将竹碳进行球磨和硫酸处理，比较颗粒粒径和硫酸处理时间对竹碳电极电化学性能的影响. 结果表明，5 μm平均粒径的竹碳电极具有较好的充放电效率，而硫酸处理可有效提高材料的放电容量，18 h硫酸处理的竹碳电极首次放电比容量可达328.2 mAh?g-1，50次循环后其比容量仍保持302.3 mAh?g-1，显示出优异的循环寿命.

The bamboo charcoal had been milled and treated by sulfuric acid. The influences of as-prepared material particle size and sulfuric acid treatment on the electrochemical performance had been studied. The result displays that the bamboo charcoal with mean particle size about 5 μm has the best first coulombic efficiency. Sulfuric acid treatment could raise the discharge capacity of bamboo charcoal, and the first discharge capacity of 328.2 mAh.g^-1 was obtained with the bamboo charcoal treated by sulfuric acid for 18 h. Furthermore, the capacity of 302.3 mAh.g^-1 could be maintained for 50 cycles, showing good cycle performance.