• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>RSC Advances >Layer-by-layer assembled (high-energy carbon nanotube/conductive carbon nanotube)n nanocomposites for high volumetric capacitance supercapacitor electrodes
【24h】

Layer-by-layer assembled (high-energy carbon nanotube/conductive carbon nanotube)n nanocomposites for high volumetric capacitance supercapacitor electrodes

机译：逐层组装（高能碳纳米管/导电碳纳米管）N纳米复合材料，用于高容量电容超级电容器电极

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

摘要

We introduce high-performance ultrathin electrochemical electrodes based on multi-stacking of high-energy multiwall carbon nanotube (MWCNT) hybrids and conductive MWCNTs. The MWCNT hybrids coated with oleic acid-stabilized pseudocapacitive nanoparticles ( i.e. , OA-PC–MWCNTs) were assembled via a sequential covalent-bonded layer-by-layer (LbL) approach with amine-functionalized MWCNTs (NH _(2) –MWCNT) in organic media, generating a highly porous structure and allowing for precise nanoscale control of the electrode thickness. The resultant NH _(2) –MWCNT/OA-PC–MWCNT multilayer electrodes exhibited a high energy capacity and remarkable operational stability, considerably higher than the capacity and stability of conventional blended nanocomposite or electrostatic LbL-assembled electrodes. The volumetric capacitances of the (NH _(2) –MWCNT/OA–Fe _(3) O _(4) –MWCNT) _(20) and (NH _(2) –MWCNT/OA–MnO–MWCNT) _(20) were approximately 394 ± 10, and 674 ± 13 F cm ~(?3) at 1 A cm ~(?3) , respectively. Additionally, these electrodes maintained their high volumetric capacitances without loss of initial capacitance even after 10?000 cycles; this cycling stability stemmed from the formation of chemically stable covalent bonds between the MWCNT hybrids and NH _(2) –MWCNTs and between the PC NPs and NH _(2) –MWCNTs. Given that a variety of PC NPs can be used to prepare MWCNT hybrids and that this approach can be further expanded to nanocomposite films including LbL-assembled multilayers, our approach may provide a promising platform for designing electrodes for use as thin film-type energy storage devices.
机译：基于高能多壁碳纳米管（MWCNT）杂种和导电MWCNT的多堆叠，我们引入高性能超薄电化学电极。涂有油酸稳定的假壳纳米颗粒（即，OA-PC-MWCNT）的MWCNT杂交物通过胺官能化MWCNT（NH _（2）-MWCNT的顺序共价键合的逐层（LBL）方法组装。 ）在有机介质中，产生高度多孔结构并允许精确的纳米级控制电极厚度。得到的NH _（2）-MWCNT / OA-PC-MWCNT多层电极表现出高能量容量和显着的操作稳定性，显着高于传统混合纳米复合材料或静电LBL组装电极的容量和稳定性。 （nh _（2）-mwcnt / oa-fe _（3）O _（4）-mwnt）_（20）和（nh _（2）-mwwnt / oa-mno-mwcnt）_（nh _（2）和mwcnt）的容积电容（20）分别为约394±10，分别为1 a cm〜（α3）的674±13 f cm〜（α3）。另外，即使在10 000次循环之后，这些电极也使其高容量电容而不会损失初始电容;该循环稳定性源于MWCNT杂交种和NH _（2）-MWNT之间的化学稳定的共价键，在PC NP和NH _（2）-MWNT之间。考虑到各种PC NPS可用于制备MWCNT混合动力车，并且这种方法可以进一步扩展到包括LBL组装的多层的纳米复合膜，我们的方法可以为设计电极提供有希望的电极，以便用作薄膜型能量存储器的有希望的平台设备。

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