Dae-young Kim, Vijay Fulari
    Abstract:

    hybrid thin films have been synthesized by simple and inexpensive successive ionic layer adsorption and reaction (SILAR) method. Prepared CuO/Cu(OH)2 samples have been used for the structural and morphological characterization with different characterization techniques. The electrochemical supercapacitive properties of CuO/Cu(OH)2 nanoflowers were investigated by cyclic voltammetry, galvanostatic charge/discharge measurements and electrochemical impedance spectroscopy. Results showed that, CuO/Cu(OH)2 nanoflower exhibits the maximum specific capacitance of 459 F g−1 at 5 mV s−1 in 2 M KOH electrolyte. Further, EIS analysis shows lower ESR value, high power performance, excellent rate as well as frequency response of CuO/Cu(OH)2 nanoflowers. Ragone Plot ascertains good power and energy densities of CuO/Cu(OH)2 nanoflowers which confirms their suitability for energy storage devices. Thus, present investigation successfully reports the applicability of easy and inexpensive SILAR method for synthesis of CuO/Cu(OH)2 nanostructure to be utilized in supercapacitors.

  • Presenting highest supercapacitance for TiO2/MWNTs nanocomposites: Novel method
    Chemical Engineering Journal, 2014
    Co-Authors: Babasaheb R. Sankapal, Deepak P. Dubal, Hemant B. Gajare, Ratnakar Gore, Rahul R. Salunkhe, Heejoon Ahn
    Abstract:

    A facile two step, binder-free method is successfully developed for the synthesis of TiO2 nanodots on the walls of multi-walled carbon nanotubes (MWNTs). TiO2/MWNTs nanocomposite exhibited excellent specific capacitance and stability as supercapacitor electrode materials due to the synergistic effect of both components as well as the nanodots-like structure of TiO2, which increases the specific surface area of the nanocomposite. The TiO2/MWNTs prepared by this binder-free approach yields the largest specific and interfacial capacitances of 329Fg-1 and 52mFcm-2 at a scan rate of 0.005Vs-1, which is the utmost value of capacitance obtained till date. Importantly, TiO2/MWNTs showed remarkable rate capability with 6mFcm-2 capacitance at higher scan rate (0.4Vs-1) with good long-term cycling stability. The Ragone Plot of TiO2/MWNTs nanocomposite discovers better power and energy density values. Lastly, the method used here is promising for producing high performance supercapacitors which can be scalable for large area application for industrial route.

  • Surfactant-assisted morphological tuning of hierarchical CuO thin films for electrochemical supercapacitors
    Dalton transactions (Cambridge England : 2003), 2013
    Co-Authors: Deepak P. Dubal, Rudolf Holze, Girish S. Gund, Chandrakant D. Lokhande, Harsharaj S. Jadhav, Chan-jin Park
    Abstract:

    Copper oxide (CuO) thin films are successfully synthesized using a surfactant assisted chemical bath deposition method for application in supercapacitors. The effect of organic surfactants such as Triton X-100 and polyvinyl alcohol (PVA) on structural, morphological, surface areas and electrochemical properties of CuO thin films is investigated. The films deposited using organic surfactants exhibit different surface morphologies. It is observed that the organic surfactants play important roles in modifying the morphology, surface area and pore size distribution. Electrochemical analysis confirms that the nanostructures of the electrode material play a vital role in supercapacitors. The cyclic voltammetry studies show a considerably improved high rate pseudocapacitance of CuO samples synthesized using organic surfactants. The maximum specific capacitance of 411 F g−1 at 5 mV s−1 is obtained for the CuO sample prepared using an organic surfactant (Triton X-100). Furthermore, all the CuO nanostructures exhibit high power performance, excellent rate as well as long term cycling stability. The Ragone Plot ascertains better power and energy densities of CuO nanostructured samples. This is an easy and simple way to tune the morphology using surfactants which can be applied for other energy storage materials.

George H. Miley - One of the best experts on this subject based on the ideXlab platform.

  • Ragone Plot comparison of radioisotope cells and the direct sodium borohydride hydrogen peroxide fuel cell with chemical batteries
    IEEE Transactions on Energy Conversion, 2008
    Co-Authors: Michael Romer, George H. Miley, Nie Luo, Richard J. Gimlin
    Abstract:

    Radioisotope cells (RCs) and a direct sodium borohydride/hydrogen peroxide fuel cell ( FC) are compared to conventional chemical batteries through Ragone Plots of theoretical (RCs) and experimental (chemical batteries and FC) data. It is found that the RCs are projected to have superior specific energy but inferior specific power, while the borohydride/peroxide FC shows an impressive range for both parameters. Thus, RCs may be especially useful in battery charging, communications, or other applications that require a long-lived, low-power source or periodic pulses of energy. While the borohydride/peroxide FC can be scaled to a variety of high-power applications, it is especially well suited for space and undersea use where air independence is essential.

  • Ragone Plot Comparison of Radioisotope Cells and the Direct Sodium Borohydride/Hydrogen Peroxide Fuel Cell With Chemical Batteries
    IEEE Transactions on Energy Conversion, 2008
    Co-Authors: Michael Romer, George H. Miley, Richard J. Gimlin
    Abstract:

    Radioisotope cells (RCs) and a direct sodium borohydride/hydrogen peroxide fuel cell ( FC) are compared to conventional chemical batteries through Ragone Plots of theoretical (RCs) and experimental (chemical batteries and FC) data. It is found that the RCs are projected to have superior specific energy but inferior specific power, while the borohydride/peroxide FC shows an impressive range for both parameters. Thus, RCs may be especially useful in battery charging, communications, or other applications that require a long-lived, low-power source or periodic pulses of energy. While the borohydride/peroxide FC can be scaled to a variety of high-power applications, it is especially well suited for space and undersea use where air independence is essential.

Vijay Fulari - One of the best experts on this subject based on the ideXlab platform.

  • Morphological tuning of CuO nanostructures by simple preparative parameters in SILAR method and their consequent effect on supercapacitors
    Nano-Structures & Nano-Objects, 2016
    Co-Authors: Surendra Shinde, Deepak P. Dubal, Gajanan Ghodake, Dae Y. Kim, Vijay Fulari
    Abstract:

    Morphology-controlled synthesis of nanomaterials by tuning simple preparative parameters is an impressive path to develop diverse nanostructured materials. Here, we are exploring a successful example of fabrication of hierarchical CuO nanostructures (nanoflakes, nanopetals and diffused nanorods) by simply controlling temperature of reaction bath (3rd beaker) in SILAR method. These CuO nanostructures are further successfully employed as electrode material in supercapacitors. The correlation between electrochemical supercapacitive properties and nanostructures of CuO is investigated in detail. It is revealed that, the supercapacitive properties strongly depend on CuO nanostructures. The specific capacitance values for nanoflakes, nanopetals and diffused nanorods of CuO are found to be 664 F/g, 790 F/g and 695 F/g, respectively at 5 mV/s scan rate. Ragone Plot ascertains that CuO nanostructures obtained by SILAR method are potential candidates for high power and high energy density supercapacitors. In addition, EIS analyses show lower ESR values and excellent frequency response for CuO nanostructures.

  • Influence of Mn incorporation on the supercapacitive properties of hybrid CuO/Cu(OH)2 electrodes
    RSC Advances, 2015
    Co-Authors: Surendra Shinde, Deepak P. Dubal, Gajanan Ghodake, Pedro Gómez-romero, Sungyeol Kim, Vijay Fulari
    Abstract:

    Here, we are presenting the effect of Mn doping on the supercapacitive properties of CuO/Cu(OH)2 hybrid electrodes. Briefly, Mn doped CuO/Cu(OH)2 (Mn:CuO/Cu(OH)2) thin films have been synthesized by a successive ionic layer adsorption and reaction (SILAR) method which are further characterized by different physiochemical techniques. Our results revealed the formation of hybrid CuO/Cu(OH)2 thin films with significant morphological deviation through Mn doping. Moreover, considerable positive effect of Mn doping on the electrochemical properties of hybrid CuO/Cu(OH)2 electrodes have been witnessed. Later, the results suggest that at 3% Mn doping in CuO/Cu(OH)2 electrodes with nanoflower-like nanostructures exhibits the highest specific capacitance. The maximum specific capacitance achieved for a 3% Mn:CuO/Cu(OH)2 hybrid electrode is 600 F g−1 at 5 mV s−1 in 1 M Na2SO4 electrolyte. Additionally, a Ragone Plot confirms the potential of the Mn:CuO/Cu(OH)2 hybrid electrode for electrical energy storage applications.

  • Nanoflower-like CuO/Cu(OH)2 hybrid thin films: Synthesis and electrochemical supercapacitive properties
    Journal of Electroanalytical Chemistry, 2014
    Co-Authors: Surendra Shinde, Deepak P. Dubal, G.s. Ghodake, Dae-young Kim, Vijay Fulari
    Abstract:

    hybrid thin films have been synthesized by simple and inexpensive successive ionic layer adsorption and reaction (SILAR) method. Prepared CuO/Cu(OH)2 samples have been used for the structural and morphological characterization with different characterization techniques. The electrochemical supercapacitive properties of CuO/Cu(OH)2 nanoflowers were investigated by cyclic voltammetry, galvanostatic charge/discharge measurements and electrochemical impedance spectroscopy. Results showed that, CuO/Cu(OH)2 nanoflower exhibits the maximum specific capacitance of 459 F g−1 at 5 mV s−1 in 2 M KOH electrolyte. Further, EIS analysis shows lower ESR value, high power performance, excellent rate as well as frequency response of CuO/Cu(OH)2 nanoflowers. Ragone Plot ascertains good power and energy densities of CuO/Cu(OH)2 nanoflowers which confirms their suitability for energy storage devices. Thus, present investigation successfully reports the applicability of easy and inexpensive SILAR method for synthesis of CuO/Cu(OH)2 nanostructure to be utilized in supercapacitors.