Single Crystalline Na 0.7 MnO 2  Nanoplates as Cathode Materials for Sodium‐Ion Batteries with Enhanced Performance | Zendy

Su Dawei | Zendy; Wang Chengyin | Zendy; Ahn Hyojun | Zendy; Wang Guoxiu | Zendy

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Single Crystalline Na 0.7 MnO 2 Nanoplates as Cathode Materials for Sodium‐Ion Batteries with Enhanced Performance

Author(s) -

Su Dawei,

Wang Chengyin,

Ahn Hyojun,

Wang Guoxiu

Publication year - 2013

Publication title -

chemistry – a european journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.687

H-Index - 242

eISSN - 1521-3765

pISSN - 0947-6539

DOI - 10.1002/chem.201301563

Subject(s) - materials science , cathode , high resolution transmission electron microscopy , ion , electrochemistry , sodium , hydrothermal circulation , extraction (chemistry) , single crystal , rhombus , chemical engineering , transmission electron microscopy , nanotechnology , crystallography , chemistry , electrode , metallurgy , geometry , mathematics , organic chemistry , chromatography , engineering

Single crystalline rhombus‐shaped Na 0.7 MnO 2 nanoplates have been synthesized by a hydrothermal method. TEM and HRTEM analyses revealed that the Na 0.7 MnO 2 single crystals predominantly exposed their (100) crystal plane, which is active for Na + ‐ion insertion and extraction. When applied as cathode materials for sodium‐ion batteries, Na 0.7 MnO 2 nanoplates exhibited a high reversible capacity of 163 mA h g −1 , a satisfactory cyclability, and a high rate performance. The enhanced electrochemical performance could be ascribed to the predominantly exposed active (100) facet, which could facilitate fast Na + ‐ion insertion/extraction during the discharge and charge process.

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