Abstract
We report results on the Forcespinning (FS) of Polyvinylpyrrolidone (PVP) solutions for the preparation/fabrication of carbon fibers (CFs) as anodes for sodium ion batteries (SIBs). The objective of this study is to manipulate the microstructure of the CFs to improve the intercalation kinetics of the sodium ion into the CF structure. The as prepared CFs were porous with an average fiber diameter of 1.99 µm. The electrochemical performance of the CF anodes was investigated by carrying out galvanostatic charge/discharge and impedance experiments on Na+ half cells. The results show that the CF anodes exhibited a high discharge capacity of 330 mAh g−1 at the first discharge (Sodium insertion) and reversible capacity of 88 mAh g−1 after 100 cycles at a current density of 100 mA g−1. The results are promising and show that Forcespun CFs are a stepping stone for anode materials in SIBs.
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