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Volume 8
Issue 2
10.3390/c8020032
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Article
Peer-Review Record

Development of Disposable and Flexible Supercapacitor Based on Carbonaceous and Ecofriendly Materials

C 2022, 8(2), 32; https://doi.org/10.3390/c8020032
by Giovanni G. Daniele 1, Daniel C. de Souza 1, Paulo Roberto de Oliveira 1, Luiz O. Orzari 1,2, Rodrigo V. Blasques 1,2, Rafael L. Germscheidt 3, Emilly C. da Silva 4, Leandro A. Pocrifka 4, Juliano A. Bonacin 3 and Bruno C. Janegitz 1,*
Reviewer 1: Anonymous
Reviewer 2:
Hiroyuki Muramatsu
C 2022, 8(2), 32; https://doi.org/10.3390/c8020032
Submission received: 21 April 2022 / Revised: 18 May 2022 / Accepted: 24 May 2022 / Published: 7 June 2022
(This article belongs to the Special Issue Carbon and Related Composites for Sensors and Energy Storage: Synthesis, Properties, and Application)

Round 1

Reviewer 1 Report

The authors reported a novel flexible supercapacitor device from a polyethylene terephthalate substrate, reused from beverage bottles, and a conductive ink based on carbon black (CB) and cellulose acetate (CA). As a result, the highest capacitance value for the device with the 66.7/33.3 wt% CB/ CA in a basic H2SO4 solution could reach 135.64 F g−1, and the values of 2.45 Wh Kg−1 for specific energy and around 1000 W Kg−1 for specific power. Overall, the work is of some novelty. But before its further consideration, some issues need to be verified.

  1. In the introduction, some typical supercapacitors based on carbon materials should be cited: Advanced Functional Materials 2015, 25 (47), 7381-7391. Journal of Materials Chemistry A 2018, 6 (41), 20254-20266; Advanced Energy Materials 2019, 9 (47), 1902915. Energy Storage Materials 2018, 13, 96-102
  2. The carbon black (CB) and cellulose acetate (CA) should be characterized by XRD and SEM.
  3. In Fig. 2c, some peaks occur at the CV curve, please explain.
  4. The rate capacity should be measured at different current densities.

Author Response

Please see the attachment.

Author Response File: Author Response.pdf

Reviewer 2 Report

This paper reports flexible supercapacitor devices using carbon black with cellulose acetate on terephthalate substrates. This paper reveals good capacitance performances using a simple and eco-friendly strategy process. My comments are listed below.

1)The electrochemical performance strongly depends on the structural properties of the used CB. Therefore, I recommend showing the electrochemical performance using different CB to reveal CB(VULCAN) with CA used in this study is an essential finding or not.

2)There is no detailed experimental information on the analysis of flexibility relating to their electrochemical performance.

Author Response

Please see the attachment.

Author Response File: Author Response.pdf

Round 2

Reviewer 2 Report

I consider the authors answered the reviewer's comments appropriately. Therefore, I recommend the publication in the present form.

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