目的 制备高比容量多孔钛/TiO2纳米管三维自支撑一体化复合电极材料。方法 采用非溶剂致相分离法与高温烧结相结合的方法制备出孔径小、空间利用率高的三维多孔钛平板膜，然后经阳极氧化法在其表面生长TiO2纳米管，从而制备出多孔钛/TiO2纳米管复合薄膜电极。结果 以3 μm粒径钛粉为原料，N-甲基-2-吡咯烷酮、聚乙烯吡咯烷酮、聚丙烯腈为添加剂制备钛膜生坯，经刮膜成型后，在氩气保护下经1000 ℃烧结，得到孔径约为2～6 μm的多孔钛平板膜。采用阳极氧化法在多孔钛平板膜上直接生长TiO2纳米管，制得多孔钛/TiO2纳米管复合薄膜电极。该复合薄膜电极在超级电容器中具有良好的电化学性能，其在2 mA/cm2电流密度下，比电容为385.34 mF/cm2，即使电流密度增加到10 mA/cm2，比电容仍能保持在125.14 mF/cm2。结论 相较于TiO2纳米颗粒，采用此方法制备的多孔钛/TiO2纳米管复合薄膜电极具有良好的电化学性能，可为下一代储能器件提供新的思路。

The works aims to prepare a novel and freestanding three dimensional (3D) porous Ti/TiO2 nanotubes (Ti/TiO2NTs) composite membrane electrode with high capacity. The 3D porous Ti membrane with small pore size and high volume utilization was prepared by nonsolvent induce phase separation (NIPS) and high temperature sintering. Anodic oxidizing process was adopted to generate TiO2 nanotubes on the surface so as to prepare the porous Ti/TiO2NTs composite membrane electrode. The raw Ti membrane was obtained by 3 μm Ti powder, NMP, PVP and PAN. After being scraped, the as-prepared Ti membrane was sintered at 1000 ℃ in argon atmosphere to obtain the porous Ti membrane with pore size of 2~6 μm. TiO2NTs were directly grown on the Ti surface by anodic oxidizing to obtain the Ti/TiO2NTs composite membrane electrode. This novel Ti/TiO2NTs composite membrane electrode showed excellent electrochemical performance for supercapacitor applications. The specific capacitance was up to 385.34 mF/cm2 at current density of 2 mA/cm2. Remarkably, the capacitance still kept 125.14 mF/cm2 at a higher current density of 10 mA/cm2. Compared to TiO2 nanoparticles, the porous Ti/TiO2NTs composite membrane electrode exhibits outstanding electrochemical performance and provides a new way for next-generation storage equipment.