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Title: Single-Entity Electrocatalysis at Electrode Ensembles Prepared by Template Synthesis
Nanoelectrode ensembles (NEEs), prepared by Au template synthesis, are presented as a proof-of-concept sample platform to study individual electrodeposited materials by scanning electrochemical cell microscopy (SECCM). With this platform, the non-conductive membrane support does not contribute to the electrocatalytic activity recorded at each electrode. Use of low-density template membranes results in electrodes that are isolated because initial membrane pores are typically separated by significant (microscale) distances. Electrodeposition of catalytic nanoparticles onto the electrodes of the array and observation of electrocatalytic activity are demonstrated to be suitable for correlative SECCM voltammetric mapping and electron microscopy. Suitability of NEEs for studies of surface Au oxidation, hydrazine oxidation, and hydrogen evolution (hydrogen evolution reaction, HER), and at Pt particles on NEEs (Pt-NEEs) for HER is demonstrated.  more » « less
Award ID(s):
1808133
PAR ID:
10315404
Author(s) / Creator(s):
; ; ;
Date Published:
Journal Name:
Journal of The Electrochemical Society
Volume:
168
Issue:
12
ISSN:
0013-4651
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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