Here, we lay the design rules for linking microporous polymer membrane architecture and pore chemistry to membrane stability, conductivity, and transport selectivity in aqueous electrolytes over a broad range of pH. We tie these attributes to prospects for crossover-free electrochemical cell operation. These guiding principles are applied to two emerging cell chemistries for grid batteries: specifically, Zn–TEMPO-4-sulfate and Zn–K₄Fe(CN)₆ cells. Key to our success is the placement of ionizable amidoxime functionalities, which are stable at high pH, within the pores of microporous ladder polymer membranes, yielding a family of charge-neutral and cation exchange membranes at low and high pH, respectively—which we call AquaPIMs. Their notably high conductivity (up to 21.5 mS cm⁻¹ in 5.0 M aqueous KOH) and high transport selectivity (up to 10⁴ reduction in active-material permeability through the membrane) suggest exciting opportunities for battery development, even beyond those presently demonstrated.

在这里，我们奠定了将微孔聚合物膜结构和孔化学与膜的稳定性，电导率和在宽范围的pH范围内的水性电解质中的迁移选择性联系起来的设计规则。我们将这些属性与无交叉电化学电池操作的前景联系在一起。这些指导原则适用于两种新兴的网格电池化学电池：具体地说，是Zn–TEMPO-4-硫酸盐和Zn–K ₄ Fe（CN）₆电池。我们成功的关键是在微孔梯状聚合物膜的孔中放置可电离的a胺肟官能团，该官能团在高pH下稳定，从而分别在低pH和高pH下产生一类电荷中性膜和阳离子交换膜，我们称之为AquaPIM。它们极高的电导率（高达21.5 mS cm在5.0 M的KOH水溶液中为^-1）和高的运输选择性（活性物质透过膜的渗透率最多降低10 ⁴），为电池开发提供了令人兴奋的机会，甚至超出了目前所展示的机会。