High alkaline ion storage capacity of hollow interwoven structured Sb/TiO2 particles: the galvanic replacement formation mechanism and volumetric buffer effect
- 19 March 2018
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Chemical Communications
- Vol. 54 (32), 4049-4052
- https://doi.org/10.1039/c8cc01279b
Abstract
A new galvanic replacement synthetic strategy using metallic Ti as a template for hollow voids is presented and an intriguing hollow interwoven structured Sb/TiO2 is introduced. The applied Ti can play the triple role of reducing the Sb-ion into Sb, acting as a sacrificial template to generate hollow voids through a structural evolution and behaving as an alternative non-sensitive titanium salt to form TiO2. Interwoven Sb/TiO2 can be readily activated and can also buffer drastic volumetric variations during storage of alkaline ions (e.g. Li+, Na+), thereby demonstrating high capacity and superior cycling ability in rechargeable batteries.Keywords
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