I am very intrigued by the data presented in the Supporting Info to corroborate the claims regarding the bulk reaction mechanism, since this data, not yet accessible, opposes several previous reports, not cited in the text:
- Works related to the bulk reaction of Sn with Na
http://www.sciencedirect.com/science/article/pii/S0925838814018428
http://jes.ecsdl.org/content/159/11/A1801.abstract
http://pubs.rsc.org/en/content/articlehtml/2014/ta/c4ta04356a
http://www.sciencedirect.com/science/article/pii/S0378775313001328
- Surface reaction of Sn and Sb anodes for Na-ion batteries
http://www.sciencedirect.com/science/article/pii/S0378775314014451
http://pubs.rsc.org/en/content/articlehtml/2013/ta/c3ta12040f
http://www.sciencedirect.com/science/article/pii/S0378775313001328
http://www.sciencedirect.com/science/article/pii/S1388248112005127
http://pubs.rsc.org/en/content/articlehtml/2013/ta/c3ta11568b
Article Understanding the Interaction of the Carbonates and Binder i...
Dear Loïc,
The sup Info will be available soon, we just received the proof today, so I guess in couple of days everything will be online. For the intermediate phases our results were not fitting with the literature that is why we are doing ab-initio approached to understand why. This article will be also available soon.
Best
Hi,
Having checked the now available supplementary, I can see that at the Na0.5Sn electrochemical composition, the XRD pattern matches beta-Sn (2 strongest lines) + an unknown phase, as observed before. In fact the phase has several more diffraction peaks, and we identified a minimum of 15 independent reflections for this phase, as visible in Fig. 6b and Fig. S10 in the ESI in the spectrum with the Sn and Cu signals subtracted:
http://www.sciencedirect.com/science/article/pii/S0378775313001328
I think another phase is simply phase for Na/Sn
Hi Loic,
DFT calculation are in progress in our laboratory and we will further investigate those points in our next paper :) Be patient, for some points we agree for some others we don't :). We also have collected high resolution XRD, neutron diffraction and XAS etc... Hope we will all finally find the Sn mystery story....
Best
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