As efficient alternative renewable energy resources, proton-exchange membrane fuel cells (PEMFCs) have received immense attention where proton-conducting materials act as PEMs for efficient proton migration. The recent past has witnessed considerable progress in the use of metal–organic frameworks (MOFs) and coordination polymers (CPs) as solid-state proton conductors (SSPCs) due to their structural superiority and architectural diversity. In order to impart proton conductivity, a variety of intrinsic and extrinsic proton sources have been installed onto these frameworks; however, reports on proton conduction where metal-coordinated water molecules act as solely intrinsic proton sources by virtue of their enhanced acidity are largely unexplored. The key examples of proton conduction driven by coordinated water molecules discussed in this Perspective present some unique features of MOFs and CPs as SSPCs, displaying a wide range of proton conductivity. The scope of works with plausible design principles that are urgently required to be investigated is also highlighted.

中文翻译：

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金属有机骨架和配位聚合物中配位水分子驱动的固态质子传导

作为高效的替代可再生能源，质子交换膜燃料电池 (PEMFC) 受到了极大的关注，其中质子传导材料充当 PEM 以实现高效的质子迁移。由于金属有机骨架 (MOF) 和配位聚合物 (CP) 的结构优势和结构多样性，最近在使用金属有机骨架 (MOF) 和配位聚合物 (CP) 作为固态质子导体 (SSPC) 方面取得了相当大的进展。为了赋予质子传导性，已经在这些框架上安装了各种内在和外在质子源；然而，关于质子传导的报告，其中金属配位的水分子仅作为本征由于其增强的酸度，质子源在很大程度上尚未开发。本观点中讨论的由配位水分子驱动的质子传导的关键示例展示了 MOF 和 CP 作为 SSPC 的一些独特特征，展示了广泛的质子传导性。还强调了迫切需要调查的合理设计原则的作品范围。