Nickel/cobalt-layered double hydroxides (NiCo-LDH) have been attracted increasing interest in the applications of anode materials for lithium ion battery (LIB), but the low cycle stability and rate performance are still limited its practice applications. To achieve high performance LIB, the surface-confined strategy has been applied to design and fabricate a new anode material of NiCo-LDH nanosheet anchored on the surface of Ti₃C₂ MXene (NiCo-LDH/Ti₃C₂). The ultra-thin, bended and wrinkled α-phase crystal with an interlayer spacing of 8.1 Å can arrange on the conductive substrates Ti₃C₂ MXene directly, resulting in high electrolyte diffusion ability and low internal resistance. Furthermore, chemical bond interactions between the highly conductive Ti₃C₂ MXene and NiCo-LDH nanosheets can greatly increase the ion and electron transport and reduce the volume expansion of NiCo-LDH during Li ion intercalation. As expected, the discharge capacity of 562 mAh g⁻¹ at 5.0 A g⁻¹ for 800 cycles without degradation can be achieved, rate capability and cycle performance are better than that of NiCo-LDH (~100 mAh g⁻¹). Furthermore, the density function theory (DFT) calculations were performed to demonstrate that NiCo-LDH/Ti₃C₂ system can be used as a highly desirable and promising anode material for lithium ion battery.

镍/钴层状双氢氧化物（NiCo-LDH）在锂离子电池负极材料（LIB）的应用中引起了越来越多的兴趣，但是低循环稳定性和倍率性能仍然限制了其实际应用。为了获得高性能的LIB，已采用表面受限策略来设计和制造锚定在Ti ₃ C ₂ MXene表面的NiCo -LDH纳米片的新阳极材料（NiCo-LDH / Ti ₃ C ₂）。中间层间距为8.1Å的超薄，弯曲和起皱的α相晶体可以布置在导电衬底Ti ₃ C _2上直接使用MXene，导致电解质扩散能力高和内部电阻低。此外，高导电性的Ti ₃ C ₂ MXene和NiCo-LDH纳米片之间的化学键相互作用可以大大增加离子和电子的传输，并减少Li离子嵌入过程中NiCo-LDH的体积膨胀。如所期望的，在5.0A g ^-1下在800次循环中的562mAh g ^-1的放电容量可以实现而没有降解，速率能力和循环性能优于NiCo-LDH（〜100 mAh g ^-1）。此外，进行密度函数理论（DFT）计算以证明NiCo-LDH / Ti ₃ C ₂ 该系统可以用作锂离子电池的非常理想和有希望的负极材料。