Sodium-rich manganese oxide porous microcubes with polypyrrole coating as a superior cathode for sodium ion full batteries.
Journal of Colloid and Interface Science(2020)
摘要
Polypyrrole-coated high Na content Na0.91MnO2 porous microcubes are prepared through high temperature calcination followed by a chemical ice water bath process. The higher sodium content of Na0.91MnO2 makes capacity increase up to 50 mAh g−1 compared with Na0.7MnO2.05. The thus wider interlayer space makes ion/electron insertion/extraction faster. Porous structure providing shorter ion/electron diffusion distance compared with hollow sphere structure. The conductive polymer modified sodium manganate oxide cathode for sodium ion full batteries exhibits ultrahigh initial capacity, cycling stability and rate capability.
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关键词
Sodium ion battery,Sodium manganate oxide,Porous microcube,Polypyrrole,Electrochemical performance
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