A new electrode material for rechargeable sodium batteries: P2-type Na 2/3 [Mg 0.28 Mn 0.72 ]O 2 with anomalously high reversible capacity

A new electrode material for rechargeable sodium batteries: P2-type Na 2/3 [Mg 0.28 Mn 0.72 ]O 2 with anomalously high reversible capacity

P2-type Na 2/3 [Mg 0.28 Mn 0.72 ]O 2 is prepared and electrode performance in Na cells is first provided. The sample surprisingly delivers a large reversible capacity (220 mA h g −1 ) even though electrochemically inactive magnesium ions are enriched in the host structure. This new electrode materia...

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Veröffentlicht in:Journal of materials chemistry. A, Materials for energy and sustainability Materials for energy and sustainability, 2014-10, Vol.2 (40), p.16851-16855
Hauptverfasser: Yabuuchi, Naoaki, Hara, Ryo, Kubota, Kei, Paulsen, Jens, Kumakura, Shinichi, Komaba, Shinichi
Format: Artikel
Sprache:eng
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Zusammenfassung:P2-type Na 2/3 [Mg 0.28 Mn 0.72 ]O 2 is prepared and electrode performance in Na cells is first provided. The sample surprisingly delivers a large reversible capacity (220 mA h g −1 ) even though electrochemically inactive magnesium ions are enriched in the host structure. This new electrode material is potentially utilized for rechargeable batteries made from only earth-abundant elements.
ISSN:2050-7488
2050-7496
DOI:10.1039/C4TA04351K