Gibbs energy for Lithiation in Lithium batteries

[JulesP]

TL;DR Summary

The calculation for lithiation in a Lithium Iron Phosphate battery

In writing up a paper on some research work on the effects of transients on Lithium Iron Phosphate batteries, I am laying out the thermodynamics and energetics for the reaction laid out below, but am having trouble finding the numbers for the reaction.

Does anyone know the correct figures to insert so I can get an overall Gibbs value for the reaction?

Thank you

 

[member38644]

for sharing your research work on Lithium Iron Phosphate batteries. I can understand the difficulty in finding the specific numbers for the reaction, as it is a complex and constantly evolving field of study. However, to calculate the Gibbs energy for lithiation in Lithium batteries, we need to consider the overall reaction:

Li + xLiFePO4 -> Li1+xFePO4

The Gibbs energy for this reaction can be calculated using the equation: ΔG = ΔH - TΔS, where ΔH is the enthalpy change and ΔS is the entropy change.

To find the enthalpy change, we need to know the standard enthalpy of formation for LiFePO4 and Li1+xFePO4. This information can be found in thermodynamic databases or literature sources. Similarly, the entropy change can also be found from these sources. Once we have these values, we can calculate the enthalpy and entropy change for the reaction and then use them to calculate the overall Gibbs energy.

I recommend consulting with experts in the field or looking for recent studies on Lithium Iron Phosphate batteries to get accurate and updated values for the enthalpy and entropy changes. Additionally, you can also try reaching out to the research team or authors of the papers you are citing for their specific values. I hope this helps you in your research and good luck with your paper.