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Platinum Electrodes for Oxygen Reduction Catalysis Designed by Ultrashort Pulse Laser Structuring
Author(s) -
Lange Karsten,
SchulzRuhtenberg Malte,
Caro Jürgen
Publication year - 2017
Publication title -
chemelectrochem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.182
H-Index - 59
ISSN - 2196-0216
DOI - 10.1002/celc.201600630
Subject(s) - platinum , electrochemistry , cyclic voltammetry , materials science , electrode , catalysis , laser , analytical chemistry (journal) , inorganic chemistry , optics , chemistry , physics , biochemistry , chromatography
Compact platinum plates have been micro‐ and nanostructured by using a one‐step process with ultrashort laser pulses. Depending on the parameters of the laser treatment (power, line distance, and scan speed), distinct surface structures can be produced by different spot energy densities. The platinum plates structured this way were tested for their electrochemical activity in the oxygen reduction reaction in aqueous HClO 4 by using cyclic voltammetry and rotating disk electrode approaches. The laser‐induced surface structuring yields a substantial enhancement in the electrochemical activity of platinum surfaces. The observed rise of the electrochemical activity by a factor of 1500 is attributed to the considerable increase of the surface area.