Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5439004 | Ceramics International | 2017 | 6 Pages |
Abstract
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 2.1 V vs. Na+/Na and a high initial discharge capacity of 7709.4 mA h gâ1, based on the active material mass, at a current density of 0.1 mA cmâ2. By a limit on the depth of discharge, the cell exhibited a specific capacity of 1000 mA h gâ1 with a high cycling stability up to 130 cycles. The considerable electrocatalytic activity suggests that the as-proposed MnCo2O4 is a highly efficient catalyst as air electrode for rechargeable sodium-air batteries.
Related Topics
Physical Sciences and Engineering
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Authors
Mengshi Shang, Yu Liu, Ji Xia, Shuming Zhang, Jianhua Yang,