Adaptive Thermoresponsive Hydrogels in Aqueous Zinc‐Ion Batteries: Opportunities and Challenges

ABSTRACT

This review systematically summarizes recent advances in employing thermoresponsive polymers to address the challenges of interfacial instability and thermal runaway in aqueous zinc‐ion batteries (AZIBs), which are promising candidates for safe, low‐cost energy storage. The discussion focuses on three innovative regulatory strategies: self‐healing electrolytes that autonomously repair interfacial defects through reversible sol–gel transitions; intelligent shutdown mechanisms that rapidly block ion transport at a threshold temperature to prevent thermal runaway; and robust electrolyte systems that maintain performance under extreme conditions by preserving physical integrity and optimizing ion solvation. The established correlation between gel‐phase behavior and battery failure mechanisms provides a novel design framework for developing AZIBs with high safety and long cycle life. Finally, future perspectives highlight the need for a rational design framework that links stimuli‐responsive behavior to performance, paving the way for the predictive design of adaptive hydrogel systems.