Abstract Transition metal phosphides with superior electrical conductivity and a large number of electrochemically active sites, have become a research hotspot in various energy-related research fields. However, CoMoP2-based materials were rarely reported, especially in the rechargeable batteries. Herein, CoMoP2 nanoparticles anchored on N, P co-doped carbon nanosheets (CoMoP2@NPC) were prepared through the simple pyrolysis of organic precursor in the presence of phosphoric acid. When used as electrode materials, the as-prepared CoMoP2@NPC electrode exhibited good electrocatalytic activities towards oxygen reduction and oxygen evolution reactions for Li-O2 batteries. With the unique structure, NPC nanosheets could not only improve electrical conductivity of the composite, but also relive volume changes during cycling to expose the active sites of CoMoP2 nanoparticles. This work introduces a highly-effective strategy for preparing carbon materials embedded bimetal phosphides for energy storage and conversion devices.

中文翻译：

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CoMoP2 纳米粒子锚定在 N、P 掺杂的碳纳米片上，用于高性能锂氧电池

摘要 过渡金属磷化物具有优异的导电性和大量的电化学活性位点，已成为各个能源相关研究领域的研究热点。然而，很少报道基于 CoMoP2 的材料，尤其是在可充电电池中。在此，通过有机前驱体在磷酸存在下的简单热解制备了锚定在 N、P 共掺杂碳纳米片上的 CoMoP2 纳米颗粒（CoMoP2@NPC）。当用作电极材料时，所制备的 CoMoP2@NPC 电极对 Li-O2 电池的氧还原和析氧反应表现出良好的电催化活性。凭借独特的结构，NPC 纳米片不仅可以提高复合材料的导电性，并且在循环过程中重温体积变化以暴露 CoMoP2 纳米颗粒的活性位点。这项工作引入了一种高效的策略，用于制备用于能量存储和转换设备的碳材料嵌入双金属磷化物。