Beilstein J. Nanotechnol.2014,5, 141–151, doi:10.3762/bjnano.5.14
microscopy (4D SF/CD-SECM) was utilized for the investigation of the activity distribution of oxygen reduction catalysts. Carbon-supported Pt model catalyst powders have been immobilized in recessedmicroelectrodes and compared to a spot preparation technique. Microcavities serve as platform for the binder
). Furthermore, recessedmicroelectrodes fabricated by etching inlayed Au disk microelectrodes are demonstrated as a flexible platform for immobilization of catalyst powders for cd-mode SECM experiments. The microcavities (also referred to as micropores) have already demonstrated their applicability for integral
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Figure 1:
4D SF/CD-SECM for the investigation of the catalytic activity towards oxygen reduction. a) Scheme o...