Nanostructured NiO for electrochemical capacitors: synthesis and electrochemical properties

A single phase nanostructured nickel oxide (NiO) crystalline product was synthesized via a simple solvothermal synthesis protocol by using nitrate–citrate precursor having Ni(NO 3 ) 2 as starting material. The thermal decomposition of the as-formed gel precursor leading to the formation of crystalli...

Full description

Saved in:
Bibliographic Details
Published in:Journal of solid state electrochemistry 2008-08, Vol.12 (7-8), p.1003-1009
Main Authors: Nathan, Teressa, Aziz, A., Noor, A. F., Prabaharan, S. R. S.
Format: Article
Language:English
Subjects:
Analytical Chemistry
Characterization and Evaluation of Materials
Chemistry
Chemistry and Materials Science
Condensed Matter Physics
Electrochemistry
Energy Storage
Original Paper
Physical Chemistry
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A single phase nanostructured nickel oxide (NiO) crystalline product was synthesized via a simple solvothermal synthesis protocol by using nitrate–citrate precursor having Ni(NO 3 ) 2 as starting material. The thermal decomposition of the as-formed gel precursor leading to the formation of crystalline NiO was monitored by TG analysis under ambient conditions. The as-prepared product was subjected to thermal treatment at 400 °C for 1 h in air, exhibited a single phase cubic structure as confirmed by XRD and the nanostructure of the product was characterized by FE-SEM and HR-TEM/SAED analysis. It is thus confirmed that the particle size of the product was found to be within 7–15 nm range. The rate-dependent cyclic voltammetry reveals the pseudocapacitive behavior of the product when employed as working electrode in a three-electrode electrochemical cell containing 1 M KOH aqueous electrolyte with platinum (pt) and saturated calomel electrode (SCE) as counter and reference electrodes, respectively, yielding a capacitance of ~200 F g -1 .
ISSN:1432-8488
1433-0768
DOI:10.1007/s10008-007-0465-3