A study on ionic conductivity of a new polymer solid electrolyte

In this paper, the ionic conductivity of a new polymer solid electrolyte prepared by employing both intermacromolecular complexation and plasticization was studied. The experimental results show that a decrease in the molecular weight of the plasticizer, or an increase in the plasticizer content, led to an increase in the ionic conductivity sigma of the system. The equal mole ratio of P(MMA-MAA) to PEO and a higher concentration of lithium salt favour an increase in sigma. In addition, sigma increases with increased temperature and frequency. The system containing the alkali metal salt of a smaller cation or larger anion exhibit higher ionic conductivity.