Nanostructured Carbons with High Specific Surface Area for Sodium-Ion Batteries
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초록
내용
Sodium-ion batteries (NIBs) haver been actively studied as a next generation energy storage device, while there are several issues to be solved. One of the critical obstacles is its relatively low energy density originating from the larger and heavier sodium ion. In this study, nanostructured carbons with high specific surface area were prepared from synthetic polymer precursors by controlled pyrolysis process, and their electrochemical performances as a cathode for NIBs were investigated. The nanostructured carbons can deliver a specific capacity of ~300 mA h g-1 at an average voltage of 2.8 V. In addition, stable cycling behaviors were maintained during 300 cycles.