【摘要】 采用了一种工业副产品的纳米碳粉作为锂离子电池的负极材料,对纳米碳粉进行了提纯,测定了纳米碳粉的纯度,并对提纯后的纳米碳粉进行了电化学嵌锂性能的研究·充放电实验结果表明,该碳材料首次放电比容量为358 3mA·h/g,首次循环可逆容量为336 4mA·h/g,循环9次后可逆容量保持率为76 1%·TEM观察纳米碳粉的形貌,表明纳米碳粉为球形,直径在30nm左右;XRD测定纳米碳粉的结构,纳米碳粉的d002值介于石墨和软碳材料的d002值之间,为0 3481nm·更多还原

【Abstract】 An industrially by-product carbon nanopowder was reused as the raw material to make cathodes of lithium cell for the purpose of reducing cost and improving performance. After the purification of the carbon nanopowder, its purity was measured with an electrochemical investigation done for the lithium embedding behavior. The results of charge/discharge test showed that for the nanopowder the discharging specific capacity is 358.3mA·h/g, the first rechargeable capacity is 336.4mA·h/g and 76.1% of rechargeable capacity can be held on after the 9（th） recharging actions done. TEM result showed that the morphology of the nanopowder particles are spherical with a diameter about 30nm, and XRD result showed structurally that its interlayer distance, d₀₀₂, is 0.3481nm, i.e., between that of graphite and of soft carbon.更多还原