A Solid Polymer Electrolyte from Cross-Linked Polytetrahydrofuran for Calcium Ion Conduction

Jiayue Wang, Francielli S. Genier, Hansheng Li, Saeid Biria, Ian D. Hosein

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

Solid networks are produced from polytetrahydrofuran (PTHF) and 3,4-epoxycyclohexylmethyl-3′,4′-epoxycyclohexane carboxylate through visible-light-initiated photo-cross-linking. The networks were loaded with different quantities of calcium nitrate to create solid polymer electrolytes (SPEs). The ion conductivity was determined by impedance spectroscopy, and the thermal properties were determined by thermogravimetric analysis and differential scanning calorimetry. All samples were rubber-like and stable over a temperature range of 30-120 °C. With greater salt loading, the ion conductivity of the electrolytes first increases and then decreases. A sample with a molar O:Ca ratio of 1.9 yielded the highest conductivity of 1.14 × 10-4 S/cm at room temperature and transference number of 0.359 at 70 °C. The response of conductivity to temperature is modeled with both VTF and Arrhenius equations. This copolymer system provides an approach to calcium ion solid electrolytes for solid-state calcium ion batteries.

Original languageEnglish (US)
Pages (from-to)1837-1844
Number of pages8
JournalACS Applied Polymer Materials
Volume1
Issue number7
DOIs
StatePublished - Jul 12 2019

Keywords

  • calcium ion conduction
  • cross-linking
  • ion conductivity
  • polytetrahydrofuran
  • solid polymer electrolyte

ASJC Scopus subject areas

  • Polymers and Plastics
  • Process Chemistry and Technology
  • Organic Chemistry

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