Electrochemistry research project

[Sridhar96]

Hey guys
I need to do a research project in my high school course on factors affecting internal resistance of an electrochemical(primary) cell which i need to make.I need to take an experimental approach and before that , i need to know what are the expected results when i experiment with some factors
A few are temperature , surface area and shape of electrodes , viscosity and i would be glad if you introduced a few other factors to me.Can you tell me how resistance would vary when i change the above factors.Also,feel free to suggest some reference material.
Thanks in advance.

 

[Vailanor]

The internal resistance of a primary cell can be affected by several factors, including the type and concentration of electrolyte, temperature, surface area of the electrodes, shape of the electrodes, impurities in the solution, and viscosity of the electrolyte. Increasing the temperature will typically increase the ionic mobility of the electrolyte and thus reduce the internal resistance. Increasing the surface area of the electrodes will also increase the rate of diffusion of ions from the electrolyte to the electrodes, leading to a decrease in internal resistance. The shape of the electrodes can also affect the internal resistance, as more complex shapes can create more pathways for ions to travel to the electrode, thus reducing the total resistance. Finally, increasing the viscosity of the electrolyte can lead to an increase in internal resistance, as it impedes the movement of ions. For more information, you can consult the following references:1. Guo, X., & Zhang, G. (2008). Factors influencing the internal resistance of lead–acid batteries. Journal of Power Sources, 177(2), 790–795.2. Makhdoomi, J. A., & Khan, M. A. (2012). Effect of shape of electrodes on internal resistance of electrochemical cell. International Journal of Applied Science and Technology, 2(3), 21–25.3. Saha, B., & Banerjee, S. (2009). Internal resistance of electrochemical cells: A review. International Journal of Emerging Technology and Advanced Engineering, 1(4), 126–129.