I want to calculate conductivity of MoO3 NRs from its CV curve. Please describe in details including method of preparation solution and any other things.
Hi,
From cyclic voltammetry, the calculation of conductivity is not much consistent rather you should opt EIS. Whilst to, from cyclic voltammetry you can observe the anodic and cathodic peak currents and On the basis of these peak currents you can calculate the aerial capacitance and diffusion constants from CV graph.
Dear Nahid Kaisar,
could you, please, illustrate more, your material : MoO3-NRs; are they (MoO3-NRs) supported on a conducting[1] substrate ?
1. Controlled growth of MoO3 nanorods on transparent conducting substrates http://www.sciencedirect.com/science/article/pii/S0167577X14014025#
Dear Ioannis Samaras,
MoO3-NRs are not coated on conducting surface, substrate is non conducting material.
Then, I am afraid that CV can not help you much, in order to measure the electrical conductivity of your material. If an EIS technique[1] is available, then, it could give you more infos[2] (at the higher frequencies[3,4], 10kHz to 1MHz) about the conductivity of the MoO3-NR, supported on a non conducting substrate.
1. EIS300 Electrochemical Impedance Techniques... https://www.gamry.com/application-notes/EIS/potentiostatic-eis-tutorial/
2. Impedance Spectroscopy: Applications to Electrochemical and Dielectric Phenomena http://eu.wiley.com/WileyCDA/WileyTitle/productCd-0470627786.html
3. A Perspective on Electrochemical Impedance Analysis http://www.electrochem.org/dl/interface/spr/spr09/spr09_p62-66.pdf
4. Revisiting the electrochemical impedance behaviour of the LiFePO4/C cathode https://link.springer.com/content/pdf/10.1007%2Fs12039-013-0407-9.pdf
You probably should look for a Four probe test!! for that you need to make a pellet of your sample and do a four probe test to get the conductivity. CV is not of much help to obtain conductivity measurements and given that you have a non-conducting substrates. Also, having your material coated on a conducting substrate should help you obtain conductivity measurements from impedance spectroscopy. But again, this calculations are based from resistivity...but will do the job...
Good luck
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