Journal
CHEMISTRYSELECT
Volume 5, Issue 13, Pages 3820-3827Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/slct.202000783
Keywords
TiO2; Nanotubes; Sodium-ion batteries; Carbon network
Categories
Funding
- NSFC [91963118]
- Fundamental Research Funds for the Central Universities [2412019ZD010]
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TiO2, with low cost, highly environmental benignity, and high safety, has been considered to exhibit great potential as an advanced anode material for sodium ion batteries (SIBs), although slow electron/ion transport hinders its development. Here, we find the composite of thin-walled TiO2 nanotubes with a double carbon coating by hydrothermal reaction and calcination, which effectively improves the structural stability and promotes electron transport. The composite material of TiO2/rGO@NC delivers the first charge specific capacity of 245.8 mA h g(-1) at 0.02 A g(-1), along with 118.7 and 91.7 mA h g(-1) at high current densities of 2.5 and 5 A g(-1). Simultaneously, it can still offer 135.8 mA h g(-1) over 500 cycles at the current density of 1 A g(-1). The remarkable electrochemical performance, combining with its own properties, demonstrates that it can be used as a hopeful anode material for superior performance SIBs.
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