| 不同碳源合成Li2MnSiO4／C正极材料的电化学性能 |
| |
| 引用本文： | 徐守冬,庄全超,朱亚波.不同碳源合成Li2MnSiO4／C正极材料的电化学性能[J].合成材料老化与应用,2013,42(2):21-27,46. |
| |
| 作者姓名： | 徐守冬 庄全超 朱亚波 |
| |
| 作者单位： | 1. 中国矿业大学材料科学与工程学院锂离子电池实验室,江苏徐州221116;中国矿业大学化学工程学院,江苏徐州221116
2. 中国矿业大学材料科学与工程学院锂离子电池实验室,江苏徐州,221116 |
| |
| 基金项目： | 中央高校科研业务费专项资金资助 |
| |
| 摘 要： | 采用溶胶一凝胶法合成Li2MnSiO4并以葡萄糖、己二酸和蔗糖为碳源合成Li2MnSiO4／C材料，对其进行XRD物相分析和SEM形貌分析。对合成出的Li2MnSiO4及Li2MnSiO4／C电极进行了充放电和电化学阻抗谱（EIS）测试。充放电结果表明碳包覆可以提高Li2MnSiO4放电容量，EIS结果说明，Li2MnSiO4／C能够减少电荷传递电阻，增加锂离子在颗粒内部的扩散速率，从而提高材料的电化学性能。
|
| 关 键 词： | 锂离子电池 Li2MnSiO4 碳包覆 碳源 |
Preparation and Electrochemical Properties of Li2MnSiO4/C Used Different Carbon Source |
| |
| XU Shou-dong
,
ZHUANG Quan-chao
,
ZHU Ya-bo.Preparation and Electrochemical Properties of Li2MnSiO4/C Used Different Carbon Source[J].Synthetic Materials Aging and Application,2013,42(2):21-27,46. |
| |
| Authors: | XU Shou-dong ZHUANG Quan-chao ZHU Ya-bo |
| |
| Affiliation: | 1,2(1 Li-ion Batteries Laboratory,School of Materials Science and Engineering China University of Mining and Technology,Xuzhou 221116,P.R.China;2 School of Chemical Engineering and Technology,Jiansu) |
| |
| Abstract: | Li2MnSiO4 and Li2MnSiO4/C, which was used glucose; adipic acid and sugar as carbon sources, were synthesized by sol-gel method. The crystalline structure, morphology were determined by X -ray diffraction （XRD） and scanning electron microscopy （SEM）. The electrochemical performances of Li2MnSiO4 and Li2MnSiO4/C were investigated by charge-discharge tests and electrochemical impedance spectroscopy （EIS）. Charge-discharge data reveal that, carbon coating can increase the discharge capacity of Li2MnSiO4. EIS results demonstrate that Li2MnSiO4/C decrease the charge-transfer resistance, and improve the velocity of lithium ion diffusions in the bulk of the electrode, thus the addition of C could improve the electrochemical performance of Li2MnSiO4. |
| |
| Keywords: | lithium ion battery li2MnSiO4 carbon coating carbon soure |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
