MnO, a promising anode material, has been widely applied in lithium-ion batteries (LIBs) due to it being environmentally friendly, easy to synthesize, and low cost. However, the huge volumetric expansion and particle aggregation that takes place during the charge/discharge process seriously hinder its development. In this study, we fabricate MnO/C composite by pyrolysis metal-organic frameworks (MOFs), which have a porous carbon nanosheet structure that supports MnO nanoparticles. MOFs were chosen as their large interlayer spacing provides sufficient buffer room for the volumetric change of the MnO nano-components during the charge/discharge process, thereby ensuring the stability of the overall structure. This structure greatly improves the electrochemical performance of MnO, resulting in a 96% capacity retention rate after 1000 charge-discharge cycles under 2 A g¹ current density.

MnO 是一种很有前途的负极材料，由于其环境友好、易于合成和成本低，已被广泛应用于锂离子电池（LIBs）中。然而，充放电过程中发生的巨大体积膨胀和颗粒聚集严重阻碍了其发展。在这项研究中，我们通过热解金属有机框架 (MOF) 制造了 MnO/C 复合材料，该框架具有支撑 MnO 纳米颗粒的多孔碳纳米片结构。选择 MOF 是因为它们的大层间距为 MnO 纳米组分在充电/放电过程中的体积变化提供了足够的缓冲空间，从而确保了整体结构的稳定性。这种结构大大提高了MnO的电化学性能，¹电流密度。