Li-O batteries are recognized for their high theoretical capacity and energy density, positioning them as excellent candidates for next-generation energy storage. This study explores the use of Metal-Organic Frameworks (MOFs) with high specific surface areas and open metal sites as cathode materials to address existing challenges. We developed conductive "cactus-like" composites by employing hydroxylated graphene (G-OH) as a substrate to grow columnar M(HHTP) and MM(HHTP) (M = Cu, Ni) in a one-pot synthesis, enhancing the structure's conductivity and order. The cathode, especially the [CuNi(HHTP)]-(G-OH) composition, demonstrated a specific capacity of up to 12 542 mA h g at a current density of 50 mA g and maintained stability over more than 40 cycles at a limited capacity of 500 mA h g in an O atmosphere. This performance surpasses that of M(HHTP), MM(HHTP), or G-OH alone, highlighting the potential of MOF-based composites in improving the efficiency and durability of Li-O batteries and opening new avenues for cathode material design.
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