Electrochemical kinetics of the hydrogen reaction on platinum in concentrated HCl(aq)

Derek M. Hall; Justin R. Beck; Serguei N. Lvov

doi:10.1016/j.elecom.2015.05.012

Electrochemical kinetics of the hydrogen reaction on platinum in concentrated HCl(aq)

Derek M. Hall, Justin R. Beck, Serguei N. Lvov

Research output: Contribution to journal › Article › peer-review

8 Scopus citations

Abstract

The hydrogen reaction in concentrated HCl(aq) solutions is a key reaction for the CuCl(aq)/HCl(aq) electrolytic cell. Here, electrochemical impedance spectroscopy (EIS) and linear sweep voltammetry (LSV) were used to obtain new data for the hydrogen reaction on platinum submerged in highly concentrated acidic solutions at 25 °C and 0.1 MPa. LSV and EIS data were collected for Pt in 0.5 mol/L H₂SO₄(aq), 1 mol/L HCl(aq) and 7.71 mol/L HCl(aq) solutions. It was found that exchange current density (j₀) values varied between 1 and 2 mA/cm². An equivalent circuit model was used to obtain comparable j₀ and limiting current density values from EIS data relative to values obtained with LSV data. It was found that as the concentration of acid increased, a noticeable decrease in the performance was observed.

Original language	English (US)
Pages (from-to)	74-77
Number of pages	4
Journal	Electrochemistry Communications
Volume	57
Issue number	1
DOIs	https://doi.org/10.1016/j.elecom.2015.05.012
State	Published - 2015

All Science Journal Classification (ASJC) codes

Electrochemistry

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title = "Electrochemical kinetics of the hydrogen reaction on platinum in concentrated HCl(aq)",

abstract = "The hydrogen reaction in concentrated HCl(aq) solutions is a key reaction for the CuCl(aq)/HCl(aq) electrolytic cell. Here, electrochemical impedance spectroscopy (EIS) and linear sweep voltammetry (LSV) were used to obtain new data for the hydrogen reaction on platinum submerged in highly concentrated acidic solutions at 25 °C and 0.1 MPa. LSV and EIS data were collected for Pt in 0.5 mol/L H2SO4(aq), 1 mol/L HCl(aq) and 7.71 mol/L HCl(aq) solutions. It was found that exchange current density (j0) values varied between 1 and 2 mA/cm2. An equivalent circuit model was used to obtain comparable j0 and limiting current density values from EIS data relative to values obtained with LSV data. It was found that as the concentration of acid increased, a noticeable decrease in the performance was observed.",

author = "Hall, {Derek M.} and Beck, {Justin R.} and Lvov, {Serguei N.}",

note = "Funding Information: The authors gratefully acknowledge the financial support of this work by U.S. Department of Energy{\textquoteright}s Office of Energy Efficiency and Renewable Energy via a subcontract with Argonne National Laboratory .",

year = "2015",

doi = "10.1016/j.elecom.2015.05.012",

language = "English (US)",

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journal = "Electrochemistry Communications",

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T1 - Electrochemical kinetics of the hydrogen reaction on platinum in concentrated HCl(aq)

AU - Hall, Derek M.

AU - Beck, Justin R.

AU - Lvov, Serguei N.

N1 - Funding Information: The authors gratefully acknowledge the financial support of this work by U.S. Department of Energy’s Office of Energy Efficiency and Renewable Energy via a subcontract with Argonne National Laboratory .

PY - 2015

Y1 - 2015

N2 - The hydrogen reaction in concentrated HCl(aq) solutions is a key reaction for the CuCl(aq)/HCl(aq) electrolytic cell. Here, electrochemical impedance spectroscopy (EIS) and linear sweep voltammetry (LSV) were used to obtain new data for the hydrogen reaction on platinum submerged in highly concentrated acidic solutions at 25 °C and 0.1 MPa. LSV and EIS data were collected for Pt in 0.5 mol/L H2SO4(aq), 1 mol/L HCl(aq) and 7.71 mol/L HCl(aq) solutions. It was found that exchange current density (j0) values varied between 1 and 2 mA/cm2. An equivalent circuit model was used to obtain comparable j0 and limiting current density values from EIS data relative to values obtained with LSV data. It was found that as the concentration of acid increased, a noticeable decrease in the performance was observed.

AB - The hydrogen reaction in concentrated HCl(aq) solutions is a key reaction for the CuCl(aq)/HCl(aq) electrolytic cell. Here, electrochemical impedance spectroscopy (EIS) and linear sweep voltammetry (LSV) were used to obtain new data for the hydrogen reaction on platinum submerged in highly concentrated acidic solutions at 25 °C and 0.1 MPa. LSV and EIS data were collected for Pt in 0.5 mol/L H2SO4(aq), 1 mol/L HCl(aq) and 7.71 mol/L HCl(aq) solutions. It was found that exchange current density (j0) values varied between 1 and 2 mA/cm2. An equivalent circuit model was used to obtain comparable j0 and limiting current density values from EIS data relative to values obtained with LSV data. It was found that as the concentration of acid increased, a noticeable decrease in the performance was observed.

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JF - Electrochemistry Communications

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