@article{32139, author = {Maurice Ayache and Dongyoun Jang and Jaroslaw S Syzdek and Robert Kostecki}, title = {Near-Field IR Nanoscale Imaging of the Solid Electrolyte Interphase on a HOPG Electrode}, abstract = {

The SEI layer on graphitic carbon electrodes is well known to protect effectively the electrode from further electrolyte reduction during long-term charge-discharge cycling process. Many different techniques have been applied to characterize the chemical and structural composition of this complex surface film. The standard vibrational optical spectroscopies, which offer molecular-level information are subject to the diffraction limit, which restricts their ability to probe at the nanoscale level of the SEI building blocks. This work exploits infrared apertureless near-field microscopy that operates below the diffraction limit to characterize the SEI layer on a model HOPG electrode. Variations in surface topography and chemical contrast are discussed in the context of SEI composition and function. The promise of near-field techniques for characterization of electrochemical interfaces is briefly evaluated.

}, year = {2015}, journal = {Journal of The Electrochemical Society}, volume = {162}, pages = {A7078 - A7082}, month = {08/2015}, issn = {0013-4651}, doi = {10.1149/2.0101513jes}, language = {eng}, }