A Novel Reaction Rate Parametrization Method for Lithium-Ion Battery Electrochemical Modelling

Round 1

Reviewer 1 Report

Comments and Suggestions for Authors

The MS provides so-called electrochemical model of the Li-ion battery (LIB) based on an analysis of the Butler-Volmer equation. A brief but informative literature review,  model presentation and experimental validation are provided. Although this modelling involves simplifications and some previously described approaches, the MS as a whole presents a fairly original and interesting study that deserves to be published after revisions.

1. The Butler-Volmer equation with all parameters and idexes should be linked to the electrochemical equations under study. Meanwhile the mechanisms of electrode reactions and transfer processes in LIB are not discussed. Therefore all further calculations seem to be unrelated to anything.

2. Parts 2.2 and 2.3 suffer from a lack of clarification and discussion of simulated parameters. Please describe the physical meaning of such parameters as transfer coefficients, exchange current density, solid phase and electrolyte potentials.

3. This is not clear how duffusion polarization in solid and liquid phases was taken into account when calculating the voltage drop. Equation 11 includes only electrochemical and ohmic overvoltages.

4. Please fix the misprint "volage" (line 152) and correct the Figures 2 and 4 to make the corresponding curves and markers more contrasty and visible.

Author Response

We really thank reviewer 1 for their appreciation on our works and valuable comments. Pls find attached our responses to improve the manuscript, following the reviwers' suggestions

Author Response File: Author Response.docx

Reviewer 2 Report

Comments and Suggestions for Authors

The comments and suggestions are as follows.

1.     However, the data in the manuscript is not described in detail. For example, in Fig.3, the authors did not discuss the deeper meaning of the curves. Why was the blue curve like this? Did it have any relationship with the actual anode materials and electrolyte?

2.     In Fig.4, what about the error in fitting results?

3.     In figure 6, how to explain the difference between the former method and the new method?

4.     The simulation method can fit part of the actual electrochemical property of the LIBs.  In the paper, are the parameters derived from actual materials? In the current study, there are many different electrodes and electrolyte for LIBs. How is the universality of this new method?

 

Author Response

We thank reviewer 2 for the valuable comments on our manuscript. Please find attached our responses to questions and highlights in the changes made, as suggested.

Author Response File: Author Response.docx

Round 2

Reviewer 1 Report

Comments and Suggestions for Authors

Despite the response, the authors did not change the text according my first comment. A brief discussion of mechanisms of electrode reactions and transfer processes in LIBs should be given and their relationship with the parameters of the Butler-Volmer equation should be shown. The Figs. 2 and 4 are still not improved. In this regard, I am forced to once again recommend that the article be revised.

Author Response

We thank reviewer 1 for their valuable comments that we integrated in the text and we do apologize for the figures that were not properly uploaded in the latest version.

Author Response File: Author Response.docx

Round 3

Reviewer 1 Report

Comments and Suggestions for Authors

Thank you for your response and revisions. Now I can recommend the MS for publication.