The Experts below are selected from a list of 33 Experts worldwide ranked by ideXlab platform

E. C Darcy - One of the best experts on this subject based on the ideXlab platform.

  • Calorimetric determination of the thermoneutral Potential of Li/BCX and Li/SOCl2 Cells
    Journal of The Electrochemical Society, 1992
    Co-Authors: Egwu Eric Kalu, Ralph E. White, E. C Darcy
    Abstract:

    Results are presented of the calorimetric determination of the effective thermoneutral Potential, Eetp, of Li/BCS and Li/SOCl2 Cells in the temperature range 0-60 C through a continuous recording of the Cell voltage, heat flow, and current. The average effective thermoneutral Potential at 25 C was 4.0 and 3.84 V for BCX and Li/SOCl2 Cells, respectively. Based on the classical approach, the Reversible Cell Potential, Er, and temperature dependence of Reversible Cell Potential, dEr/dT, for BCX Cell were 3.74 V and -0.952 mV/K, respectively, and for Li/SOCl2, Er = 3.67 V and dEr/dT = 0.567 mV/K. The thermal polarization (Eetp-E1), where E1 is the load voltage, for both Cells, showed that they are the most thermally efficient near 40 C. An overall reaction proposed for the BCX chemistry is supported by the calculated thermodynamic parameters.

  • Measurements of the Fundamental Thermodynamic Parameters of Li/BCX and Li / SOCl2 Cells
    Journal of The Electrochemical Society, 1992
    Co-Authors: Egwu Eric Kalu, Ralph E. White, E. C Darcy
    Abstract:

    Two experimental techniques - equilibrium or Reversible Cell discharge and measurement of open circuit Potential as a function of temperature - are used to determine the thermodynamic data needed to estimate the heat generation characteristics of Li/BCX and Li/SOCl2 Cells. The results obtained showed that the Reversible Cell Potential, the temperature dependence of the Reversible Cell Potential, and the thermoneutral Potential of the BCX Cell were 3.74 V, -0.857 +/- 0.198 mV/K, and 3.994 +/- 0.0603 V, respectively. The respective values obtained for the Li/SOCl2 Cell were 3.67 V, -0.776 +/- 0.255 mV/K, and 3.893 +/- 0.0776 V. The difference between the thermoneutral Potential of Li/BCX and Li/SCl2 Cells is attributable to the difference in their electroactive components.

Laijun Wang - One of the best experts on this subject based on the ideXlab platform.

  • in situ electrochemical impedance spectroscopy measurement of anodic reaction in so2 depolarized electrolysis process
    Chemical Engineering and Processing, 2015
    Co-Authors: Ping Zhang, Songzhe Chen, Laijun Wang
    Abstract:

    Abstract SO 2 depolarized electrolysis (SDE) is an important reaction in the hybrid sulfur process, which is one of the most promising approaches for mass hydrogen production without CO 2 emission. The Potential loss of SDE process could be separated into four components, i.e., Reversible Cell Potential, anode over Potential, cathode over Potential, and ohmic loss. Thus far, the total Cell Potential for the SO 2 depolarized electrolyzer has been identified to be dominantly controlled by the sulfuric acid concentration of the anolyte and the temperature of the electrolysis process. In this work, an in-situ electrochemical impedance spectroscopy measurement of the anodic SDE reaction was conducted. The results show that anodic over Potential is mainly caused by the SO 2 oxidation reaction rather than ohmic resistance or mass transfer limitation. This study extends the understanding of the SDE process and gives suggestions for further improvements in SDE performance.

Egwu Eric Kalu - One of the best experts on this subject based on the ideXlab platform.

  • Calorimetric determination of the thermoneutral Potential of Li/BCX and Li/SOCl2 Cells
    Journal of The Electrochemical Society, 1992
    Co-Authors: Egwu Eric Kalu, Ralph E. White, E. C Darcy
    Abstract:

    Results are presented of the calorimetric determination of the effective thermoneutral Potential, Eetp, of Li/BCS and Li/SOCl2 Cells in the temperature range 0-60 C through a continuous recording of the Cell voltage, heat flow, and current. The average effective thermoneutral Potential at 25 C was 4.0 and 3.84 V for BCX and Li/SOCl2 Cells, respectively. Based on the classical approach, the Reversible Cell Potential, Er, and temperature dependence of Reversible Cell Potential, dEr/dT, for BCX Cell were 3.74 V and -0.952 mV/K, respectively, and for Li/SOCl2, Er = 3.67 V and dEr/dT = 0.567 mV/K. The thermal polarization (Eetp-E1), where E1 is the load voltage, for both Cells, showed that they are the most thermally efficient near 40 C. An overall reaction proposed for the BCX chemistry is supported by the calculated thermodynamic parameters.

  • Measurements of the Fundamental Thermodynamic Parameters of Li/BCX and Li / SOCl2 Cells
    Journal of The Electrochemical Society, 1992
    Co-Authors: Egwu Eric Kalu, Ralph E. White, E. C Darcy
    Abstract:

    Two experimental techniques - equilibrium or Reversible Cell discharge and measurement of open circuit Potential as a function of temperature - are used to determine the thermodynamic data needed to estimate the heat generation characteristics of Li/BCX and Li/SOCl2 Cells. The results obtained showed that the Reversible Cell Potential, the temperature dependence of the Reversible Cell Potential, and the thermoneutral Potential of the BCX Cell were 3.74 V, -0.857 +/- 0.198 mV/K, and 3.994 +/- 0.0603 V, respectively. The respective values obtained for the Li/SOCl2 Cell were 3.67 V, -0.776 +/- 0.255 mV/K, and 3.893 +/- 0.0776 V. The difference between the thermoneutral Potential of Li/BCX and Li/SCl2 Cells is attributable to the difference in their electroactive components.

Ping Zhang - One of the best experts on this subject based on the ideXlab platform.

  • in situ electrochemical impedance spectroscopy measurement of anodic reaction in so2 depolarized electrolysis process
    Chemical Engineering and Processing, 2015
    Co-Authors: Ping Zhang, Songzhe Chen, Laijun Wang
    Abstract:

    Abstract SO 2 depolarized electrolysis (SDE) is an important reaction in the hybrid sulfur process, which is one of the most promising approaches for mass hydrogen production without CO 2 emission. The Potential loss of SDE process could be separated into four components, i.e., Reversible Cell Potential, anode over Potential, cathode over Potential, and ohmic loss. Thus far, the total Cell Potential for the SO 2 depolarized electrolyzer has been identified to be dominantly controlled by the sulfuric acid concentration of the anolyte and the temperature of the electrolysis process. In this work, an in-situ electrochemical impedance spectroscopy measurement of the anodic SDE reaction was conducted. The results show that anodic over Potential is mainly caused by the SO 2 oxidation reaction rather than ohmic resistance or mass transfer limitation. This study extends the understanding of the SDE process and gives suggestions for further improvements in SDE performance.

Ralph E. White - One of the best experts on this subject based on the ideXlab platform.

  • Calorimetric determination of the thermoneutral Potential of Li/BCX and Li/SOCl2 Cells
    Journal of The Electrochemical Society, 1992
    Co-Authors: Egwu Eric Kalu, Ralph E. White, E. C Darcy
    Abstract:

    Results are presented of the calorimetric determination of the effective thermoneutral Potential, Eetp, of Li/BCS and Li/SOCl2 Cells in the temperature range 0-60 C through a continuous recording of the Cell voltage, heat flow, and current. The average effective thermoneutral Potential at 25 C was 4.0 and 3.84 V for BCX and Li/SOCl2 Cells, respectively. Based on the classical approach, the Reversible Cell Potential, Er, and temperature dependence of Reversible Cell Potential, dEr/dT, for BCX Cell were 3.74 V and -0.952 mV/K, respectively, and for Li/SOCl2, Er = 3.67 V and dEr/dT = 0.567 mV/K. The thermal polarization (Eetp-E1), where E1 is the load voltage, for both Cells, showed that they are the most thermally efficient near 40 C. An overall reaction proposed for the BCX chemistry is supported by the calculated thermodynamic parameters.

  • Measurements of the Fundamental Thermodynamic Parameters of Li/BCX and Li / SOCl2 Cells
    Journal of The Electrochemical Society, 1992
    Co-Authors: Egwu Eric Kalu, Ralph E. White, E. C Darcy
    Abstract:

    Two experimental techniques - equilibrium or Reversible Cell discharge and measurement of open circuit Potential as a function of temperature - are used to determine the thermodynamic data needed to estimate the heat generation characteristics of Li/BCX and Li/SOCl2 Cells. The results obtained showed that the Reversible Cell Potential, the temperature dependence of the Reversible Cell Potential, and the thermoneutral Potential of the BCX Cell were 3.74 V, -0.857 +/- 0.198 mV/K, and 3.994 +/- 0.0603 V, respectively. The respective values obtained for the Li/SOCl2 Cell were 3.67 V, -0.776 +/- 0.255 mV/K, and 3.893 +/- 0.0776 V. The difference between the thermoneutral Potential of Li/BCX and Li/SCl2 Cells is attributable to the difference in their electroactive components.