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Zhong, J. Ion Conductivity. Encyclopedia. Available online: https://encyclopedia.pub/entry/61995 (accessed on 07 November 2026).
Zhong J. Ion Conductivity. Encyclopedia. Available at: https://encyclopedia.pub/entry/61995. Accessed November 07, 2026.
Zhong, Jack. "Ion Conductivity" Encyclopedia, https://encyclopedia.pub/entry/61995 (accessed November 07, 2026).
Zhong, J. (2026, November 06). Ion Conductivity. In Encyclopedia. https://encyclopedia.pub/entry/61995
Zhong, Jack. "Ion Conductivity." Encyclopedia. Web. 06 November, 2026.

Ion Conductivity

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Ion conductivity is the ability of a medium to carry current by the migration of ions, expressed as current density per unit applied field [1]. The value is the sum over species of charge, concentration and mobility, so it depends both on how many mobile ions exist and on how freely they move [2]. In a crystalline solid electrolyte the ions hop between lattice sites or through an amorphous phase, and the activation energy of the hop sets the temperature dependence [1]. In a polymer electrolyte the motion couples to segmental relaxation of the chains above the glass transition, so conductivity follows free volume rather than a simple Arrhenius law [3]. The quantity is measured by impedance spectroscopy, which separates the bulk response from electrode polarisation [2].

ionic conductivity ion hopping activation energy impedance spectroscopy segmental relaxation
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References

  1. Lu, F.F.; Tian, H.K. Dopant-induced modulation of lithium-ion conductivity in cubic garnet solid electrolytes: a first-principles study. Physical Chemistry Chemical Physics 2023, 25, 18973-18982. [CrossRef]
  2. Fu, X.; Wang, Y.; Xu, J.; Yang, Q.; Mao, H.; Xiao, R.; Li, H. First-principles study on a new chloride solid lithium-ion conductor material with high ionic conductivity. Journal of Materials Chemistry A 2024, 12, 10562-10570. [CrossRef]
  3. Yang, H.; Wu, N. Ionic conductivity and ion transport mechanisms of solid‐state lithium‐ion battery electrolytes: A review. Energy Science & Engineering 2022, 10, 1643-1671. [CrossRef]
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Subjects: Materials Science, Ceramics
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Update Date: 06 Nov 2026
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