Beyond Divalent Copper: A Redox Couple for Sodium Ion Battery Cathode Materials

Beyond Divalent Copper: A Redox Couple for Sodium Ion Battery Cathode Materials

A P2-layered oxide using copper as the active redox metal has been discovered. It has a composition of Na⅔Cu⅓Mn⅔O2, and can withstand a thousand cycles, maintaining 61% of its original capacity. We demonstrate that copper can enable not only high voltage, but also excellent stability. This work open...

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Veröffentlicht in:ECS electrochemistry letters 2015-03, Vol.4 (5), p.A41-A44
Hauptverfasser: Mason, Chad W., Lange, Felix, Saravanan, Kuppan, Lin, Feng, Nordlund, Dennis
Format: Artikel
Sprache:eng
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Zusammenfassung:A P2-layered oxide using copper as the active redox metal has been discovered. It has a composition of Na⅔Cu⅓Mn⅔O2, and can withstand a thousand cycles, maintaining 61% of its original capacity. We demonstrate that copper can enable not only high voltage, but also excellent stability. This work opens up a new avenue of oxide design for high energy, cost effective battery systems.
ISSN:2162-8726
2162-8734
DOI:10.1149/2.0041505eel