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Title of Journal: J Solid State Electrochem

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Abbravation: Journal of Solid State Electrochemistry

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Springer-Verlag

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DOI

10.1007/bf02691844

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1433-0768

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Investigation of the electrocatalytic oxidation of

Authors: Miriam Rosenbaum Uwe Schröder Fritz Scholz
Publish Date: 2006/05/31
Volume: 10, Issue: 10, Pages: 872-878
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Abstract

In this communication we discuss the electrooxidation of the fermentation products formate and ethanol at platinum black modified electrodes under microbial fuel cell conditions ie at neutral pH room temperature and in microbial culture solutions The electrocatalytic oxidation was studied using cyclic voltammetry chronoamperometry and potentiostatic coulometry Current densities up to 6 mA cm−2 at 02 V oxidation potential and 97 coulombic efficiency were observed for the electrooxidation of 100 mM solutions of formate in pH 7 buffer solution Electrode deactivation could be successfully prevented using an oxidative potential reactivation procedure Polymer coating however fully stopped the formate oxidation As expected the electrooxidation of ethanol was less efficient—with a limiting current density being 600 μA cm−2

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  15. Development of nano IrO 2 composite-reinforced nickel–phosphorous electrodes for hydrogen evolution reaction
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