Development of metal-organic framework materials as solid-state polymer electrolytes for lithium-metal batteries: A review

Metal-organic frameworks (MOFs) have broad prospects as functional nanoparticles in lithium metal batteries (LMBs) due to their long-distance arrangement, adjustable size and chemical custom channels. Many MOFs and their derivatives are being studied as substrates or filling components of electrode and electrolyte materials. The application of metal-organic framework materials in this field is expected to further improve the safety, stability, energy density and cycle performance of solid-state LMBs. The controllable synthesis and predictable physical and chemical properties facilitate structure building and exploration of the reaction mechanism of LMBs at the molecular or atomic level. The composition of the electrolyte often has a complex impact on the performance of the battery, especially in flexible solid electrolytes, so the reasonable and controllable design of the three-dimensional electrolyte network is an important topic. In this review, the applications of MOFs and their derivatives in solid-state polymer electrolytes for LMBs are summarized.