...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Carbon: An International Journal Sponsored by the American Carbon Society >Overcoming the quality-quantity tradeoff in dispersion and printing of carbon nanotubes by a repetitive dispersion-extraction process
【24h】

Overcoming the quality-quantity tradeoff in dispersion and printing of carbon nanotubes by a repetitive dispersion-extraction process

机译：通过重复的分散萃取工艺克服碳纳米管分散和印刷中的质量-质量折衷

获取原文
获取原文并翻译 | 示例
   

获取外文期刊封面封底 >>

       
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Dispersion-printing processes are essential for the fabrication of various devices using carbon nanotubes (CNTs). Insufficient dispersion results in CNT aggregates, while excessive dispersion results in the shortening of individual CNTs. To overcome this tradeoff, we propose here a repetitive dispersion-extraction process for CNTs. Long-duration ultrasonication (for 100 min) produced an aqueous dispersion of CNTs with sodium dodecylbenzene sulfonate with a high yield of 64%, but with short CNT lengths (a few mu m), and poor conductivity in the printed films (similar to 450 S cm(-1)). Short-duration ultrasonication (for 3 min) yielded a CNT dispersion with a very small yield of 2.4%, but with long CNTs (up to 20-40 mu m), and improved conductivity in the printed films (2200 S cm(-1)). The remaining sediment was used for the next cycle after the addition of the surfactant solution. 90% of the CNT aggregates were converted into conductive CNT films within 13 cycles (i.e., within 39 min), demonstrating the improved conductivity and reduced energy/time requirements for ultrasonication. CNT lines with conductivities of 1400-2300 S cm(-1) without doping and sub-100 mu m width, and uniform CNT films with 80% optical transmittance and 50 Omega/sq sheet resistance with nitric acid doping were obtained on polyethylene terephthalate films. (C) 2015 Elsevier Ltd. All rights reserved.
机译：分散印刷工艺对于使用碳纳米管（CNT）的各种设备的制造至关重要。分散不足会导致CNT聚集，而分散过多会导致单个CNT的缩短。为了克服这种折衷，我们在这里提出了一种重复的碳纳米管分散分散工艺。长时间超声处理（持续100分钟）会产生十二烷基苯磺酸钠与CNT的水分散体，产率高达64％，但CNT长度短（几微米），并且印刷薄膜的导电性差（类似于450 S cm（-1））。短时超声处理（持续3分钟）可得到CNT分散体，其收率极低，仅为2.4％，但具有长CNT（高达20-40μm），并改善了印刷薄膜的导电性（2200 S cm（-1） ））。加入表面活性剂溶液后，将剩余的沉淀物用于下一循环。 90％的CNT聚集体在13个循环内（即39分钟内）转变为导电CNT膜，这表明电导率得到了改善，超声所需的能量/时间也有所减少。在聚对苯二甲酸乙二醇酯薄膜上获得电导率为1400-2300 S cm（-1）且未掺杂且宽度小于100μm的CNT线，以及带有硝酸掺杂的均匀的CNT膜，该膜具有80％的透光率和50 Omega / sq的薄层电阻以及硝酸掺杂。 （C）2015 Elsevier Ltd.保留所有权利。

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