Enhancement on PrBa0.5Sr0.5Co1.5Fe0.5O5 Electrocatalyst Performance in the Application of Zn-Air Battery
Round 1
Reviewer 1 Report
Title: Highly Efficient Platinum-PrBa0.5Sr0.5Co1.5Fe0.5O5 Electrocatalyst of Rechargeable Zn-air Battery
Authors: Chengcheng Wang, Zian Chen, Xinlei Luo, Ziheng Zheng, Bingxue Hou, Morteza Gholizadeh, Xiang Gao, Xincan Fan
Recommendation: Minor revisions needed.
General Comments:
In this study, PrBa0.5Sr0.5Co1.5Fe0.5O5 (PBSCF) double perovskite was prepared by citrate-EDTA method and the optimized PBSCF-Pt/C composite was used as potential ORR/OER bifunctional electrocatalysts under alkaline condition. The author claims that PBSCF double perovskite manifest high activity for the ORR/OER. The authors have done a very interesting study, and the manuscript is well written, therefore the manuscript can be accepted. However, below are my suggestions for minor revisions to the manuscript:
1. page 3, Figure 1 a: some peaks are presented on the diffraction pattern and are not indexed. Please pay attention and index the diffraction peaks from 2Θ: 26, 36, 43 and 74;
2. page 3, Figure 1 b: the tiny particles cannot belong to a second phase?
Some textual errors are found in the text, such as: L44 – delete” to”; L63 – OER, L64 – electrochemical; L78 – define JM; L100 – LSV – linear sweep voltammetry; L105 – …at constant current density; L128 – electrocatalytic etc.
Author Response
Please see the attachment.
Author Response File: 
Author Response.pdf
Reviewer 2 Report
A new Pt-PrBa0.5Sr0.5Co1.5Fe0.5O5 electrocatalyst is discussed in this work. The paper can be revised before considering the publication. Pt is widely used in the field, the loading amount should be evaluated. Relevant recent work should be discussed Front Chem. 2022; 10: 865214. The use of Ba0.5Sr0.5Co0.8Fe0.2O3-δ perovskite materials should be further discussed and considered. The relevant content is not clear at that moment. Moreover, the stability of the structures should be further considered. The materials may be reconstructed after stability test, it should be considered in details. Similar work can be referred in the introduction, such as Energy Environ. Sci., 2022, 15, 2386–2396. The XPS fitting is strange, the XPS survey spectra and O1s spectra should be revised.
Author Response
Please see the attachment.
Author Response File: Author Response.pdf
Reviewer 3 Report
Ref: catalysts-1789873
Title: Highly Efficient Platinum-PrBa0.5Sr0.5Co1.5Fe0.5O5 Electrocatalyst of Rechargeable Zn-air Battery
Journal: Crystals
Corresponding Author: Chengcheng Wang
Reviewer Comments:
Fabrication of electrocatalysts materials based on Highly Efficient Platinum-PrBa0.5Sr0.5Co1.5Fe0.5O5 electrocatalysts is important in the application of Zn-air batteries for oxygen reduction reaction and oxygen evolution reaction (ORR/OER) that has been discussed in this paper. This topic is highly intriguing in terms of introducing the new electrocatalysts materials for Zn-air batteries and is in line with the research objectives of the crystals journal. So, I believe it will be beneficial to readers of this journal. However, this work contains certain serious flaws that must be addressed before it can be accepted.
1. The title of this paper is suggested to highlight the key findings of this study. Consider the example of titles is listed below.
a. https://www.sciencedirect.com/science/article/abs/pii/S0167577X21020863
b. https://nanoscalereslett.springeropen.com/articles/10.1186/s11671-018-2836-3
c. https://www.sciencedirect.com/science/article/abs/pii/S0032386119306743
2. The abstract must identify the key findings of this work that will be addressed in this work. What are the advantages of electrocatalysts materials? The current problem of common electrocatalysts materials is not really discussed.
3. The English language should be thoroughly verified.
4. The introduction part should be written more professionally, with more up-to-date sources. The research gap should be communicated more clearly, along with the specific need for the completed study activity. What are the advantages of the Zn-air battery application? The advantages of present electrocatalysts materials compared to previous works also need to be discussed. Previous work related to this work should be discussed to highlight the significance of this study.
5. In the experimental section. The author can show in the figure to make clear what the study will be discussed.
6. In the XRD discussion, the importance of the perovskite phase should be discussed.
7. For the EDX result, the scale bar is not clear. Should be changed. Besides, the discussion about the PBSCF element should be there.
8. For the TEM images are also not so clear. Should be changed.
9. For, the FESEM image, what will happen if the loading of manganese increases?
10. Please make the comparison with the previous study in terms of ORR and OER performance and Zn-air battery performance to highlight the potential of this study.
After the suggestion from the reviewer has been solved, this study is preferred to acceptance for publication.
Comments for author File: Comments.pdf
Author Response
Please see the attachment.
Author Response File: Author Response.pdf
