Effect of acid dopants in biodegradable gel polymer electrolyte and the performance in an electrochemical double layer capacitor

Y. N. Sudhakar, M. Selvakumar, D. Krishna Bhat

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Proton-conducting biodegradable gellan gum gel polymer electrolytes (GPEs) have been prepared using three different dopants, namely ortho-phosphoric (o-H3PO4), sulfuric (H2SO4) and hydrochloric acids (HCl). The GPEs were cross-linked using borax. The polymeric gels were characterized by spectroscopic, thermal, ionic conductivities and dielectric measurements. Proton conductivity was in the range of 5.1 × 10-3 to 3.7 × 10-4 s cm-1 and activation energies were between 0.14 meV and 0.19 meV, at different temperatures. Among the doped acids, the H3PO4 doped GPE exhibited thermal stability at varying temperature. Electrochemical double layer capacitors (EDLCs) were fabricated using activated carbon as electrode material and GPEs. The EDLCs were tested using cyclic voltammetry, ac impedance spectroscopic and galvanostatic charge-discharge techniques. The maximum specific capacitance value was 146 F g-1 at a scan rate of 2 mV s-1. Quite stable values were obtained at a constant current density up to 1000 cycles.

Original languageEnglish
Article number095702
JournalPhysica Scripta
Volume90
Issue number9
DOIs
Publication statusPublished - 01-09-2015

Fingerprint

electrochemical capacitors
Electrolyte
Capacitor
Polymers
electrolytes
gels
acids
polymers
Conductivity
Thermal Stability
protons
hydrochloric acid
Activation Energy
activated carbon
sulfuric acid
electrode materials
Capacitance
Impedance
ion currents
Electrode

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • Mathematical Physics
  • Condensed Matter Physics
  • Physics and Astronomy(all)

Cite this

@article{92472a07c4c44dedac9f3e486cf5840d,
title = "Effect of acid dopants in biodegradable gel polymer electrolyte and the performance in an electrochemical double layer capacitor",
abstract = "Proton-conducting biodegradable gellan gum gel polymer electrolytes (GPEs) have been prepared using three different dopants, namely ortho-phosphoric (o-H3PO4), sulfuric (H2SO4) and hydrochloric acids (HCl). The GPEs were cross-linked using borax. The polymeric gels were characterized by spectroscopic, thermal, ionic conductivities and dielectric measurements. Proton conductivity was in the range of 5.1 × 10-3 to 3.7 × 10-4 s cm-1 and activation energies were between 0.14 meV and 0.19 meV, at different temperatures. Among the doped acids, the H3PO4 doped GPE exhibited thermal stability at varying temperature. Electrochemical double layer capacitors (EDLCs) were fabricated using activated carbon as electrode material and GPEs. The EDLCs were tested using cyclic voltammetry, ac impedance spectroscopic and galvanostatic charge-discharge techniques. The maximum specific capacitance value was 146 F g-1 at a scan rate of 2 mV s-1. Quite stable values were obtained at a constant current density up to 1000 cycles.",
author = "Sudhakar, {Y. N.} and M. Selvakumar and Bhat, {D. Krishna}",
year = "2015",
month = "9",
day = "1",
doi = "10.1088/0031-8949/90/9/095702",
language = "English",
volume = "90",
journal = "Physica Scripta",
issn = "0031-8949",
publisher = "IOP Publishing Ltd.",
number = "9",

}

Effect of acid dopants in biodegradable gel polymer electrolyte and the performance in an electrochemical double layer capacitor. / Sudhakar, Y. N.; Selvakumar, M.; Bhat, D. Krishna.

In: Physica Scripta, Vol. 90, No. 9, 095702, 01.09.2015.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Effect of acid dopants in biodegradable gel polymer electrolyte and the performance in an electrochemical double layer capacitor

AU - Sudhakar, Y. N.

AU - Selvakumar, M.

AU - Bhat, D. Krishna

PY - 2015/9/1

Y1 - 2015/9/1

N2 - Proton-conducting biodegradable gellan gum gel polymer electrolytes (GPEs) have been prepared using three different dopants, namely ortho-phosphoric (o-H3PO4), sulfuric (H2SO4) and hydrochloric acids (HCl). The GPEs were cross-linked using borax. The polymeric gels were characterized by spectroscopic, thermal, ionic conductivities and dielectric measurements. Proton conductivity was in the range of 5.1 × 10-3 to 3.7 × 10-4 s cm-1 and activation energies were between 0.14 meV and 0.19 meV, at different temperatures. Among the doped acids, the H3PO4 doped GPE exhibited thermal stability at varying temperature. Electrochemical double layer capacitors (EDLCs) were fabricated using activated carbon as electrode material and GPEs. The EDLCs were tested using cyclic voltammetry, ac impedance spectroscopic and galvanostatic charge-discharge techniques. The maximum specific capacitance value was 146 F g-1 at a scan rate of 2 mV s-1. Quite stable values were obtained at a constant current density up to 1000 cycles.

AB - Proton-conducting biodegradable gellan gum gel polymer electrolytes (GPEs) have been prepared using three different dopants, namely ortho-phosphoric (o-H3PO4), sulfuric (H2SO4) and hydrochloric acids (HCl). The GPEs were cross-linked using borax. The polymeric gels were characterized by spectroscopic, thermal, ionic conductivities and dielectric measurements. Proton conductivity was in the range of 5.1 × 10-3 to 3.7 × 10-4 s cm-1 and activation energies were between 0.14 meV and 0.19 meV, at different temperatures. Among the doped acids, the H3PO4 doped GPE exhibited thermal stability at varying temperature. Electrochemical double layer capacitors (EDLCs) were fabricated using activated carbon as electrode material and GPEs. The EDLCs were tested using cyclic voltammetry, ac impedance spectroscopic and galvanostatic charge-discharge techniques. The maximum specific capacitance value was 146 F g-1 at a scan rate of 2 mV s-1. Quite stable values were obtained at a constant current density up to 1000 cycles.

UR - http://www.scopus.com/inward/record.url?scp=84941249074&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84941249074&partnerID=8YFLogxK

U2 - 10.1088/0031-8949/90/9/095702

DO - 10.1088/0031-8949/90/9/095702

M3 - Article

VL - 90

JO - Physica Scripta

JF - Physica Scripta

SN - 0031-8949

IS - 9

M1 - 095702

ER -