论文标题
TIO $ _2 $带有不同间距的纳米管，fe $ _2 $ o $ _3 $装饰及其对锂离子电池应用的评估
TiO$_2$ nanotubes with different spacing, Fe$_2$O$_3$ decoration and their evaluation for Li-ion battery application
论文作者
论文摘要
在目前的工作中，我们报告了有组织的Tio $ _2 $纳米管层的使用，并具有常规的InterTube间距，以增长高度定义的$α$ -FE $ _2 $ o $ $ $ _3 $ nano-nano-nano-nano-deedles。然后将这些$α$ -FE $ _2 $ _2 $ _3 $装饰的tio $ _2 $ nts探索用于锂离子电池应用，并与经典的封闭式NTS相比，这些NTS都装饰着各种纳米级$α$α$ -fe -fe $ _2 $ _2 $ o $ o $ _3 $。我们表明，具有管子间距的纳米管允许均匀装饰单个纳米管，并定期排列赤铁矿纳米针。管间距还促进了电解质渗透，并且可以产生更好的离子扩散。虽然裸露的封闭式NTS显示出更高的电容，例如71 $μ$ ah cm-2比带有裸露的nts的NTS，例如54 $μ$ AH CM-2，但具有二级金属氧化物的层次装饰，$α$ -fe $ -fe $ -fe $ -FE $ _2 $ _2 $ o $ o $ _3 $，可增强Li-ion电池电池的功能。也就是说，带有$α$ -FE $ _2 $ o $ $ $ _3 $装饰的间隔纳米管具有477 $μ$ AH CM-2的面积电容，即出现的电容近近8倍。但是，与$α$ -fe $ _2 $ o $ $ _3 $装饰饱和为208 $μ$ ah cm-2（即增加3倍）的封闭式NTS的无限额。
In present work, we report on the use of organized TiO$_2$ nanotube layers with a regular intertube spacing for the growth of highly defined $α$-Fe$_2$O$_3$ nano-needles in the interspace. These $α$-Fe$_2$O$_3$ decorated TiO$_2$ NTs are then explored for Li-ion battery applications and compared to classic close-packed NTs that are both decorated with various amounts of nanoscale $α$-Fe$_2$O$_3$. We show that nanotubes with tube-to-tube spacing allow a uniform decoration of individual nanotubes with regular arrangements of hematite nano-needles. The tube spacing also facilitates the electrolyte penetration as well as yields better ion diffusion. While bare close-packed NTs show higher capacitance, e.g., 71 $μ$Ah cm-2 than bare spaced NTs with e.g., 54 $μ$Ah cm-2, the hierarchical decoration with secondary metal oxide, $α$-Fe$_2$O$_3$, remarkably enhances the Li-ion battery performance. Namely, spaced nanotubes with $α$-Fe$_2$O$_3$ decoration have an areal capacitance of 477 $μ$Ah cm-2, i.e., show up to nearly ~8 times higher capacitance. However, the areal capacitance of close-packed NTs with $α$-Fe$_2$O$_3$ decoration saturates at 208 $μ$Ah cm-2, i.e., is limited to ~3 times increase.
