What Information Can Be Gleaned from a Nyquist Plot?
A Nyquist plot can offer a wealth of information about a nanomaterial's electrochemical properties:
- Resistive and Capacitive Behavior: The plot can distinguish between resistive and capacitive elements in the system. A semicircular arc typically indicates charge transfer resistance and double-layer capacitance. - Diffusion Characteristics: A straight line at a 45-degree angle suggests diffusion-controlled processes, often observed in porous nanomaterials. - Frequency Response: The plot can reveal how the material's impedance changes over a range of frequencies, which is crucial for applications like frequency-selective sensors.
