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In this work, the nanosized porous MnCo2O4 microspheres were synthesized by a hydrothermal method and their electrochemical behaviors were investigated based on a carbon supported composite air electrode for rechargeable sodium-air batteries. Under dry air test condition, the MnCo2O4/C air electrode demonstrated a stable working voltage of around 2.1V vs. Na+/Na and a high initial discharge capacity...
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