Solid-state batteries with metallic anodes have attracted great attention due to their high energy density and safety. As an indispensable part of these batteries, solid-state electrolytes (SSEs) with excellent mechanical strength and non-flammability play a significant role in suppressing the growth of dendrites and eliminating the risk of short circuits, whose development could greatly promote the overall battery performance. Recently, metal–organic frameworks (MOFs), a type of porous crystalline inorganic–organic material, have shown potential for the fabrication of high-performance SSEs, which have become an emerging research direction. Benefiting from the rich porosity, controllable functionality and modularity, MOFs not only offer great opportunities for manipulating the physicochemical and electrochemical properties of SSEs, but also provide ideal platforms for investigating the underlying mechanisms of ion conduction and the structure–property relationships. In this perspective, the development of MOF-based SSEs, which include MOF-incorporated polymer hybrids, ionic liquid-laden MOF hybrids, and neat MOFs as SSEs, is outlined. By discussing the pioneering works, both the opportunities and challenges in each SSE category are presented. Additionally, some design principles for MOFs and MOF-based SSEs, as well as the future directions for further development are provided.

中文翻译：

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固态电解质的金属有机骨架

具有金属阳极的固态电池由于其高能量密度和安全性而备受关注。作为这些电池必不可少的部分，具有优异机械强度和不燃性的固态电解质（SSE）在抑制树枝状晶体的生长和消除短路风险方面起着重要作用，其发展可以极大地提高整体电池性能。最近，金属-有机骨架（MOF）是一种多孔晶体无机-有机材料，显示出制造高性能SSE的潜力，这已成为新兴的研究方向。得益于其丰富的孔隙率，可控的功能性和模块化，MOF不仅为操纵SSE的物理化学和电化学性质提供了巨大的机会，但是，它也提供了理想的平台来研究离子传导的潜在机理以及结构与性质之间的关系。从这个角度出发，概述了基于MOF的SSE的开发，其中包括掺入MOF的聚合物杂化物，负载离子液体的MOF杂化物以及纯净的MOF作为SSE。通过讨论开创性工作，每个上交所类别中的机遇和挑战都将呈现出来。此外，还提供了MOF和基于MOF的SSE的一些设计原理，以及进一步开发的未来方向。通过讨论开创性工作，每个上交所类别中的机遇和挑战都将呈现出来。此外，还提供了MOF和基于MOF的SSE的一些设计原理，以及进一步开发的未来方向。通过讨论开拓性工作，每个SSE类别中的机遇和挑战都将呈现出来。此外，还提供了MOF和基于MOF的SSE的一些设计原理，以及进一步开发的未来方向。