Temperature-dependent charge transport mechanisms in carbon sphere/polyaniline composite
Source abstract
Abstract
Charge transport in the temperature range 80 K < T < 300 K was studied in a composite of carbon spheres (CS), prepared via hydrothermal carbonization of sucrose, and the conducting polymer polyaniline (PANi). PANi was synthesized via the oxidative polymerization of aniline with ammonium peroxydisulfate (APS) in acidic media. The CS/PANi composite was prepared by coating the spheres with a thin polyaniline (PANi) film doped with hydrochloric acid (HCl) in situ during the polymerization process. Temperature dependent conductivity measurements show that three dimensional variable range hopping of electrons between polymeric chains in PANi-filled gaps between CS is the predominant transport mechanism through CS/PANi composites. The high conductivity of the CS/PANi composite makes the material attractive for the fabrication of devices and sensors.
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Research context
OpenAlex topics: Conducting polymers and applications · Supercapacitor Materials and Fabrication · Carbon Nanotubes in Composites
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Physics and Electronics, University of Puerto Rico at Humacao 1 , Humacao, PR 00791, USA
Department of Chemistry, University of Puerto Rico at Humacao 2 , PR 00791, USA
Funding
National Science Foundation
References (27)
Show source-provided references
1. Direct observation of the tetrahedral bonding in graphitized carbon black by high resolution electron microscopy10.1016/0022-0248(80)90013-5 ↗
2. C60: Buckminsterfullerene10.1038/318162a0 ↗
3. Helical microtubules of graphitic carbon10.1038/354056a0 ↗
4. Electric field effect in atomically thin carbon films
5. Self-assembly of monodisperse starburst carbon spheres into hierarchically organized nanostructured supercapacitor electrodes10.1021/acsami.5b01147 ↗
6. Fabrication of hierarchical porous carbon spheres for electrochemical capacitor application10.1246/cl.150909 ↗
7. Monodispersed hard carbon spherules with uniform nanopores10.1016/s0008-6223(01)00040-9 ↗
8. Novel spherical microporous carbon as anode material for Li-ion batteries
9. Replication and coating of silica templates by hydrothermal carbonization10.1002/adfm.200600501 ↗
10. Aminated hydrophilic ordered mesoporous carbons10.1039/b703569a ↗
11. Synthesis of carbon micro-spheres by a glucose hydrothermal method10.1016/j.matlet.2007.08.011 ↗
12. Nanoporous carbon spheres and their application in dispersing silver nanoparticles10.1016/j.apsusc.2009.01.056 ↗
13. Hydrothermal synthesis, characterization, and KOH activation of carbon spheres from glucose
14. Facile fabrication of carbon spheres/n-Si junction diodes based on sucrose10.1007/s10854-016-5445-x ↗
15. Electron transport mechanisms in polymer-carbon sphere composites10.1063/1.4955166 ↗
16. Polyaniline: Protonic acid doping of the emeraldine form to the metallic regime10.1016/0379-6779(86)90070-6 ↗
17. Temperature dependence of the resistance of self-assembled polyaniline nanotubes doped with 2-acrylamido-2-methyl-1-propanesulfonic acid10.1016/j.synthmet.2004.10.016 ↗
18. Low percolation threshold in nanocomposites based on oxidized single wall carbon nanotubes and poly(butylene terephthalate)10.1021/ma049440r ↗
19. DC and AC conductivity of carbon nanotubes-polyepoxy composites10.1021/ma021263b ↗
20. Universality and percolation in biodegradable poly(-caprolactone)/multi-walled carbon nanotube nanocomposites from broad band alternating and direct current conductivity at various temperatures10.1021/ma102598h ↗
21. Universal resistivity-strain dependence of carbon nanotube/polymer composites10.1103/physrevb.76.195433 ↗
22. Positive temperature coefficient effect of epoxy resin filled with short carbon fibers10.1295/polymj.30.381 ↗
23. Electrical conducting behaviors in polymeric composites with carbonaceous fillers10.1002/polb.21115 ↗
24. Evaluation by tunneling effect for the temperature-dependent electric conductivity of polymer carbon fiber composites with visco-elastic properties10.1038/pj.2013.40 ↗
25. Carbon black self-networking induced co-continuity of immiscible polymer blends10.1016/j.polymer.2010.03.007 ↗
26. Crossover from Mott to Efros-Shklovskii variable range hopping conductivity in InxOy films10.1103/physrevb.44.3599 ↗
27. Percolation and conduction10.1103/revmodphys.45.574 ↗