Lithium-ion capacitors (LICs) are the new generation of hybrid energy storage devices because they combine the advantages of both lithium-ion batteries and supercapacitors. This paper reports a three-dimensional N-doped porous carbon microspheres (NPCM) prepared from polymers with aromatic skeletons, and in-situ growth of FeTe₂ nanocrystals in carbon microspheres to form 3D network nano-hybrid FeTe₂@NPCM-2 composite. This porous microsphere structure facilitates the provision of sufficient room to buffer the large volume expansion effects of the FeTe₂ cycle, the unique carbon matrix NPCM has numerous active sites, excellent electrical conductivity and stable tap density. Simultaneously, using biomass mung-bean shells as precursor to prepare hierarchical porous carbon (HPC) as cathode material of LIC, it exhibits a huge specific surface area (SSA) (2103.31 m² g⁻¹), abundant micro-mesopores and possible oxygen-containing functional groups. The constructed LIC FeTe₂@NPCM-2//HPC and NPCM//HPC have ultrahigh energy density (228.29 and 192.96 W h kg⁻¹) and superior power density (10 and 10 kW kg⁻¹) and good cycle retention rate. Hence, we hope that lithium-ion capacitors with transition metal tellurides as anodes have broad application prospects in the fields of new energy 3C electronic products and hybrid vehicles.

锂离子电容器（LIC）是新一代混合式能量存储设备，因为它们结合了锂离子电池和超级电容器的优点。本文报道了由具有芳香族骨架的聚合物制备的三维N掺杂多孔碳微球（NPCM），并在碳微球中原位生长FeTe ₂纳米晶体，以形成3D网络纳米杂化FeTe ₂ @ NPCM-2复合材料。这种多孔的微球结构有助于提供足够的空间来缓冲FeTe ₂的大体积膨胀效应循环中，独特的碳基质NPCM具有许多活性位点，出色的导电性和稳定的振实密度。同时，以生物质绿豆壳为前驱体制备分层多孔碳（HPC）作为LIC的阴极材料，它具有巨大的比表面积（SSA）（2103.31 m ²  g ^-1），丰富的微中孔和可能的氧气含官能团。构造的LIC FeTe ₂ @ NPCM-2 // HPC和NPCM // HPC具有超高能量密度（228.29和192.96 W h kg ^-1）和优越的功率密度（10和10 kW kg ^-1）和良好的循环保留率。因此，我们希望以过渡金属碲化物为阳极的锂离子电容器在新能源3C电子产品和混合动力汽车领域具有广阔的应用前景。