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A compact analytical formalism for current transients in electrochemical systems

DSpace at IIT Bombay

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Title A compact analytical formalism for current transients in electrochemical systems
 
Creator NAIR, PR
ALAM, MA
 
Subject CHRONOAMPEROMETRIC CURRENT
SWEEP VOLTAMMETRY
ELECTRODES
MICROELECTRODES
DIFFUSION
MICROSCOPY
DISK
NANOBIOSENSORS
FLUCTUATIONS
SIMULATION
 
Description Micro- and nanostructured electrodes form an integral part of a wide variety of electrochemical systems for biomolecular detection, batteries, solar cells, scanning electrochemical microscopy, etc. Given the complexity of the electrode structures, the Butler-Volmer formalism of redox reactions, and the diffusion transport of redox species, it is hardly surprising that only a few problems are amenable to closed-form, compact analytical solutions. While numerical solutions are widely used, it is often difficult to integrate the insights gained into the design and optimization of electrochemical systems. In this article, we develop a comprehensive analytical formalism for current transients that not only anticipate the responses of complex electrode structures to complicated voltammetry measurements, but also intuitively interpret diverse experiments such as redox detection of molecules at nanogap electrodes, scanning electrochemical microscopy, etc. The results from the analytical model, well supported through detailed numerical simulations and experimental data from the literature, have broad implications in the design and optimization of nanostructured electrodes for healthcare and energy storage applications.
 
Publisher ROYAL SOC CHEMISTRY
 
Date 2014-10-15T14:22:22Z
2014-10-15T14:22:22Z
2013
 
Type Article
 
Identifier ANALYST, 138(2)525-538
http://dx.doi.org/10.1039/c2an35346f
http://dspace.library.iitb.ac.in/jspui/handle/100/15091
 
Language en