Cyclic Voltammetric Calorimetry Studying the Deposition of Copper of Pt Electrodes

Authors

Yongchun Zhu, Shenyang Medical College,Shenyang 110031)(University College London,London,WC1HOAJ;
Robin H J Clark, Shenyang Medical College,Shenyang 110031)(University College London,London,WC1HOAJ;

Abstract

In the present paper,cyclic voltammetric calorimetry has been used to study thedeposition of copper on platinum electrode from LiClO_4 aqueous solution. Cyclic voltammetricthermogram and cyclic voltammetric differential thermogram show that the deposition of copper on theelectrode is an exothermal process with a strong interaction between copper and platinum layer(-3227.0 kJ /mol).The electrochemical oxidation of the deposited copper is composed of twoprocesses :an endothermal activation process with 747.0 kJ/mol of activation enthalpy,and anexothermal oxidation reaction with-189.9 kJ/mol of the reaction enthalpy, which are accord withthe data from the theoritical estimation and thermodynamic handbook respectively.

Keywords

Cyclic voltammetric calorimetry, Copper, Platinum electrode, Underpotentialdeposition

DOI Link

https://doi.org/10.61558/2993-074X.1315

Publication Date

1995-11-28

Online Available Date

1995-11-28

Revised Date

1995-11-28

Received Date

1995-11-28

Recommended Citation

Yongchun Zhu, Robin H J Clark. Cyclic Voltammetric Calorimetry Studying the Deposition of Copper of Pt Electrodes[J]. Journal of Electrochemistry, 1995 , 1(4): 427-431.
DOI: 10.61558/2993-074X.1315
Available at: https://jelectrochem.xmu.edu.cn/journal/vol1/iss4/8

References

1KolbDM．AdvancesinElectrochemistryandElectrochemicalEngineering．EditedbyGerischerH，TobiasC．NewYork：Pergamon，1978：1252HowellSY，AbrunaHD．Insitux－rayabsorptionspectroscopystudiesofcopperunderpotentiallydepositedintheabeenceandpresenceofchlorideonplatinum（111）．Langmuir，1993，9：2460～24693BockrisJO，EnyoM．Mechanismofelectrodepositionanddissolutionprocessesofcopperinaqueoussolutions．Trans．FaradaySoc．，1961，57：ll87～12024EyringH．PhysicalchemistryVol：ⅨB：Electrochemistry．NewYorkandLondon：Academicpress，1970：611～7235SherfeyJM，BrennerA．Electrochemicalcalorimetry．J．Electrochem．Soc．，1956，105：665～6726ZhuY，ClarkRHJ，DavidGH．Anovelisothermalelectrochemicalmicrocalorimeter．13thIUPACconferenceonchemicalthermodynamics．Clermont－Ferrand，France，July17－22，1994：217RandlesJEB，SomertonKW．Kineticsofrapidelectrodereactions，Trans．FaradaySoc．，1952，48：951～9558DeanJA．Lange′shandbookofchemistry．14thEdition，McGraw－Hill，Inc．，1992，6：77