期刊
ACS NANO
卷 5, 期 11, 页码 8552-8561出版社
AMER CHEMICAL SOC
DOI: 10.1021/nn2029617
关键词
polyaniline; carbon nanotubes; layer-by-layer assembly; nanostructured electrodes; lithium-ion batteries; electrochemical capacitors
类别
资金
- Contour Energy
- National Science Foundation [DMR 02-13282]
- Natural Sciences and Engineering Research Council (NSERC) of Canada
- Samsung Foundation of Culture
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [819762] Funding Source: National Science Foundation
Thin film electrodes of polyaniline (PANi) nanofibers and functionalized multiwall carbon nanotubes (MWNTs) are created by layer-by-layer (LbL) assembly for microbatteries or - electrochemical capacitors. Highly stable cationic PANi nanofibers, synthesized from the rapid aqueous phase polymerization of aniline, are assembled with carboxylic add functionalized MWNT Into LbL films. The pH-dependent surface charge of PANi nanofibers and MWNTs allows the system to behave like weak polyelectrolytes with controllable LbL film thickness and morphology by varying the number of bilayers. The LbL-PANi/MWNT films consist of a nanoscale interpenetrating network structure with well developed nanopores that yield excellent electrochemical performance for energy storage applications. These LbL-PANi/MWNT films in lithium cell can store high volumetric capacitance (similar to 238 +/- 32 F/cm(3)) and high volumetric capacity (similar to 210 mAh/cm(3)). In addition, rate-dependent galvanostatic tests show LbL-PANi/MWNT films can deliver both high power and high energy density (similar to 220 Wh/L-electrode at similar to 100 kW/L-electrode) and could be promising positive electrode materials for thin film microbatteries or electrochemical capacitors.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据