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Dive into the research topics where John J. Watkins is active.

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Featured researches published by John J. Watkins.


Electrochemical and Solid State Letters | 2003

Al2O3 film dissolution in aqueous chloride solutions

Chett Boxley; John J. Watkins; Henry S. White

The dissolution rate of the Al 2 O 3 passive film in near neutral (∼pH 6.7) 50 mM H 3 BO 3 /0.3 mM Na 2 B 4 O 7 .10 H 2 O solutions containing between 0 and 150 mM NaCI is reported. Dissolution rates are determined by analysis of the voltammetric anodic growth curves, using a model in which oxide growth is governed by high-field transport of ions within the film, while oxide dissolution at the oxide/electrolyte interface occurs by a potential-independent mechanism. Oxide dissolution rates increase from 3.5× 10 - 1 4 mol/cm 2 s in the absence of Cl - to 1.6 × 10 - 1 2 mol/cm 2 s in solutions containing 150 mM Cl - . No enhancement in dissolution rate is observed in NaBr solutions. The dependence of dissolution rate on Cl concentration is modeled assuming equilibrium adsorption of Cl - at the oxide/electrolyte interface, followed by desorption of an AlCl x complex. The results indicate that the oxide dissolution rate has a second-order dependence on the surface concentration of Cl - .


Analytical Chemistry | 2003

Zeptomole voltammetric detection and electron-transfer rate measurements using platinum electrodes of nanometer dimensions.

John J. Watkins; Jinyuan Chen; Henry S. White; Héctor D. Abruña; Emmanuel Maisonhaute; Christian Amatore


Langmuir | 2004

The role of the electrical double layer and ion pairing on the electrochemical oxidation of hexachloroiridate(III) at Pt electrodes of nanometer dimensions.

John J. Watkins; Henry S. White


Archive | 2010

Solid-state sodium-based secondary cell having a sodium ion conductive ceramic separator

Chett Boxley; W. Grover Coors; John J. Watkins


Langmuir | 2012

Resistive-pulse detection of multilamellar liposomes.

Deric A. Holden; John J. Watkins; Henry S. White


Journal of Electroanalytical Chemistry | 2005

Ion-pairing kinetics investigated using nanometer-size Pt electrodes

John J. Watkins; Henry S. White


Journal of Chemical Education | 2005

Electrochemistry at Nanometer-Scaled Electrodes.

John J. Watkins; Bo Zhang; Henry S. White


Journal of The Electrochemical Society | 2016

Understanding the Role of Mitochondrial Health in the Mechanism of Mitochondrial Bioelectrocatalysis

Sara J. Koepke; John J. Watkins; Shelley D. Minteer


Archive | 2014

Method for providing electrical potential from a sodium-based secondary cell

Chett Boxley; W. Grover Coors; John J. Watkins


Archive | 2010

Festkörper-sekundärzelle auf natriumbasis mit einem natriumionenleitenden keramikseparator

Chett Boxley; William Grover Coors; John J. Watkins

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Christian Amatore

École Normale Supérieure

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