Dong Yunbing, Xiong Chunrong, Zhang Yilu, Xing Shuai, Jiang Hong
Special Glass Key Lab of Hainan Province, Hainan University, Hainan, Haikou, 570228, People's Republic of China.
Nanotechnology. 2016 Mar 11;27(10):105704. doi: 10.1088/0957-4484/27/10/105704. Epub 2016 Feb 11.
Lithium titanate nanotubes (Li-TNTs) have been successfully synthesized. The inner and outer diameters of the nanotubes are 5 nm and 8 nm with an interlayer spacing of 0.83 nm. The nanotubes were in accordance with the Li1.81H0.19Ti2O5 · xH2O phase. The chemical component was Li0.9H1.1Ti2O5 · H2O as determined by ICP-AES. The Li-TNT-supported WO3 nanoparticle (WO3/Li-TNTs) thin film was prepared onto ITO glass via spin-coating and then fabricated with an electrochromic device. The Li ion diffusion coefficient in the WO3/Li-TNT film was 6.1 × 10(-10) cm(2) s(-1), which is eight times higher than that for the pure WO3 film. The transmittance contrast of the pure WO3-based ECD was 53.3% at 600 nm. However, this increased to 74.1% for the WO3/Li-TNT-based ECD. Meanwhile, the color-switching times of the WO3/Li-TNT-based ECD were apparently shorter than the ones for the WO3-based ECD.
钛酸锂纳米管（Li-TNTs）已成功合成。纳米管的内径和外径分别为5纳米和8纳米，层间距为0.83纳米。这些纳米管符合Li1.81H0.19Ti2O5·xH2O相。通过电感耦合等离子体发射光谱法（ICP-AES）测定，其化学成分是Li0.9H1.1Ti2O5·H2O。通过旋涂法在氧化铟锡（ITO）玻璃上制备了负载Li-TNT的三氧化钨纳米颗粒（WO3/Li-TNTs）薄膜，然后制作了电致变色器件。WO3/Li-TNT薄膜中的锂离子扩散系数为6.1×10(-10)平方厘米每秒，比纯WO3薄膜高八倍。基于纯WO3的电致变色器件在600纳米处的透过率对比度为53.3%。然而，基于WO3/Li-TNT的电致变色器件的这一数值增加到了74.1%。同时，基于WO3/Li-TNT的电致变色器件的颜色切换时间明显短于基于WO3的电致变色器件。
