Scanning Electrochemical Cell Microscopy SECCM

Scanning electrochemical cell microscopy (SECCM) is a recent innovation [161, 167] in electrochemical scanning probe microscopy [168] that has been proven particularly powerful for visualizing electroactivity. In the case of HOPG, the SECCM response also informs on the location of the measurement, that is, basal 

---

Scanning electrochemical cell microscopy (SECCM) uses a capillary with double compartment (dual barrel capillary) pulled to a sharp opening (Fig. 13b) as scanning probe [36]. Both compartments of the capillary are filled with the electrolyte solution, and a quasi-reference counter electrode (QRCE) is inserted in each compartment (Fig. 13a). 

Fig. 13 a Scanning Electrochemical Cell Microscopy (SECCM). b SEM image of the tip of a double barrel capillary. Reproduced from [37] with the permission of Wiley... 

Scanning electrochemical cell microscopy (SECCM) also allows acquisition of high-resolution images of the reactivity of an electrode surface. 

Patten, H. V. Lai, S. C. Macpherson, J. V. Unwin, P. R., Active sites for outer-sphere, inner-sphere, and complex multistage electrochemical reactions at polycrystalline boron-doped diamond electrodes (pBDD) revealed with scanning electrochemical cell microscopy (SECCM). Analytical Chemistry 2012, 84, 5427-5432. 

Recently, by replacing the SECM tip with a microcapillary tip, Dr. Zhan and coworkers at Xiamen University developed a scanning electrochemical cell microscopy (SECCM) as a nanofabrication method (see in Fig. 20). ... 

Ebejer, N., Schnippering, M., Colburn, A. W., Edwards, M. A., Unwin, P. R. Localized high resolution electrochemistry and multi-functional imaging Scanning electrochemical cell microscopy (SECCM). 

---