The Influence of Glycerol and Formaldehyde in Gelatin-Based Polymer Electrolytes

In the present work, one host natural matrix – gelatin – has been doped with magnesium triflate (Mg(CF₃SO₃)₂). Using gelatin as host polymer and magnesium triflate as salt, thin films were produced by varying the amount of glycerol and formaldehyde. The behavior of the samples produced was evaluated using techniques such as thermal analysis (thermogravimetric analysis – TGA and differential scanning calorimetry – DSC), complex impedance spectroscopy, and electrochemical stability. The electrolyte films produced were obtained as transparent and amorphous samples with encouraging electrochemical and thermal properties.