Utilizing Park System's SECCM for Nanoscale Electrochemical Studies In energy storage and electrocatalysis, correlating electrochemical activity with nanostructured electrochemical interfaces (electrodes) 1 is considered the holy grail. It is difficult to analyze the local structure-activity relationship for these interfaces, or to measure the heterogeneity of electrode structures when employing traditional macroscopic electrochemical techniques. This is because macroscopic electrochemical investigations can only quantify the total electron transfer on a full sample. A novel strategy for the characterization of nanoscale electrochemical activity is required to solve this challenge. Scanning electrochemical cell microscopy (SECCM) is a novel pipette-based nanoelectrochemical scanning probe technique devised to study the local electrochemical features of electrode surfaces