The aqueous Zn-ion battery (ZIBs) is regarded as the most promising alternative energy storage system. However, the poor shelf life and restoration capacity caused by dendrite growth and the irreversible consumption of metal Zn anode, are remaining challenges for practical cell technologies. In this work, a hierarchically three-dimensional Zn²⁺-conductor gel electrolyte (Alg-Zn) is prepared based on ion-crosslinking to enable highly reversible dendrite-free zinc metal anode. The Alg-Zn possesses a high ionic conductivity of 1.83×10^-2 S cm⁻¹ and superior mechanical performance for aqueous ZIBs applications. Given the ion-confinement capability in gel electrolyte and deliberated characterization of symmetric Zn/Zn over 270 h cycled testing, it can effectively suppress dendrite growth and reduce the generation of irreversible by-products. By coupling with this gel electrolyte, the Zn/MnO₂ batteries exhibit good cycling stability and rate performance. Especially, after resting over 60 h, the capacity can rapidly recover and maintain ∼320 mA h g^-1. This work demonstrates that the gel electrolyte can effectively suppress the notorious parasitic reactions for static states usually in the Newtonian liquid electrolytes, and thus endow the Zn-based battery with outstanding shelf life and restoration capacity.

水性锌离子电池（ZIBs）被认为是最有前途的替代能源存储系统。然而，由于枝晶生长和金属锌阳极不可逆消耗而导致的较差的保存期限和恢复能力，仍然是实际电池技术面临的挑战。在这项工作中，基于离子交联制备了分级的三维Zn ²⁺导体凝胶电解质（Alg-Zn），以实现高度可逆的无枝晶锌金属阳极。Alg-Zn具有1.83×10 ^-2 S cm ^-1的高离子电导率以及针对水性ZIBs应用的卓越机械性能。鉴于凝胶电解质中的离子限制能力以及经过270 h循环测试的对称Zn / Zn的刻意表征，它可以有效抑制枝晶生长并减少不可逆副产物的产生。通过与该凝胶电解质偶联，Zn / MnO ₂电池表现出良好的循环稳定性和倍率性能。特别是在静置60小时后，容量可以迅速恢复并维持约320 mA hg ^-1。这项工作表明，凝胶电解质可以有效地抑制通常在牛顿液体电解质中因静电引起的臭名昭著的寄生反应，从而使锌基电池具有出色的保存期限和恢复能力。