Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 11, Issue 47, Pages 44170-44178Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.9b14597
Keywords
sodium-ion battery; anode; titanium dioxide; sulfur doped; carbon sheets; electrochemical performance; pseudocapacitance behavior
Funding
- National Natural Science Foundation of China [51672037, 61727818, 61604031, 51622406, 21673298, 21473258]
- Department of Science and Technology of Sichuan Province [2019YFH0009]
- National Key and Development Program of China [2017YFC0602102]
- Project of Innovation Driven Plan in Central South [2017CX004]
- Hunan Provincial Science and Technology Plan [2017TP1001]
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Well-tailored sulfur-doped anatase titanium dioxide nanoparticles anchored on a large area carbon sheet are designed, where the in situ sulfur-doped titanium dioxide directly comes from titanium oxysulfate and the large-area carbon sheet is derived from glucose. When applied as an anode material for sodium-ion batteries, it exhibits an excellent electrochemical performance including a high capacity [256.4 mA h g-1 at 2 C (1 degrees C = 335 mA h g(-1)) after 500 cycles] and a remarkable rate of cycling stability (100.5 mA h g(-1) at 30 degrees C after 500 cycles). These outstanding sodium storage behaviors are ascribed to the nanosized particles (about 8-12 nm), good electronic conductivity promoted by the incorporation of carbon sheet and sulfur, as well as the unique chemical bond based on the electrostatic interaction.
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