Measuring ionic conductivity in electrodes prepared by solvent-free melt extrusion

Area of Science:

• Materials Science
• Electrochemistry
• Polymer Science

Background:

• Battery electrodes require simultaneous electron and ion conductivity for effective charge transfer.
• Current electrode formulations combine ion-conducting polymeric binders and electronically conductive carbon.
• Thermoplastic vulcanizates (TPVs) are explored as potential components in advanced battery electrode designs.

Purpose of the Study:

• To develop and present a reproducible method for quantifying the ionic conductivity of battery electrodes.
• To evaluate the ionic conductivity of electrode formulations incorporating thermoplastic vulcanizates.
• To establish a reliable measurement technique for optimizing electrode performance in energy storage devices.

Main Methods:

• Development of a novel technique for ionic conductivity measurement in composite electrode materials.
• Fabrication of battery electrode samples using formulations containing thermoplastic vulcanizates.
• Systematic characterization of ionic transport properties within the prepared electrodes.

Main Results:

• A reproducible method for measuring ionic conductivity in TPV-containing electrodes was successfully established.
• The ionic conductivity of electrodes formulated with thermoplastic vulcanizates was quantitatively assessed.
• The presented technique provides reliable data for understanding ion transport in these specific electrode compositions.

Conclusions:

• The developed technique offers a reproducible approach to measure ionic conductivity in battery electrodes.
• Thermoplastic vulcanizates can be incorporated into electrode formulations, and their ionic conductivity can be reliably measured.
• This work contributes to the understanding and optimization of materials for advanced electrochemical energy storage.