Fluctuation enhanced electrochemical reaction rates at the nanoscale.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 20176966.
- Also identified by DOI 10.1073/pnas.0909240107 and PMC identifier 2842024.
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Abstract
The electrode potential constitutes a dynamical variable whenever an electrode is resistively coupled to the electric circuit. We show that at the nanoscale, the discreteness and stochasticity of an electron transfer event causes fluctuations of the electrode potential that render all elementary electrochemical reactions to be faster on a nanoelectrode than predicted by the macroscopic (Butler-Volmer) electrochemical kinetics. This phenomenon is substantiated by means of a generalized (electro)chemical master equation.
Medical subject headings
- Algorithms
- Electrochemical Techniques
- Nanotechnology