Release time:2021-03-15 Hits:
- Key Words:Lithium-ion batteries;Anodes - Energy conversion - Nanocrystals - Stability - Temperature - Titanium dioxide - Transition metal oxides - Transition metals
- Abstract:Developing a facile and green methodology to prepare nanostructured transition metal oxides (TMD) formed by sub-10 nm nanocrystals for the electrochemical energy conversion and storage remains an important challenge. Herein, we present hollow TiO<inf>2</inf> submicrospheres, assembled by 10 nm units via a facile one-step, low-temperature hydrothermal strategy. When used as anodes for lithium ion batteries, the submicrospheres could exhibit excellent rate capabilities of 223, 153, 44 and 22 mA h g<sup>-1</sup> at 1C, 10C, 100C and 300C, respectively. More importantly, they demonstrated a long-term cycling performance and structural stability over 2000 cycles at 10C and even 300C. The superb performances mainly originate from the integration of distinct advantages of the well-defined hollow structures and tiny TiO<inf>2</inf> grains into a single component via the environmental friendly synthesis strategy.<br/> © 2019 The Royal Society of Chemistry.
- Volume:7
- Issue:41
- Translation or Not:no
