Molecular unravelling of the mechanism of overpotential change at the carbon nanotubes-modified gold electrode surface

Using liquid secondary ion mass spectrometry, we in situ unraveled that the single walled carbon nanotubes-modified gold electrode surface is free of a dense adsorption phase and abundant in water molecules, which facilitated the electro-oxidation reaction of ascorbate. Such an understanding will expedite the knowledge-based development of electrochemical interfaces. Herein, we molecularly in situ probed the electrochemical interfacial chemistry altered by carbon nanotubes modification using electrochemical liquid SIMS technique.