Large-Area Laying of Soft Textile Power Generators for the Realization of Body Heat Harvesting Clothing

Round 1

Reviewer 1 Report

The authors report here soft textile-based power generators for harvesting body heat to power wearable electronics. This study shows no substantial improvement of thermoelectric performance. Although TEG is suitable for flexibility the thermoelectric performance is too low. The electrical conductivity (2.08 ´ 10^-6 S/m) is too low, almost comparable to the insulator. So, power factor is also too low. Authors claimed that theremoelectric performance of TEG is the highest for low temperature difference, however with no reference. Authors better compare their results with the previously reported values. There are also other issues need to be addressed before publication.

The text is overloaded with too many figures. Figure 2, and 3 better to be merged into one figure; use two column space if required. Figure 4 is redundant. Similarly, Figure 5 and 6 better to be merged into one figure. Combine Figure 9, 10 and 11 into one figure. Combine Figure 13 and 14 into one figure. In figure 13 and 14 the font size of the legend and x and y axis title need to be increased for clear visibility. In figure 13 and 14 the x-axis title (Number of samples/10 s) is not clear. It needs to be elaborated in the text, while describing the figure. The performance of TEG also depends on the leg hight. Authors better discuss the optimum leg hight for the best thermoelectric performance. Thermoelectric performance of PEDOT:PSS is not stable in open atmosphere. Humidity affects a lot on its thermoelectric performance. Authors better study the performance of TEG over time in open atmosphere. Literature survey is not complete. There are other interesting studies for the development of flexible inorganic films.

ACS Appl. Mater. Interfaces 9, 25308, (2017).

2D Mater. 6 (2019) 045019

Energy Environ. Sci. DOI: 10.1039/c9ee01777a

Nature Communications 8, 16076 (2017)

Adv. Mater. 2017, 29, 1606662

Adv. Funct. Mater. (2019), 1905796

 

Authors better discuss these lines of research in the introduction part. It will also be good to cite some recent review papers on flexible thermoelectrics.

Author Response

Please see the attachment.

Author Response File: Author Response.docx

Reviewer 2 Report

Recommendation: Reconsider after minor revisions noted.

This is an interesting work, and also I believe the authors spent a long time fabrication this flexible device. Even it still have many test problems, such as the test errors, stability of the samples, and so on. I recommend publication of this work after they address properly my comments as below.

There are some grammatical errors in the text, please correct them carefully.

There are many figures that can be merged, for example, I strongly suggest to combine Figure 3 to 5, Figures 13 and 14.

Please provide a high quality SEM image of Figure 7, because it is so blurry, and the contrast is bad which cannot be published using this one.

In page 5, line 116, please define these parameters of this equation, and give more details about the conductivity measurement and calculation.

Please correct the caption of Figure 6.

Author Response

Please see the attachment.

Author Response File: Author Response.docx