基于树叶制备的多孔碳材料作为锂电池负极的应用试验

以树叶作为廉价易得的碳源,采用硼酸处理改善其电化学性能,并用氢氧化钾(KOH)进行活化提高材料比表面,以获得更多的储锂活性位。制备电池并对其进行测试。测试表明,活化材料作为锂电池的负极材料,具有较高的比容量,经过40次充放电循环后,仍然能够保持相当高的比容量,并且有着出色的大电流放电能力。因此,它作为锂离子电池的电极材料具有潜在的商业价值。

Application Research of Porous Carbon Materials Prepared From Leaves as Lithium Battery Cathode

Leaves were used as a cheap and easy-obtained carbon source. At first, they were treated by boric acid to improve its electrochemical behavior, and then they were activated by potassium hydroxide (KOH) to increase its specific surface area to obtain more lithium storing active sites. At last,coin cells were prepared with them, and the coin cells were tested. The results show that the activated carbon as a negative electrode material of lithium battery has high capacity, after 40 charge-discharge cycles, the specific capacity can still keep high level, and it also has excellent high rate discharge performance. So the carbon electrode will have a good commercial value as lithium-ion battery electrode material.