Rapid Characterization of Hydrogen Evolution Electrocatalyst Spot Arrays by the Pulsed-Potential Substrate Generation/Tip Collection Mode of Scanning Electrochemical Microscopy

DOI

10.2991/icsmme-15.2015.15How to use a DOI?

Keywords

Scanning Electrochemical Microscopy, Energy Materials, HER Catalysts, Substrate Generation-Tip Collection Mode.

Abstract

A rapid method for the characterization of hydrogen evolution catalysts by scanning electrochemical microscopy (SECM) with decreased H2 diffusion layer overlap is introduced. The double-pulsed substrate generation/tip collection (SG/TC) mode was employed by switching the substrate electrode potential between an inactive potential and an HER active potential while the tip electrode was moved to each catalyst spot and collected the H2. The optimal pulse potential and pulse width were selected using 3D COMSOL simulation. The reliability of this method was confirmed by the good agreement with the results obtained by the traditional SECM screening techniques.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Minshu Du
PY  - 2015/11
DA  - 2015/11
TI  - Rapid Characterization of Hydrogen Evolution Electrocatalyst Spot Arrays by the Pulsed-Potential Substrate Generation/Tip Collection Mode of Scanning Electrochemical Microscopy
BT  - Proceedings of the 2015 International Conference on Structural, Mechanical and Material Engineering
PB  - Atlantis Press
SP  - 60
EP  - 63
SN  - 2352-5401
UR  - https://doi.org/10.2991/icsmme-15.2015.15
DO  - 10.2991/icsmme-15.2015.15
ID  - Du2015/11
ER  -