With the excessive consumption of nonrenewable resources, the exploration of effective and durable materials is highly sought after in the field of sustainable energy conversion and storage system. In this aspect, metalorganic frameworks (MOFs) are a new class of crystalline porous organicinorganic hybrid materials. MOFs have recently been gaining traction in energy-related fields. Owing to the coordination flexibility and multiple accessible oxidation states of vanadium ions or clusters, vanadium-MOFs (V-MOFs) possess unique structural characteristics and satisfactory electrochemical properties. Furthermore, V-MOFs-derived materials also exhibit superior electrical conductivity and stability when used as electrocatalysts and electrode materials. This review summarizes the research progress of V-MOFs (inclusive of pristine V-MOFs, V/M-MOFs, and POVbased MOFs) and their derivatives (vanadium oxides, carbon-coated vanadium oxide, vanadium phosphate, vanadate, and other vanadium doped nanomaterials) in electrochemical energy conversion (water splitting, oxygen reduction reaction) and energy storage (supercapacitor, rechargeable battery). Future possibilities and challenges for V-MOFs and their derivatives in terms of design and synthesis are discussed. Lastly, their applications in energy-related fields are also highlighted.

electric vehicles, and even large-scale grid storage. Its popularization is mainly attributed to its high specific capacity, excellent rate capability, and long cycle life. [1] However, even after nearly thirty years of development since commercialization by Sony in 1991, [2] there are still issues with LIBs that cannot be ignored, which are safety and high production cost due to the scarcity of lithium. [3] Although there are efforts made to recover and extract lithium, such as by recovering spent LIBs [4] and developing new technologies to extract lithium from seawater, [5] scientists are cautious in adopting those approaches and focusing more efforts on seeking alternatives to LIBs.In recent years, "Beyond Lithium" batteries such as Na-ion, [6] K-ion, [7] Zn-ion, [8] Mg-ion, [9] Ca-ion, [10] and Al-ion batteries are becoming increasingly popular. [11,12] Among these, aluminum-ion batteries (AIBs) are considered a promising candidate due to their unique properties from aluminum (Al). Its superiority is mainly reflected in two aspects. Firstly, Al is the most abundant metal element in the earth's crust (≈8% by weight). [13] Secondly, the redox process of Al involves three-electron transfer, providing an opportunity to create high energy density batteries. [14] Even though Al was first reported as a battery anode as early as 1857, [15] it was not until 2011 that the first rechargeable AIB appeared. [16] Archer et al. realized a rechargeable AIB with V 2 O 5 nanowire as the cathode and AlCl 3 /1-Ethyl-3-methylimidazolium chloride ([EMIm]Cl) as the electrolyte, which can charge and discharge for 20 cycles. Although Wen et al. later pointed out that V 2 O 5 is not a chemically stable cathode material for AIBs using chloroaluminate ionic liquid (IL) electrolytes, [17] this work still provides an intriguing picture of AIBs. Rechargeable AIBs can be divided into aqueous and nonaqueous systems based on the electrolyte used. The field of AIBs has made rapid progress in recent years, especially for nonaqueous systems.Ever since the development of AIBs with the use of IL electrolyte and graphitic cathode by Dai et al. in 2015, it has been detonated as research hotspots, [18] and there have been several reviews focusing on nonaqueous AIBs. [11,19] Despite the better current performance of nonaqueous AIBs, the significant advantages of aqueous AIBs (AAIBs) have gained more attention, with an ever-increasing number of researchers joining the odyssey of AAIBs. However, there is only one review that summarizes the status of AAIBs before 2020. [20] In the pastThe high cost and scarcity of lithium resources have prompted researchers to seek alternatives to lithium-ion batteries. Among emerging "Beyond Lithium" batteries, rechargeable aluminum-ion batteries (AIBs) are yet another attractive electrochemical storage device due to their high specific capacity and the abundance of aluminum. Although the current electrochemical performance of nonaqueous AIBs is better than aqueous AIBs (AAIBs), AAIBs have recently gained attention d...

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A partially neutralized polyacrylic acid (Pn−PAA) is used for coating sub‐micron‐sized α‐alumina on a conventional microporous polyolefin separator, fabricating a ceramic‐coated separator (CCS). Pn−PAA acts as a dispersant and binder by adsorbing itself on alpha(α)‐alumina surfaces under acidic condition through the columbic interaction, providing a repulsive force to disperse fine alumina in aqueous suspension, and binds alumina strongly on plasma‐treated separator through hydrogen bonding. This CCS shows favorable wettability in carbonate‐based liquid electrolyte and ionic conduction due to the high hydrophilicity of Pn−PAA and alumina. With that, this study found that Pn−PAA‐made‐CCS yields a substantial adhesion strength of ~106 N/m with enhanced cycle stability, a specific capacity of 145.0 mAh/g after 200 cycles at 1 C at room temperature in half cells (LFP/Li metal).