In this work, a facile and universal synthetic strategy is proposed to synthesize carbon nanofibers/ transition metal oxide composites with a three-dimensional cross-linked structure. The character of its morphology is the carbon nanofiber framework, based on which transition metal oxide nanoparticles and nanosheets (nanoparticles, nanoneedles) can be compounded inside and outside the nanofiber, respectively. The synthesis of this special morphology is achieved by electrospinning, heat treatment, and corrosion. By using this method, a series of hybrid materials including ${\text{Co}}_3{\text{O}}_4$/C nanofibers @ ${\text{Co}}_3{\text{O}}_4$ nanosheets (${\text{Co}}_3{\text{O}}_4$/CFs @ ${\text{Co}}_3{\text{O}}_4$), ZnO/C nanofibers @ ZnO nanoparticles (ZnO/CFs @ ZnO), and CuO/C nanofibers @ CuO nanoneedles (CuO/CFs @ CuO) can be successfully synthesized. The capacity of ${\text{Co}}_3{\text{O}}_4$/CFs @ ${\text{Co}}_3{\text{O}}_4$ can reach 842.4 mAh ${\mathrm{g}}^{-1}$ after 150 cycles, and ZnO/CFs @ ZnO and CuO/CFs @ CuO also show well cycle stability and high specific capacity as 650 mAh ${\mathrm{g}}^{-1}$ and 544 mAh ${\mathrm{g}}^{-1}$ after 600 cycles at 1 A ${\mathrm{g}}^{-1}$. This work can inspire the research of carbon nanofibers framework composite transition metal oxide nanostructure materials for outstanding lithium storage.

在这项工作中，提出了一种简便且通用的合成策略来合成具有三维交联结构的碳纳米纤维/过渡金属氧化物复合材料。其形态特征是碳纳米纤维骨架，过渡金属氧化物纳米粒子和纳米片（纳米粒子、纳米针）可分别复合在纳米纤维内部和外部。这种特殊形态的合成是通过静电纺丝、热处理和腐蚀来实现的。通过使用这种方法，一系列混合材料包括${\text{公司}}_3{\text{哦}}_4$/C 纳米纤维@ ${\text{公司}}_3{\text{哦}}_4$ 纳米片（${\text{公司}}_3{\text{哦}}_4$/CFs @ ${\text{公司}}_3{\text{哦}}_4$)、ZnO/C纳米纤维@ZnO纳米颗粒(ZnO/CFs@ZnO)和CuO/C纳米纤维@CuO纳米针(CuO/CFs@CuO)可以成功合成。的容量${\text{公司}}_3{\text{哦}}_4$/CFs @ ${\text{公司}}_3{\text{哦}}_4$ 可以达到842.4毫安 ${\mathrm{G}}^{-1}$ 150 次循环后，ZnO/CFs@ZnO 和 CuO/CFs@CuO 也表现出良好的循环稳定性和高达 650 mAh 的高比容量 ${\mathrm{G}}^{-1}$ 和 544 毫安时 ${\mathrm{G}}^{-1}$ 1 A 下 600 次循环后 ${\mathrm{G}}^{-1}$. 这项工作可以启发碳纳米纤维骨架复合过渡金属氧化物纳米结构材料的研究，用于优异的锂存储。