Novel SrO-Containing Glass-Ceramic Sealants for Solid Oxide Electrolysis Cells (SOEC): Their Design and Characterization under Relevant Conditions

Round 1

Reviewer 1 Report

The authors presented the development of SrO-containing glass-ceramic sealant with high thermo-mechanical compatibility and electrical resistivity for solid oxide electrolysis cell (SOEC) applications. This is a well-written manuscript. Before publication, the manuscript needs a minor revision in the light of the following aspects:

1. There are a number of abbreviations in the abstract and body of the article that should be accompanied by the full name. For instance, page 1, line 11, SrO, CaO, Al₂O₃, and page 2, line 70, BaO. 

2. There are some minor punctuation errors, so a final proof check may be helpful to be consistent. Page 1, last sentence of the abstract: The punctuation in ,, is incorrect. Consider changing the punctuation.

3. Page 1, lines 28 and 29: The word "device" is repeatedly used. Consider using other synonyms. Consider writing the second sentence of the first paragraph in a more clear voice. As a suggestion: "A SOFC converts chemical energy into electrical energy [2–5] while a SOEC converts chemical energy into electricity by directly electrolyzing water and then using electricity obtained from a variety of renewable energy sources."

4. In many places, references are missing. For example, on page number 2, the second paragraph (lines 64 to 69), and on page number 3, lines 100 to 104 need references. 

Author Response

Thanks for your kind comment. Please see the attachment for the detailed reply for each comment 

Author Response File: Author Response.pdf

Reviewer 2 Report

1. “Error! Reference source not found” to be corrected in the paper.

2. The origin of different temperature error measured from DTA could be explained.

3. The author explains only two crystalline phases from the XRD, there are few peaks unattributed to the phases, for example peaks around 35 and 40 for NS9I glass.

Author Response

Thanks for your kind comments. Please see the attachment for detail reply to each comment.

Regards

Author Response File: Author Response.pdf

Reviewer 3 Report

Reviewer:

 The aim of the study is to investigate the development of SrO-containing glass sealants ceramic material entitled “Novel SrO-containing glass-ceramic sealants for solid oxide 2 electrolysis cells (SOEC): their design and characterization under relevant conditions". The analysis done is detailed and well-organized, which gives plenty of its merits. However, the discussion is a bit poor, the authors should elaborate on the discussion of the results obtained. Additionally, the main problem with this article lies in the experimental design and statistical analysis.

Conclusions may be more appealing if authors include key insights and future prospects, rather than just summarizing the results.

Common comments are as follows:

1. The English need to be improved and please double-check grammar and spelling.

2. The introduction section should be properly revised.

3. Materials and Methods : The compositional range on the glass systems is: SiO2 46-60 mol%, SrO 30-40 mol%, 116 CaO 2-12 mol%, Al2O3 2-7 mol%, B2O3 1-8 mol%, Y2O3 0-5 mol%, MgO 0-1 mol%. If possible provide the correct proportion of each compound.

4. please provide DSC data for understanding thermoanalytical behavior.

4. Conclusions may be more appealing if authors include key insights and future prospects, rather than just summarizing the results.

Author Response

Thanks for your kind comments. Kindly see the attachment for detailed reply to each comment.

Kind regards

Author Response File: Author Response.pdf

Round 2

Reviewer 3 Report

Well-improved, please accept in the current form.

Author Response

Dear Reviewer

Many thanks for accepting the paper

Regards