2016
DOI: 10.1016/j.matlet.2016.07.096
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Insight into Mg-doping effects on Na3Ni2SbO6 cathode host for Na-ion batteries

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Cited by 14 publications
(9 citation statements)
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“…However, the P′3 phase remained almost intact for Na y Ni 1.5 Mn 0.5 SbO 6 , which should be attributable to the irreversible capacity observed in Figure . This observation is in good agreement with previously reported Mg‐doped Na 3 Ni 2 SbO 6 , where a smooth phase transition between the initial O′3 and desodiated P′3 phases resulted in improved rate performance . On the other hand, the broadened reflections observed in this study might be attributable to a number of stacking‐fault phases which have been reported before in similar materials .…”
Section: Resultssupporting
confidence: 93%
See 1 more Smart Citation
“…However, the P′3 phase remained almost intact for Na y Ni 1.5 Mn 0.5 SbO 6 , which should be attributable to the irreversible capacity observed in Figure . This observation is in good agreement with previously reported Mg‐doped Na 3 Ni 2 SbO 6 , where a smooth phase transition between the initial O′3 and desodiated P′3 phases resulted in improved rate performance . On the other hand, the broadened reflections observed in this study might be attributable to a number of stacking‐fault phases which have been reported before in similar materials .…”
Section: Resultssupporting
confidence: 93%
“…Meanwhile, the subsequent unit cell volume change for P′3‐Na y Ni 1.75 Mn 0.25 SbO 6 was calculated to be +1.7 %. In addition, it is widely known that phases with smaller unit cell volume changes upon sodium extraction show greater electrochemical performance at high current rates than those with considerable changes in unit cell volume . This further explains the greater rate capability of the lightly doped sample compared to the other two samples examined in this study.…”
Section: Resultsmentioning
confidence: 68%
“…Sodium layered materials of the formula NaMO 2 are an alternative option for rechargeable Na-ion battery cathodes, but they are plagued by strong Na-ion ordering and ordered–ordered phase transitions brought about by the gliding of the MO 2 layers following sodium removal, which often results in a large volume change of the material upon cycling and an electrochemical “Devil’s Staircase”. Valiant efforts have been made to prevent these structural transitions during cycling, but to date, no compound performs this task successfully. Some layered Na-ion cathodes have high-valence cations in their transition-metal layers such as antimony (Sb 5+ ) or tellurium (Te 6+ ) that require a significant amount of divalent cations for charge compensation; for example, O′3-layered Na 3 Ni 2 SbO 6 , P2-layered Na 2 Ni 2 TeO 6 , and O′3-layered Na 4 NiTeO 6 . Each of these materials present a honeycomb ordered structure, which can be described with the classical formula for layered oxides: Na x (Ni,Na) 2/3 (Sb,Te) 1/3 O 2 . The honeycomb ordering results from coulombic interactions between each Sb 5+ or Te 6+ ion and the neighboring Ni 2+ and Na 1+ ions; size difference between cations can also result in this type of ordering.…”
Section: Introductionmentioning
confidence: 99%
“…Of this vast field, we only shall discuss here honeycomb-ordered A 3 M 2 SbO 6 antimonates where A and M are a univalent metal and a divalent transition metal (Co, Ni, Cu), respectively. First studied structurally, [1][2][3][4] this family later attracted attention as possible electrode materials for Li-ion [5][6][7] or Na-ion [8][9][10][11][12][13][14][15][16] batteries (with M=Ni [5][6][7][8][9][10][11][12][13][14][15] and Cu 16 ) and as a playground for non-trivial physical phenomena, with M=Cu, [17][18][19][20][21][22][23][24][25][26] Ni, [26][27][28][29][30][31] and Co. [30][31][32][33] The honeycomb lattice can be split into two identical sub-lattices. In contrast to the triangular...…”
Section: Introductionmentioning
confidence: 99%