Poly(acrylic acid) (PAA) is a promising polymer host to support alkaline electrolytes in Zn‐air batteries. Herein, precursors containing different concentrations of monomers, crosslinkers and additives such as zinc oxide in alkaline solution are polymerized to fabricate gel polymer electrolytes (GPEs) via one‐pot synthesis. The compositional effects of the GPEs on battery performance are evaluated and a more efficient cell design is demonstrated. With a vertical double air electrode configuration, ZABs using PAA‐based electrolytes show unprecedented performance including high specific energy (913 Wh kg_Zn⁻¹), excellent cycling stability (at least 160 cycles at 2×10 mA cm⁻²) and high power density output (2×135 mW cm⁻²). The study represents a viable option to replace aqueous electrolytes for high performing ZABs.

中文翻译：

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锌-空气电池的凝胶聚合物电解质的组成效应和电池设计

聚丙烯酸（PAA）是一种有前途的聚合物主体，可支持锌空气电池中的碱性电解质。在此，通过一锅合成法将包含不同浓度的单体，交联剂和添加剂（例如氧化锌）的前体在碱性溶液中聚合，以制备凝胶聚合物电解质（GPE）。评估了GPE对电池性能的成分影响，并展示了更有效的电池设计。借助垂直双空气电极配置，使用基于PAA的电解质的ZAB表现出空前的性能，包括高比能（913 Wh kg _Zn ^-1），出色的循环稳定性（在2×10 mA cm ^-2时至少160次循环）和高功率密度输出（2×135 mW cm ^-2）。这项研究是替代高性能ZAB的水性电解质的可行选择。