Fast Ion Conductor - Examples

Examples

Examples of fast ion conductors include beta-alumina solid electrolyte, beta-lead fluoride, zirconium dioxide, silver iodide.

• Inorganic materials:
  • Zirconium dioxide doped with calcium oxide and yttrium oxide, which is conductive for O2- ions and is used in oxygen sensors
  • Beta-alumina solid electrolyte used as a membrane in several types of molten salt electrochemical cells
  • Lanthanum(III) fluoride, conductive for F- ions, used in some ion selective electrodes
  • Silver sulfide, conductive for Ag+ ions, used in some ion selective electrodes
  • Silver iodide, conductive at higher temperatures
  • Copper iodide
  • Beta-lead fluoride, exhibits a continuous growth of conductivity on heating. This property was first discovered by M. Faraday
  • Lead(II) chloride, conductive at higher temperatures
  • Rubidium silver iodide, conductive at room temperature
  • Some perovskite ceramics - strontium titanate, strontium stannate - conductive for O2- ions
  • Zr(HPO₄)₂.nH₂O - conductive for H+ ions
  • UO₂HPO₄.4H₂O - conductive for H+ ions
  • Conductive ceramics - e.g. NASICON (Na₃Zr₂Si₂PO₁₂), a sodium super-ionic conductor

• Organic materials:
  • Gels - polyacrylamides, agar - polymer holds a solution of ion electrolyte
  • A salt dissolved in a polymer - e.g. lithium perchlorate in polyethylene oxide
  • Polyelectrolytes / Ionomers - e.g. Nafion, a H+ conductor