Solid Polymer Electrolytes for Lithium Batteries and Beyond

Dear Colleagues,

Research on solid polymer electrolytes (SPEs), which seeks to overcome the limitations of conventional liquid electrolytes, has emerged as an important frontier in energy storage technology. These materials eliminate the safety concerns associated with flammable organic solvents while also enabling next-generation battery design, including flexible devices. The growing demand for high-energy-density, safe, and sustainable energy storage solutions has intensified research of SPEs, particularly for lithium-ion batteries and emerging technologies like lithium metal batteries, sodium-ion, and multivalent-ion systems.

This Special Issue aims to disseminate the most recent advances in solid polymer electrolyte research, covering fundamental science, materials development, upscaling, and technological applications through both original research outputs and comprehensive reviews of the state of the art.

Areas of interest may include, but are not limited to, the following topics:

• Novel polymer electrolyte design strategies;
• Polymer electrolytes with smart functionalities including self-healing;
• Ion transport mechanisms and conductivity enhancement;
• Polymer–ceramic composite electrolytes;
• Interface engineering and electrode compatibility;
• Mechanical properties and processability;
• Thermal stability and safety characteristics;
• Beyond lithium—sodium and multivalent systems;
• Advanced characterization techniques;
• Computational modelling and simulation;
• Manufacturing and scalability considerations;
• Post-mortem analysis and failure mechanisms in polymer electrolyte systems;
• Research on scalability and large-scale solid-state battery manufacturing.

Research on solid-state batteries that have at least one compound as polymer (e.g., polymer–ceramic composite electrolyte or gel electrolytes) is highly encouraged. Fuel cell applications, especially with polymer electrolyte fuel cells, and research on polymer compounds in flow batteries are considered to be beyond the scope of this Special Issue.

Dr. Pavlo Ivanchenko
Dr. Kamil Burak Dermenci
Guest Editors

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