Record Details

Dendrimer-functionalized magnetic nanoparticles: A new electrode material for electrochemical energy storage devices

DSpace at IIT Bombay

View Archive Info
 
 
Field Value
 
Title Dendrimer-functionalized magnetic nanoparticles: A new electrode material for electrochemical energy storage devices
 
Creator CHANDRA, S
PATEL, MD
LANG, H
BAHADUR, D
 
Subject SUPERCAPACITOR ELECTRODES
GRAPHENE
CARBON
NANOTUBE
ARRAYS
CORE
Dendrimer
Magnetic nanoparticles
Supercapacitors
Impedance
 
Description A 10-arm-NH2 terminated polyamidoamine (PAMAM) dendrimer with a diethylenetriamine core and a redox centre is synthesized using a new protocol. This dendrimer is further used to produce dendrimerfunctionalized magnetic nanoparticles (Fe3O4@D-NH2), which are potential electrode and supercapacitor materials for electrochemical supercapacitors. The electron charge transfer mechanism between the core and the branched surface of the dendrimers is ideal for energy storage. Iron oxide nanoparticles with high specific surface area and porosity are looked upon as electrochemically active materials. Combining the advantages from both dendrimers and iron oxide nanoparticles, porous Fe3O4@D-NH2 is of considerable interest due to its large surface area, unique porous structure, diversified composition and excellent electronic conductivity. These extraordinary features enable Fe3O4@D-NH2 to offer high specific capacitance and charge/discharge rate which make them promising candidates as electrode material in supercapacitors, combining high-energy storage densities with high levels of power delivery. The electrochemical behavior of the material is studied by cyclic voltammetry, which shows typical rectangular I V behavior of an ideal supercapacitor. With a high surface area, the nanoparticles exhibits high charge storage and delivery capabilities possessing optimum capacitance value in the range of 70-120 F/g depending on material loadings in various electrolytes. (C) 2015 Elsevier B.V. All rights reserved.
 
Publisher ELSEVIER SCIENCE BV
 
Date 2016-01-15T04:24:59Z
2016-01-15T04:24:59Z
2015
 
Type Article
 
Identifier JOURNAL OF POWER SOURCES, 280,217-226
0378-7753
1873-2755
http://dx.doi.org/10.1016/j.jpowsour.2015.01.075
http://dspace.library.iitb.ac.in/jspui/handle/100/17751
 
Language en