• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Applied Polymer Science >Si/CNTs@melamine-formaldehyde resin-based carbon composites and its improved energy storage performances
【24h】

Si/CNTs@melamine-formaldehyde resin-based carbon composites and its improved energy storage performances

机译：Si / CNTs @三聚氰胺 - 甲醛树脂基碳复合材料及其改进的能量存储性能

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In this paper, Si/carbon nanotubes@melamine-formaldehyde resin (MFR)-based carbon (Si/CNTs@C) composites have been fabricated by surface modification, electrostatic self-assembly, cross-linking of MFR under hydrothermal treatment and further carbonization. The microstructure of the Si/CNTs@C composites was characterized, and the effects of CNTs content in Si/CNTs@C composites on their electrochemical performances were also investigated in detail. The results indicate Si/CNTs@C composites as anode materials of Li-ion batteries exhibit better high-rate and cycling performances compared to Si and Si@MFR-based carbon composites. Notably, Si/CNTs@C composites with 10.4 wt% CNTs show specific capacities of 1900, 1879, 1,688, 1,394, 1,189 mAh center dot g(-1)at 0.2, 0.5, 1, 2, and 3 A center dot g(-1), respectively. Even at 4 and 5 A center dot g(-1), their capacities still reach 970 and 752 mAh center dot g(-1), respectively. Moreover, they deliver a reversible capacity of 1,184 mAh center dot g(-1)at 0.5 A center dot g(-1)after 100 cycles. Therefore, the reasonable structure is of great significance for enhancing the electrochemical performances of Si-based composites.
机译：本文研究了Si/c复合材料nanotubes@melamine-甲醛树脂基碳（Si）/CNTs@C)通过表面改性、静电自组装、MFR水热交联和进一步碳化制备了复合材料。硅的微观结构/CNTs@C对复合材料进行了表征，并研究了碳纳米管含量对复合材料性能的影响/CNTs@C研究了复合材料的电化学性能。结果表明，Si/CNTs@C复合材料作为锂离子电池的负极材料，与硅和硅相比，具有更好的高倍率和循环性能Si@MFR-碳基复合材料。值得注意的是，Si/CNTs@C含10.4 wt%碳纳米管的复合材料在0.2,0.5,1,2和3 A中心点g（-1）时的比容量分别为1900,1879,1688,1394,1189 mAh中心点g（-1）。即使在中心点g（-1）为4和5 A时，它们的容量仍然分别达到970和752毫安时的中心点g（-1）。此外，在100次循环后，它们在0.5 a中心点g（-1）下提供1184 mAh中心点g（-1）的可逆容量。因此，合理的结构对提高硅基复合材料的电化学性能具有重要意义。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号