06 October 2011

Jawap Penilai 3 - Jawab satu satu

Cuba jawab setiap soalan yang ditanya. Jangan cuba mengelak. Kita mengelak sebab soalan yang ditanya memang kena tepat ke sasaran!

Jika mengelak pastinya dapat komen kedua yang pastinya panas ... dan kemungkinan besar akan reject!
“... previously I asked about EIS results in Figure 4, however in this corrected manuscript previous Figure 4 is deleted and there is no explanation. The authors shouldn't avoid answering my questions. This is very import to justify other results.”

Tidak semua yang dicadangkan kita terima dan setuju. Jika yakin statement kita betul sila 'lawan balik' dengan rujukan dari jurnal terbaik.

Format untuk menjawap penilai ada banyak. Bergantunglah kepada keadaan soalan yang ditanya dan keselesaan kita bila menjawap. Paling popular ialah:

Menggunakan table
- masalah utama ialah page terlalu panjang kerana ayat2 memanjang ke bawah untuk memenuhi ruang.



2. Paling mudah
Jawap guna baris2. Jawap soalan demi soalan bermula dengan Reviewer #1, Reviewer #2, Reviewer #3 etc. Ini memudahkan kerja dengan memendekkan pages.


Reviewer #1:
1. Figure 5. COMMENT: The discharge curves are very noisy, especially at higher concentration? What is the reason for this? I think previous investigation showed much smoother discharge curves. Please explain.
ANOTHER COMMENT: Figure 4 shows that all zinc dissapears when 0.6 M KOH was added. But Fig. 5 shows that there is still a lot of zinc (at least 50%), otherwise there should be no capacity. Please explain!
Response: We regret that we had overlooked this discharge behavior. It may be remarked here that the discharge curve is quite noisy, in contrast to our earlier study on Zn plates [1], which showed a much smoother curve. The present sample was a porous Zn powder. The inter-granular diffusion reaction of the electrolyte is expected to fluctuate and show a small variation because of the inhomogeneous granularity.

Meanwhile, in the paper by Othman [2], the contact was only between the surfaces of the electrode-agar layer during drying hours. They used thin KOH-treated agar as a surface layer to improve the contact between the electrode/electrolyte. Then, the curve showed a smoother curve as compared to our results. Since our agar + KOH binder was in direct contact with all of the Zn particles (not only the Zn at the surface layer), the formation of a surface oxide layer contributed to these noisy curves.

When 0.6 M KOH is added, the XRD (Fig. 4) shows that almost all of the Zn disappeared. However, the same mixture still seems to have some Zn and still showed significant capacity, see Fig. 5. This apparently is a self-contradictory finding. A possible reason for this result is the manner in which the XRD was recorded. The top surface of the dissolving Zn is converted into ZnO, which is why Fig. 4 shows ZnO-related peaks. The minor surface may still be Zn (not proved effectively by XRD, to make sure this measurement was repeated many times) in a wide-angle geometry.

We added new SEM results that were done to support the XRD observation (Fig. 4). The cross-section of the Zn particle showed some remaining pure Zn for 0.6 M KOH binder. Such remaining Zn can still provide capacity once its contacting alkali etches or makes holes in the top ZnO layer that encapsulates its grain.     

The explanations have been added in the revised manuscript and are colored in red on Page 7, Para 3 and Page 8, Para 1.

[1] A.A. Mohamad, Journal of Power Sources 159 (2006) 752-757.
[2] R. Othman, A.H. Yahaya, A.K. Arof, J. Appl. Electrochem. 32 (2002) 1347-1353.

Reviewer #2:
1. p. 4, last paragraph: »The increase of conductivity contributed to the increase of the charge carrier movement.« COMMENT: This is uclear, please rephrase (what is meant by movement? I think this effect is not related to mobility but to the concentration of free carriers)
Response: Yes, we agree with the reviewer. The explanation should focus on the concentration of free carriers. The increase in the conductivity contributed to the increase in the charge of the free carriers. The modifications have been added to the revised manuscript and are highlighted in red on Page 5, Para 1.

Setelah jawap buat format jawap soalan, jangan lupa edit pada manuscript utama. Gunakan color merah pada correction i.e. Font dan Figure yang dibuat.

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