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Title of Journal: J Appl Electrochem

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Abbravation: Journal of Applied Electrochemistry

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Springer Netherlands

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DOI

10.1016/j.bbalip.2006.09.018

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1572-8838

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Effects of temperature and current density on zinc

Authors: Qi Bo Zhang Yi Xin Hua Tie Guang Dong Dan Gui Zhou
Publish Date: 2009/01/24
Volume: 39, Issue: 8, Pages: 1207-
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Abstract

The effects of temperature and current density on cathodic current efficiency specific energy consumption and zinc deposit morphology during zinc electrodeposition from sulfate electrolyte in the presence of 1butyl3methylimidazolium hydrogen sulfate BMIMHSO4 as additive were investigated The highest current efficiency 937 and lowest specific energy consumption 2486 kWh t−1 were achieved at 400 A m−2 and 313 K with addition of 5 mg dm−3 BMIMHSO4 In addition the temperature dependence of some kinetic parameters for the zinc electrodeposition reaction was experimentally determined Potentiodynamic polarization sweeps were carried out to obtain the expression for each parameter as a function of temperature In the condition studied the exchange current density depended on temperature as lni 0 = −a/T + b and the charge transfer coefficient was constant Moreover the adsorption of the additive on cathodic surface obeyed the Langmuir adsorption isotherm The associated thermodynamic parameters indicated the adsorption to be chemical

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