2015
DOI: 10.1149/2.0801508jes
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Roles of Processing, Structural Defects and Ionic Conductivity in the Electrochemical Performance of Na3MnCO3PO4Cathode Material

Abstract: Na 3 MnCO 3 PO 4 with a potential to deliver two-electron transfer reactions per formula via Mn 2+ /Mn 3+ and Mn 3+ /Mn 4+ redox reactions and a high theoretical capacity (191 mAh/g) can play an important role in Na-ion batteries. This study investigates the dependence of the electrochemical performance of Na 3 MnCO 3 PO 4 -based sodium-ion batteries on processing, structural defects and ionic conductivity. Na 3 MnCO 3 PO 4 has been synthesized via hydrothermal process under various conditions with and without… Show more

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Cited by 45 publications
(33 citation statements)
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“…By comparison with the structural defects discussed above, a clear and interesting trend emerges, that is, the bulk conductivity of NaCrO 2 decreases with increasing structural defects. This conclusion is in excellent agreement with our previous findings for Na 3 MnCO 3 PO 4 cathode materials . The BM‐before powder has the highest bulk conductivity and the BM‐after has the lowest conductivity because the BM‐before powder has the lowest structural defects and the BM‐after powder has the highest structural defects.…”
Section: Resultssupporting
confidence: 92%
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“…By comparison with the structural defects discussed above, a clear and interesting trend emerges, that is, the bulk conductivity of NaCrO 2 decreases with increasing structural defects. This conclusion is in excellent agreement with our previous findings for Na 3 MnCO 3 PO 4 cathode materials . The BM‐before powder has the highest bulk conductivity and the BM‐after has the lowest conductivity because the BM‐before powder has the lowest structural defects and the BM‐after powder has the highest structural defects.…”
Section: Resultssupporting
confidence: 92%
“…The bulk resistance of the powder compact, R, is used to calculate the bulk conductivity, σ, of NaCrO 2 using the following equation [Eq. ]:,, trueσ=LnormalRnormalA …”
Section: Resultsmentioning
confidence: 99%
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“…Follow-up experiments synthesized the material for the first time and confirmed its electrochemical activity within the expected voltage range [52,53,54]. The sodium version was investigated afterwards and showed appealing electrode properties as well [55,56,57,58]. …”
Section: Discovery and Design Of New Electrode Materialsmentioning
confidence: 79%