碳纳米管
材料科学
循环伏安法
锂(药物)
聚合
电化学
咔唑
表面改性
电解质
化学工程
电极
乙腈
纳米管
纳米技术
有机化学
聚合物
复合材料
化学
物理化学
医学
内分泌学
工程类
作者
M. Baibarac,Mónica Lira‐Cantú,Judith Oró‐Solé,N. Casañ‐Pastor,Pedro Gómez‐Romero
出处
期刊:Small
[Wiley]
日期:2006-07-28
卷期号:2 (8-9): 1075-1082
被引量:47
标识
DOI:10.1002/smll.200600148
摘要
Abstract Electrochemical polymerization of N‐vinyl carbazole (VC) on carbon nanotube (CNT) films was studied by cyclic voltammetry (CV) in LiClO 4 /acetonitrile solutions. Comparing the cyclic voltammograms recorded on a blank Pt electrode with those obtained when single‐ or multi‐walled carbon nanotube (SWNT or MWNT) films were previously deposited onto the Pt electrode, a downshift of the VC reduction peak potential is observed in the latter case. The influences of monomer concentration, type of solvent, and supporting electrolyte on the polymerization conditions and electrochemical properties of these composite materials are also investigated. The morphological aspects of poly(N‐vinyl carbazole) (PVC)‐functionalized CNTs are revealed by transmission electron microscopy (TEM) studies. A covalent functionalization of carbon nanotubes with PVC is invoked as a result of attenuated total reflection infrared (ATR‐IR) spectroscopic studies. Using PVC‐functionalized CNTs as a positive electrode and an electrolytic solution containing LiPF 6 , the charge–discharge characteristics of the rechargeable lithium cells are determined. High specific discharge capacity (≈45 and 115 mA h g −1 ) is reported for PVC‐functionalized single‐ and multi‐walled carbon nanotubes, respectively.
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