| 微晶石墨作为阳极材料对二次锂离子电池电化学性能的影响 |
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| 引用本文： | 董建,周伟,刘旋,康飞宇,沈万慈.微晶石墨作为阳极材料对二次锂离子电池电化学性能的影响[J].炭素技术,1999(Z1). |
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| 作者姓名： | 董建 周伟 刘旋 康飞宇 沈万慈 |
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| 作者单位： | 北京清华大学材料系石墨组!北京，100084，北京清华大学材料系石墨组!北京，100084，北京清华大学材料系石墨组!北京，100084，北京清华大学材料系石墨组!北京，100084，北京清华大学材料系石墨组!北京，100084 |
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| 摘 要： | 利用Li－C实验电池，得到了微晶石墨（无定形石墨）作阳极材料时，其成分、粒度对锂离子电池电化学性能的影响。结果表明，微晶石墨在0．7V左右的不可逆容量与石墨颗粒的粒度和纯度无关；随着杂质含量的减少，可逆容量略有增加，但不可逆插入容量明显减少；杂质的成分与含量对微晶石墨的循环性能的影响不大；其可逆容量与不可逆插入容量都随着石墨粒度减小而增大；颗粒大小对其循环性能的影响不大。
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| 关 键 词： | 无定形石墨 阳极 二次锂离子电池 不可逆容量 |
THE EFFECT OF CRYSTALLINE GRAPHITE AS ANODE MATERIALS ON THE ELECTROCHEMICAL PROPERTIES OF SECONDARY LITHIUM ION BATTERY |
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| DONG Jian, ZHOU Wei, LIU Xuan, KANG Fei-yu, SHEN Wan-ci.THE EFFECT OF CRYSTALLINE GRAPHITE AS ANODE MATERIALS ON THE ELECTROCHEMICAL PROPERTIES OF SECONDARY LITHIUM ION BATTERY[J].Carbon Techniques,1999(Z1). |
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| Authors: | DONG Jian ZHOU Wei LIU Xuan KANG Fei-yu SHEN Wan-ci |
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| Abstract: | The effects of content and grain size of crystalline graphite (so - called amorphous graphite) as anode on theelectrochemical properties of secondary lithium ion battery were investigaed with experimential Li - C battery. The re-sults show that the irreversible capacity at 0. 7 V is not related to the size and content of graphite particles. With the de-crease of impurity content, the reversible capacity of graphite increases genily, but the irreversible capacity decreased great-ly. The effect of ingredient and content of impurity on the reversibility is litile, so is the size of graphite grain. The re-versible and irreversible capacity increases with the decreasnd size of graphite grain. |
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| Keywords: | Amorphous graphite anode secondary lithium ion battery irreversible capacity |
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