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Imidazolium ionic liquids as electrolytes for manganese dioxide free Leclanché batteries

Author

Listed:
  • Stracke, M.P.
  • Migliorini, M.V.
  • Lissner, E.
  • Schrekker, H.S.
  • Dupont, J.
  • Gonçalves, R.S.

Abstract

A set of four imidazolium ionic liquids (solid at room temperature) and one imidazolium ionic solid was screened for its potential as electrolytes in manganese dioxide free Leclanché batteries, equipped with a zinc anode and graphite cathode. Electrical impedance spectroscopy allowed to determine the room-temperature ionic solids (RTISs) ionic conductivities, which was the highest for carboxylic acid functionalized RTIS 3 [C2O2MIm][Cl]. The toxic manganese dioxide was substituted by benzoquinone. A systematic ionic conductivity optimization of RTIS 3-benzoquinone-ZnSO4-H2O mixtures at room temperature resulted in the identification of the following conditions for the Leclanché battery studies: 50 mg of a 50:50 RTIS:benzoquinone mixture and 96 mg of water. The chronopotentiometric experiments with a constant current of 5 [mu]A showed a remarkable performance for the RTIS 3 based battery. The potential (1.47 V) and stability is comparable to that of the commercial Rayovac® battery filling (model AA). Furthermore, linear potentiodynamic voltammetry (0.01 V/s) and chronoamperometric analysis at short-circuit conditions (0.0 V) validated the RTIS 3-benzoquinone-water battery as a promising alternative for manganese dioxide free Leclanché batteries.

Suggested Citation

  • Stracke, M.P. & Migliorini, M.V. & Lissner, E. & Schrekker, H.S. & Dupont, J. & Gonçalves, R.S., 2009. "Imidazolium ionic liquids as electrolytes for manganese dioxide free Leclanché batteries," Applied Energy, Elsevier, vol. 86(9), pages 1512-1516, September.
    • Handle: RePEc:eee:appene:v:86:y:2009:i:9:p:1512-1516
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    Cited by:

    1. Pei, Pucheng & Wang, Keliang & Ma, Ze, 2014. "Technologies for extending zinc–air battery’s cyclelife: A review," Applied Energy, Elsevier, vol. 128(C), pages 315-324.

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