Polymer-based electrolytes for solid-state lithium batteries with a wide operating temperature range

Polymer-based electrolytes have high interface compatibility, good safety, and remarkable processability and are ideal for solid-state lithium batteries. However, the electrochemical performance of solid-state lithium batteries deteriorates severely at high or low temperatures, resulting in dramatic energy and power loss, cycling lifetime degradation, and safety issues. Herein, the latest advances of polymer-based electrolytes for solid-state lithium batteries are reviewed for wide temperature applications. The limitations for battery developments under high or low temperatures are systematically analyzed, with special focus on the ion transport kinetics and the interfacial stability between electrodes and the electrolyte. Applications of polymer-based electrolytes in solid-state lithium batteries that can work over a wide temperature range are summarized. Moreover, perspectives of polymer-based electrolytes for solid-state lithium batteries are also outlined.