To fulfill the requirement for large-scale energy-storage systems, lithium ions batteries have been attracted great attentions. It is necessary to develop the anode material with high rate capability, long cycling life and outstanding safety. Here, N-doped carbon been successfully synthesized and estimated as an anode material for lithium ions batteries. PbLi₂Ti₆O₁₄ is isostructural with SrLi₂Ti₆O₁₄. After nitrogen-doped carbon coating, PbLi₂Ti₆O₁₄@NC delivers a high capacity of 143.2 mAh g⁻¹ at a current density of 100 mA g⁻¹ and remains 104.8 mAh g⁻¹ even at 700 mA g⁻¹. In addition, PbLi₂Ti₆O₁₄@NC also possesses excellent cyclic stability. The reversible capacity of PbLi₂Ti₆O₁₄@NC can keep at 99.7 mAh g⁻¹ after 1500 cycles. Such results are also proved by CV tests and EIS measurements. Meanwhile, the lithium storage mechanism of PbLi₂Ti₆O₁₄@NC is investigated by an in situ XRD technique. It indicates that PbLi₂Ti₆O₁₄@NC has a stable structural host. These aforementioned results suggest that PbLi₂Ti₆O₁₄@NC has great potential working as an anode material for lithium ions batteries.

为了满足大规模储能系统的需求，锂离子电池引起了极大的关注。有必要开发具有高倍率能力，长循环寿命和出色安全性的负极材料。在此，已成功合成并估计了N掺杂的碳，并将其作为锂离子电池的负极材料。PbLi ₂ Ti ₆ O ₁₄与SrLi ₂ Ti ₆ O ₁₄是同构的。氮掺杂碳涂层后，PbLi ₂ Ti ₆ O ₁₄ @NC在100 mA g ^-1的电流密度下可提供143.2 mAh g ^-1的高容量，并保持104.8 mAh g^-1即使在700 mA g ^{-1时也是如此}。另外，PbLi ₂ Ti ₆ O ₁₄ @NC也具有优异的循环稳定性。1500次循环后，PbLi ₂ Ti ₆ O ₁₄ @NC的可逆容量可保持在99.7 mAh g ^-1。CV测试和EIS测量也证明了这样的结果。同时，通过原位XRD技术研究了PbLi ₂ Ti ₆ O ₁₄ @NC的锂存储机理。这表明PbLi ₂ Ti ₆ O ₁₄ @NC具有稳定的结构主体。上述结果表明，PbLi ₂Ti ₆ O ₁₄ @NC具有很大的潜力，可作为锂离子电池的负极材料。