|Title:||Carbon coated anatase TiO2 mesocrystals enabling ultrastable and robust sodium storage||Authors:||Zhang W.
|Keywords:||Carbon coating layer;Electrochemical property;Mesocrystal;Sodium-ion batteries;TiO2||Issue Date:||2017||Journal Volume:||359||Start page/Pages:||64-70||Source:||Journal of Power Sources||Abstract:||
Nanoporous anatase TiO2 mesocrystals with tunable architectures and crystalline phases were successfully fabricated in the presence of the butyl oleate and oleylamine. Especially, the introduced surfactants served as a carbon source, bring a uniform carbon layer (about 2¡V8 nm) for heightening the electronic conductivity. The carbon coated TiO2 mesocrystals assembled from crystalline tiny subunits have more space sites for sodium-ion storage. When the material was applied as an electrode material in rechargeable sodium-ion batteries, it exhibited a superior capacity of about 90 mA h g?1 at 20 C (1 C = 168 mA g?1) and a highly reversible capacity for 5000 cycles, which is the longest cycle life reported for sodium storage in TiO2 electrodes. ? 2017 Elsevier B.V.
|Appears in Collections:||化學工程學系|
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