Helical silica nanofibers have been prepared based on a sol-gel transcription approach. After covering a layer of m-phenylenediamine formaldehyde resin and consequent carbonization, SiO₂@Fe–N doped C nanofibers with C content of 33.7 wt% and N content of 3.86 wt% were produced successfully. When applied as the electrode material for lithium-ion batteries (LIBs), they exhibit a high reversible capacity of 1274 mA h g⁻¹ in the 1000th cycle and superior rating capability, implying the possibility as outstanding candidate anode materials for LIBs. Additionally, owing to the doping of Fe₂O₃ and N, the nanofibers also exhibit a well-performed oxygen reduction reaction activity, which is comparable to the commercial Pt/C catalyst.

螺旋二氧化硅纳米纤维已经基于溶胶-凝胶转录方法制备。在覆盖了间苯二胺甲醛树脂层并随后碳化之后，成功生产了C含量为33.7 wt％，N含量为3.86 wt％的SiO ₂ @ Fe–N掺杂的C纳米纤维。当用作锂离子电池（LIB）的电极材料时，它们在第1000个循环中表现出1274 mA h g ^-1的高可逆容量，并且具有出众的额定容量，这意味着有可能成为出色的LIB候选阳极材料。另外，由于Fe ₂ O ₃和N的掺杂，纳米纤维还表现出良好的氧还原反应活性，这与市售的Pt / C催化剂相当。