Respon for Reviewer Reviewer 1

No Comment Respon Page

1 The authors should use MnO

2

/MWCNT instead

MWCNT/MnO

2

. It should be applied in whole manuscript (main text, figures,..).

All texts have used MnO

2

/MWCNT -

2 The authors should add new electrochemical experiments. The authors should investigate the material as electrode for supercapacitors.

The electrochemical experiments have used Standard Electrochemical

impedance spectroscopy (EIS) and cyclic voltametry (CV) measurements using LCR meter HIOKI 3532-50 chemical impedance meter and WBCS3000S Wonatech. The measurements were carried out in a standard double cell containing 1 M KCl aqueous solution.

3 The authors should use and cite following paper:

Int J Electrochem Sci., 11(2016)4267 Edit English.

Journal Int J Electrochem Sci., 11 (2016) 4267 has been referred and used to compare the results of X-ray diffraction (XRD) analysis.

4

4 You have to put all information about used methods (CV,..),

materials and used parameters in the experimental section.

To fabricate supercapacitor electrodes, 0.2 g of ethylcellulose was dissolved in 4 mL ethanol and the solution stirred for 10 minutes, followed by mixing 1.6 g terpineol into the binder.

The MnO

2

/MWCNT was dispersed in the binder by stirring for 10 minutes.

Then MnO

2

/MWCNT paste was deposited onto the SS foil substrate by using the doctor blade method and drying at 150 °C for 2 hours.

Electrochemical impedance spectroscopy (EIS) and cyclic voltametry (CV) measurements performed using LCR meter HIOKI 3532-50 chemical impedance meter and WBCS3000S Wonatech,

3

respectively. The measurements were carried out in a standard double cell containing 1 M KCl aqueous solution.

5 Figure 6. Could you explain current variation in CV curves.

Figure 6 shows cyclic voltammograms of (a) MnO

2

/MWCNT 1:1 and (b) MnO

2

/MWCNT 3:1 electrode material at scan rates from 25 mV/s to 200 mV/s. The ion diffusion process at a low scan rate is lengthy. Ions and electrons coming from the current collector will diffuse evenly to the electrode surface to the pore meso depending on the homogeneity of MnO

2

/MWCNT. Increasing the homogeneity of MnO

2

/MWCNT through the hydrothermal process will support this diffusion process. An increase in the width of the charge current and discharge curve will occur, indicated by a large capacitance value.

On the other hand, at a high rate of induction, the ion diffuses rapidly but only just reaches the surface of the electrode, resulting in a small charge and discharge current curve which indicates a low capacitance value.

5-6

6 Could you make new table for comparison your supercapacitor to other similar, described in literature, supercapacitors?

The table for comparison my

supercapacitor to other similar can be seen in the below (*)

9

7 Figure 7. You used only 3 current densities, but there are 6 curves.

Why?

I have revised for figure 7. Previously one density had two curves

representing repetition of

measurements at each density, so that I have corrected it become one curve from the average of the two curves at each current density

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8 Figures 8 and 9 cannot be accepted in the form. Please, improve the

I have improved the curves on figure 8 and 9 by fitting and put experimental data.

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curves by fitting and put experimental data

9 Please, delete “of” from references in reference section and use correct abbreviation titles for cited journals

I have correct abbreviation titles for cited journals.

(*) Table 1. MnO

2

/MWCNT specific capacitance (Cs) of several methods

Samples Method Electrolite Specific Capacitance Ref.

(C

s

) F/g

MnO

2

/MWCNT 3:1 hydrothermal KCl 252 This study

CNT@NCT@MnO

2

3D chemical method Na

2

SO

4

210 [1]

CNT-MnO

2

nanoflaky chemical method Na

2

SO

4

145.6 [10]

MWCNT/MnO

2

sonochemical Na

2

SO

4

394 [16]

3D MnO

2

–CNT in-situ hydrothermal Na

2

SO

4

214 [26]

MnO

2

/rGO-CNT modified hummers KCl 295.83 [28]

MnO

2

@NCNTs@MnO

2

solvothermal Na

2

SO

4

253.1 [30]

Reviewer 2

No Comment Respon Page

1 We must check every manuscript with iThenticate similarity detection service. The authors can find the REPORT (two documents in single file – marked manuscript and report) in the attachment. The authors should improve/change/delete text (main text with all paragraphs, tables, figures) where there is high similarity with other papers and/or cite the papers in revised paper.

I have checked and tested the similarity of my script using Turnitin software and I have sent it by email

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2 The authors should use IJES format for used references. For example:

1. Y. Hong, Y.K. Kim, J.H. Chang, S.H. Kim, H. Choi, D.H. Nam, Y.Z.

Kim and J.H. Kwak, J. Med. Chem., 23 (1997) 3584. (for abbreviated journal title)

2. B.M.H. Al-hadiya, A.A. Khady and G.A.E. Mostafa, Talanta, 83 (2010) 110. (for full journal title or full last word in abbreviated journal title – J.

Power Sources, Electrochim. Acta, Corrosion, )

I have used IJES format for references:

1. Y. Wang, D. Zhang, Y. Lu, W.

Wang, T. Peng, Y. Zhang, Y. Guo, Y. Wang, K. Huo, J. K. Kim and Y.

Luo, Carbon, 143 (2019) 335.

2. Q. Yua, C. Wanga, X. Lia, Z. Lia, L.

Wanga, Q. Zhanga, G. Wua and Z.

Li, Fuel, 239 (2019) 1240.

3. J. Jia, R. Ran, X. Guo, X. Wu, W.

Chen and D. Weng, Catal. Commun., 119 (2019) 139.

4. Y. Wei, L. Ni, M. Li and J. Zhao, Catal Today, 297 (2017) 188.

5. Y. Zhang, F. Wang, P. Ou, H. Zhu, Y. Lai, Y. Zhao, W. Shi, Z. Chen, S.

Li and T. Wang, J. of Hazard. Mat., 360 (2018) 223.

……

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3 There are many mistakes regarding punctuation (comma, space, full stop,..). Please, check all text. Please, do not use et al., too.

I have corrected all the texts of the manuscript

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4 The authors have to edit English using professional service for the work. https://secure.aje.com or similar services. The authors should send the certificate.

I have done proof reading and I attach the certificate

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