Table 2.
IS, QS, LW, % contribution and attribution of the signals appearing in the 119Sn Mössbauer spectra of commercial micro- and nano-Sn, mechanochemically produced Mg2Sn and discharged/recharged electrodes. * Recoilless fractions, f = 0.05 (Sn and d-MgδSn), 0.35 (SnO), 0.60 (SnO2), and 0.3 (c-Mg2Sn) [28,29]. Copyright Elsevier, 2000, 1966. These values were used to convert spectral contributions (%) into semiquantitative composition (%corr).
| Sample (Nominal) | IS/mms−1 | QS/mms−1 | LW/mms−1 | % | %corr * | Attribution |
|---|---|---|---|---|---|---|
| (a) nano-Sn | 2.5798 | - | 1.419 | 33 | 76 | β-Sn |
| 2.753 | 1.525 | 1.122 | 25 | 2 | SnO | |
| 0.0267 | 1.581 | 1.165 | 42 | 13 | SnO2 | |
| (b) nano-Mg1.3Sn | 1.871 | - | 0.884 | 40 | 50 | c-Mg2Sn |
| discharged | 2.856 | 0.906 | 1.01 | 27 | 29 | SnO |
| 0.052 | 0.533 | 0.836 | 33 | 21 | SnO2 | |
| (c) thermal-MgSn | 2.672 | - | 1.043 | 14 | 60 | d-MgδSn |
| discharged + charged | 1.903 | - | 1.044 | 9 | 7 | c-Mg2Sn |
| 2.812 | 1.223 | 1.041 | 23 | 14 | SnO | |
| 0.051 | 0.551 | 0.942 | 54 | 19 | SnO2 | |
| (d) micro-Mg0.4Sn | 2.708 | - | 0.874 | 15 | 60 | d-MgδSn |
| discharged + fully | 2.712 | 1.573 | 0.877 | 26 | 17 | SnO |
| charged | 0.051 | 0.542 | 0.963 | 61 | 23 | SnO2 |