### Abstract

A new model is presented for the metal-electrolyte interface which takes explicit account of the mobility of electrons at a metallic interface. The model can be described as a simple modification of the classical Stern-Gouy-Chapman double layer theory, but it contains an essential new feature of fundamentally quantum mechanical origin. A basic prediction of the theory is that at high enough temperatures the inverse 1/C//c of the compact part of the differential capacitance C//c is linear in the charge sigma //m per unit area for small sigma //m if adsorption does not occur. The authors confirm this for Hg, In, Ag, Cd and (Pb) with NaF (KF) electrolyte. The slope of the 1/C//c vs. sigma //m line is predicted in a simple model to be proportional to the inverse 1/ rho //m of the metallic charge density rho //m and predict the coefficient on the basis of two detailed models. The results are compared with experiment on a variety of metal electrolyte interfaces. The limitations of the theory are discussed.

Original language | English (US) |
---|---|

Pages (from-to) | 347-353 |

Number of pages | 7 |

Journal | Journal of electroanalytical chemistry and interfacial electrochemistry |

Volume | 150 |

Issue number | 1 - 2 |

State | Published - Jan 1 1982 |

Event | Electron and Mol Struct of Electrode-Electrolyte Interfaces, Proc of the Int Conf - Logan, UT, USA Duration: Jul 25 1982 → Jul 30 1982 |

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### Cite this

*Journal of electroanalytical chemistry and interfacial electrochemistry*,

*150*(1 - 2), 347-353.

**NEW MODEL OF THE DIFFERENTIAL CAPACITANCE OF THE DOUBLE LAYER.** / Price, D.; Halley, J W.

Research output: Contribution to journal › Conference article

*Journal of electroanalytical chemistry and interfacial electrochemistry*, vol. 150, no. 1 - 2, pp. 347-353.

}

TY - JOUR

T1 - NEW MODEL OF THE DIFFERENTIAL CAPACITANCE OF THE DOUBLE LAYER.

AU - Price, D.

AU - Halley, J W

PY - 1982/1/1

Y1 - 1982/1/1

N2 - A new model is presented for the metal-electrolyte interface which takes explicit account of the mobility of electrons at a metallic interface. The model can be described as a simple modification of the classical Stern-Gouy-Chapman double layer theory, but it contains an essential new feature of fundamentally quantum mechanical origin. A basic prediction of the theory is that at high enough temperatures the inverse 1/C//c of the compact part of the differential capacitance C//c is linear in the charge sigma //m per unit area for small sigma //m if adsorption does not occur. The authors confirm this for Hg, In, Ag, Cd and (Pb) with NaF (KF) electrolyte. The slope of the 1/C//c vs. sigma //m line is predicted in a simple model to be proportional to the inverse 1/ rho //m of the metallic charge density rho //m and predict the coefficient on the basis of two detailed models. The results are compared with experiment on a variety of metal electrolyte interfaces. The limitations of the theory are discussed.

AB - A new model is presented for the metal-electrolyte interface which takes explicit account of the mobility of electrons at a metallic interface. The model can be described as a simple modification of the classical Stern-Gouy-Chapman double layer theory, but it contains an essential new feature of fundamentally quantum mechanical origin. A basic prediction of the theory is that at high enough temperatures the inverse 1/C//c of the compact part of the differential capacitance C//c is linear in the charge sigma //m per unit area for small sigma //m if adsorption does not occur. The authors confirm this for Hg, In, Ag, Cd and (Pb) with NaF (KF) electrolyte. The slope of the 1/C//c vs. sigma //m line is predicted in a simple model to be proportional to the inverse 1/ rho //m of the metallic charge density rho //m and predict the coefficient on the basis of two detailed models. The results are compared with experiment on a variety of metal electrolyte interfaces. The limitations of the theory are discussed.

UR - http://www.scopus.com/inward/record.url?scp=0020150666&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0020150666&partnerID=8YFLogxK

M3 - Conference article

VL - 150

SP - 347

EP - 353

JO - Journal of Electroanalytical Chemistry

JF - Journal of Electroanalytical Chemistry

SN - 0022-0728

IS - 1 - 2

ER -