Synthesis of Bi2WO6 nanoparticles and its electrochemical properties in different electrolytes for pseudocapacitor electrodes
IR@CECRI: CSIR-Central Electrochemical Research Institute, Karaikudi
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| Title |
Synthesis of Bi2WO6 nanoparticles and its electrochemical properties in different electrolytes for pseudocapacitor electrodes
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| Creator |
Nithya, V.D.
Kalaiselvan, R. Kalpana, D. Vasylechko, L. |
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| Subject |
Electrochemical Power Sources
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| Description |
Nanosized Bi2WO6 particles were successfully synthesized by sonochemical method with an objective to
develop an inexpensive and eco-friendly electrode material for supercapacitors. The prepared material
was subjected to various thermal, structural, morphological, compositional, electrical and electrochemical
studies. Bi2WO6 nanoparticle with homogeneous distribution was achieved through sonochemical
process. The lattice parameter and atomic positions of Bi2WO6 structure were refined through Reitveld
analysis. The electrochemical performance of Bi2WO6 nanoparticles was investigated in various aqueous
electrolytes such as 1 M NaOH, 1 M LiOH, 1 M Na2SO4, 1 M KOH and 6 M KOH solutions. Among these,
the material exhibited an enhanced electrochemical performance in KOH electrolyte due to its smaller
hydration sphere radius, high ionic mobility and lower equivalent series resistance. The charge–discharge
studies rendered a specific capacitance of 608 F/g in 1 M KOH at a current density of 0.5 mA/cm2. Bi2WO6
exhibited an excellent coulombic efficiency and specific capacitance of around 304 F/g at 3 mA/cm2 in
the potential range from
−0.9 to 0.1 V vs Hg/HgO in 1 M KOH electrolyte. The above results assured that
Bi2WO6 could be utilized as suitable negative electrode material for supercapacitor applications and 1 M
KOH could be its desirable electrolyte
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| Publisher |
Elsevier
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| Date |
2013
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| Type |
Article
PeerReviewed |
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| Format |
application/pdf
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| Identifier |
http://cecri.csircentral.net/3056/1/050-2013.pdf
Nithya, V.D. and Kalaiselvan, R. and Kalpana, D. and Vasylechko, L. (2013) Synthesis of Bi2WO6 nanoparticles and its electrochemical properties in different electrolytes for pseudocapacitor electrodes. Electrochimica Acta, 109. pp. 720-731. ISSN 0013-4686 |
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| Relation |
http://www.elsevier.com/locate/electacta
http://cecri.csircentral.net/3056/ |
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