Transforming anatase TiO2 nanorods into ultrafine nanoparticles for advanced electrochemical performance

Anatase TiO2 nanoparticles for lithium-ion batteries

“…However, the results obtained on 4-nm thick particles in Ref. [67] do show the same plateau as in Fig. 6.…”

“…In addition, electrochemical properties even better than in Ref. [67] have also been obtained with larger particles of size 9 nm in [66].…”

“…If the thickness of the surface layer is about 2 nm, which is the typical size in LiFePO 4 , the thickness of the particles might be circa 8 nm, intermediate between 4 nm in Ref. [67] and 20 nm in the present work. In any case, the decrease of the electrochemical performance in Ref.…”

“…For instance, Tan et al [49] have recently reported that coating TiO 2 with a uniform and continuous nitrogen-doped carbon layer with thickness of 4±0.5 nm leads to higher discharge retention and better cycling performance. To answer this question, we can compare our results with prior works that have been published for particles 4 nm thick, obtained either by fragmentation of nanorods [67], or by a two-step room temperature synthesis process [68,69]. In one case [67], the electrochemical properties are better, as these particles delivered a capacity of 200 mAh g -1 for 500 cycles at 1C rate.…”

“…To answer this question, we can compare our results with prior works that have been published for particles 4 nm thick, obtained either by fragmentation of nanorods [67], or by a two-step room temperature synthesis process [68,69]. In one case [67], the electrochemical properties are better, as these particles delivered a capacity of 200 mAh g -1 for 500 cycles at 1C rate. To the contrary, in the other case [68], the opposite is true, since the capacity is circa 155 mAh g -1 at the 30th cycle at C/20 rate in the same voltage range as in Fig.…”