Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
182300 | Electrochemistry Communications | 2007 | 4 Pages |
Abstract
A platinum coated electrode, which creates a magnetic field of 25 mT and a field gradient of order 105 T m−1 within 100 nm of the electrode surface is produced by embedding an array of CoPt nanowires in an alumina membrane. There is an enhancement by up to a factor of three for a model oxygen reduction reaction in an alkaline medium when the nanowires in the electrode are in a magnetized state. We suggest that the enhancement of the oxygen reduction current is associated with an increase of concentration of HO2- on the surface of the electrode by the magnetic field gradient.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Chemical Engineering (General)
Authors
N.B. Chaure, F.M.F. Rhen, J. Hilton, J.M.D. Coey,