Abstract
Copper is probably one of the most important metal used in the broad range of electronic applications. It has been developed for many decades, and so it is very hard to make any further advances in its electrical and thermal performance by simply changing the manufacture to even more oxygen-free conditions. Carbon nanotubes (CNTs) due to their excellent electrical, thermal and mechanical properties seem like an ideal component to produce Cu-CNT composites of superior electrochemical performance. In this report we present whether Cu-CNT contact has a beneficial influence for manufacturing of a new type of carbon-based supercapacitor with embedded copper particles. The prepared electrode material was examined in symmetric cell configuration. The specific capacity and cyclability of composite were compared to parent CNT and oxidized CNT.
Highlights
Carbon nanotubes (CNTs) are quasi-1D nano materials that have attracted significant attention because of remarkable properties such as high chemical stability, high electrical conductivity, strength, flexibility and impressive surface area [1,2,3,4]
Copper at the nanoscale is crucial. This is commonly handled by manufacture of CNT—copper composites by wet preparation methods, which are composed of multi component single-step or two step sensitization—activation processes in tin chloride, palladium chloride, copper salt, sodium formate, formaldehyde, ethylenediaminetetraacetic acid (EDTA) and polyethyleneglycole-containing bath [25,26]
Microstructure of neat CNTs and oxidized form (CNTOX) were analyzed using SEM to find changes in structure produced during acid treatment
Summary
Carbon nanotubes (CNTs) are quasi-1D nano materials that have attracted significant attention because of remarkable properties such as high chemical stability, high electrical conductivity, strength, flexibility and impressive surface area [1,2,3,4]. To achieve low-resistance ohmic contacts, and create a Cu-CNT composite of appreciable properties, improvement in connection between CNT and copper at the nanoscale is crucial This is commonly handled by manufacture of CNT—copper composites by wet preparation methods, which are composed of multi component single-step or two step sensitization—activation processes in tin chloride, palladium chloride, copper salt, sodium formate, formaldehyde, ethylenediaminetetraacetic acid (EDTA) and polyethyleneglycole-containing bath [25,26]. We report facile preparation of Cu-CNT composites by CNTs acid functionalization and fast copper salt reduction To confirm that this material may have appreciable electrical properties, we evaluated its potential for the application in supercapacitors. The product was configured in two-electrode assembly to probe its electrochemical performance
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