Boron/carbon (B/C) materials with the graphite-like layered structure were previously prepared [1] and were applied to the anode of lithium (Li) ion batteries [2]. We prepared B/C materials and investigated electrochemical properties as the anode of sodium(Na) ion batteries [3] which are kinds of secondary batteries in the next generation. In this study we have prepared B/C materials at different temperatures by the CVD method using boron trichloride (BCI3) and ethylene (C2H4) as starting materials, and compared the electrochemical properties as the anode of sodium ion batteries.
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