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Stoichiometric Maximum Concentration - Lithium Ion Batteries

  1. Jun 15, 2009 #1
    Hi,

    I am trying to test the validity of a simple lithium ion battery model that I consctructed to better understand the internal stress caused by the diffusion. I have referenced several papers and I am currently looking at how to calclualte the partial molar volume for a given material. To do this I need to determine the stoichiometric maximum concentration(cmax)...ie the number of moles per volume that can possibly fit into a material. I am currently trying to figure out how many lithium ions can fit into a nickel-tin alloy (Ni3Sn4).

    I have not been able to find any information about this. My guess is that I am going to have to divide the volume of lithium atoms into the spacing of the nickel-tin alloy.

    Is there any set way of how to do this, or way to figure out the space avialable in the alloy?
    Also, if there is another way to determine the partial molar volume besides that given by the equation to follow, I am all ears.


    PMV = ((strain)*3) / ((y2-y1)(cmax))


    Any suggestions would be greatly appreciated.

    Thanks
     
  2. jcsd
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