Impedance spectroscopy of modified potassium titanates. I

Abstract

The electrochemical and electrophysical properties of the protonated and modified with silver iodide potassium titanates, which can be applied in energy storage units, have been investigated by impedance spectroscopy. It has been shown that the dielectric losses at medium and high frequencies are weakly dependent on the polarizing voltage. It has also been established that transfer in modified potassium titanate can be made through potassium and silver ions. The equivalent scheme of the process has been proposed and the magnitudes of the Warburg impedances have been calculated.

Keywords

• lithium-sulfur cells (batteries)
• sulfur loading in positive electrode
• surface capacity of the sulfur electrode
• lithium polysulfides
• cycling
• sulfolane based electrolytes