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| 隔膜表面改性法改进锂金属电极循环性能 | |
| 引用本文： | 鞠兰,李志虎,鞠华,徐艳辉.隔膜表面改性法改进锂金属电极循环性能[J].功能材料,2012,43(12):1640-1642. |
| 作者姓名： | 鞠兰 李志虎 鞠华 徐艳辉 |
| 作者单位： | 1. 浙江纺织服装职业技术学院,浙江宁波,315211 2. 苏州大学化学电源研究所,江苏苏州,215006 3. 苏州大学城市轨道交通学院,江苏苏州,215021 |
| 基金项目： | 江苏省自然科学基金资助项目(BK2009110);科技部科研院所专项基金资助项目(2009EG111014);宁波市自然科学基金资助项目(2010A610151) |
| 摘 要： | 采用等离子体接枝的方法在聚丙烯(PP)隔膜表面接枝锂磺酸根(SO3Li)基团以及甲基丙烯酸甲酯(MMA)基团.将隔膜与金属锂组装成对称电池采用恒流长时间放电、恒流充放电循环以及交流阻抗方法研究接枝的表面官能团对金属锂电极上锂沉积/溶解过程的影响.实验结果证实,表面接枝MMA和SO3Li官能团可有效促进锂的沉积/溶解动力学,降低界面电阻,抑制金属锂在反复溶解/沉积循环中枝晶的形成. |
| 关 键 词： | 锂金属电极 枝晶 等离子体 接枝 |
The surface modification of the separator to improve the cyclic performance of lithium metal electrode |
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| JU Lan , LI Zhi-hu , JU Hua , XU Yan-hui.The surface modification of the separator to improve the cyclic performance of lithium metal electrode[J].Journal of Functional Materials,2012,43(12):1640-1642. | |
| Authors: | JU Lan LI Zhi-hu JU Hua XU Yan-hui |
| Affiliation: | 1.Zhejiang Textile & Fashion College,Ningbo 315211,China; 2.Institute of Chemical Power Sources,Soochow University,Suzhou 215021,China; 3.School of Urban Rail Transportation,Soochow University,Suzhou 215021,China) |
| Abstract: | In this article the plasma technique was used to graft the lithium sulfonic group(SO3Li) and methyl methalacrylate(MMA) group into the polypropylene(PP) separator surface.The symmetric Li/separator/Li cells were assembled to study the effect of these functional groups on the lithium metal electrode.based on the electrochemical impedance measurements and the charge-discharge tests it can be found that the introduction of the MMA and SO3Li functional groups into the electrolyte(separator)/electrode interface can effectively enhance the electrode reaction kinetics,decrease the interface resistance and suppress the formation of the dendrite during cycling. |
| Keywords: | lithium metal electrode dendrite plasma grafting |
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