• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Nanotechnology >Porous SnO2-CuxO nanocomposite thin film on carbon nanotubes as electrodes for high performance supercapacitors
【24h】

Porous SnO2-CuxO nanocomposite thin film on carbon nanotubes as electrodes for high performance supercapacitors

机译：碳纳米管上的多孔SnO2-碳纳米复合薄膜作为高性能超级电容器的电极

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

Metal oxides are promising materials for supercapacitors due to their high theoretical capacitance. However, their poor electrical conductivity is a major challenge. Hybridization with conductive nanostructured carbon-based materials such as carbon nanotubes (CNTs) has been proposed to improve the conductivity and increase the surface area. In this work, CNTs are used as a template for synthesizing porous thin films of SnO2-CuO-Cu2O (SnO2-CuxO) via an electroless deposition technique. Tin, with its high wettability and electrical conductivity, acts as an intermediate layer between copper and the CNTs and provides a strong interaction between them. We also observed that by controlling the interfacial characteristics of CNTs and varying the composition of the electroless bath, the SnO2-CuxO thin film morphology can be easily manipulated. Electrochemical characterizations show that CNT/SnO2-CuxO nanocomposite possesses pseudocapacitive behavior that reaches a specific capacitance of 662 F g(-1) and the retention is 94% after 5000 cycles, which outperforms any known copper and tin-based supercapacitors in the literature. This excellent performance is mainly attributed to high specific surface area, small particle size, the synergistic effect of Sn, and conductivity improvement by using CNTs. The combination of CNTs and metal oxides holds promise for supercapacitors with improved performance.
机译：由于其高理论电容，金属氧化物是超级电容器的有希望的材料。然而，他们的导电性差是一个重大挑战。已经提出了用导电纳米结构碳基材料的杂交，例如碳纳米管（CNT）以改善导电性并增加表面积。在这项工作中，CNT用作用于通过无电沉积技术合成SnO2-CuO-Cu2O（SnO2-杂环）多孔薄膜的模板。具有高润湿性和电导率的锡用作铜和CNT之间的中间层，并提供它们之间的强相互作用。我们还观察到，通过控制CNT的界面特性并改变无电镀浴的组成，可以容易地操纵SnO2-杂膜形态。电化学表征表明，CNT / SnO2-核心纳米复合材料具有达到662V（-1）的特定电容的假偶联行为，并且在5000次循环后保持率为94％，这优于文献中的任何已知的铜和锡基超级电容器。这种优异的性能主要归因于使用CNT的高比表面积，小粒径，Sn的协同效应和电导率改善。 CNT和金属氧化物的组合具有提高性能的超级电容器的承担。

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