“…In recent years, many scholars have focused on the design and investigation of new electrodes [13,14]. With the development of micromachining, microelectrodes have become indispensable as working electrodes in electrochemical analysis [15,16]. Compared with traditional large electrodes, microelectrodes have many advantages, including a relatively high current density, fast mass transfer rate, low time constant, high signal-to-noise ratio, and low IR drop [17][18][19].…”