| 新型正极材料三硫代环磷氮烯无机聚合物的合成 | |
| Synthesis of a New Inorganic Polymer Cathode Cyclic Phosphazene Trisulfide | |
| 摘要: 采用缩合聚合方法合成了新型三硫代环磷氮烯无机聚合物[(NPS3)3]n，利用红外光谱测试与元素含量分析技术证明了[(NPS3)3]n的分子结构与组成，并对聚合物材料的粒度、比表面积及微观形貌进行了考察。TG/DTA 实验证明材料在200 ℃ 以下具有良好的热稳定性。循环伏安测试表明[(NPS3)3]n正极材料在锂电池体系具有2.15 V的电化学还原电位和2.45 V的电化学氧化电位，经充放电循环实验观察，材料的首次放电容量达到749.0 mAh·g-1，与理论容量(759.0 mAh·g-1)十分接近；经过50次充放电循环后，放电容量保持在674.8 mAh·g-1，具有很高的使用容量和优秀的循环性能。 | |
| 关键词: 无机聚合物 三硫代环磷氮烯 正极 锂电池 | |
| 基金项目: | |
| Abstract: A new inorganic polymer cyclic phosphazene trisulfide material was synthesized and characterized by IR, elemental analysis, particle size, specific-surface area measurement, SEM, TG experiment and cyclic volt-ampaere analysis techniques. The results show that the material has a good thermal stability under 200 ℃, a reduction current peak at 2.15 V and an oxidation current peak at 2.45 V when used as cathode material in lithium secondary battery. During repeated charge-discharge cycles, [(NPS3)3]n revealed a first discharge capacity of 749.0 mAh·g-1 that is very close to the theoretical one (759.0 mAh·g-1), it also retained the discharge capacity of 674.8 mAh·g-1 after 50 cycles. | |
| Keywords: inorganic polymer cyclic phosphazene trisulfide cathode lithium battery | |
| 投稿时间：2005-04-18 修订日期：2005-06-29 | |
| 摘要点击次数: 1575 | |
| 全文下载次数: 1789 | |
| 徐国祥,其鲁,闻雷,陈永翀,晨晖,慈云祥.新型正极材料三硫代环磷氮烯无机聚合物的合成[J].无机化学学报,2005,21(11):1609-1613. | |
| 查看全文 查看/发表评论 下载PDF阅读器 | |
| Support information: | |
|
| |
|
| |
|
| |