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Coaxially Integrating TiO2/MoO3 into Carbon Nanofibers via Electrospinning towards Enhanced Lithium Ion Storage Performance.
- Source :
- ChemistrySelect; 3/20/2020, Vol. 5 Issue 11, p3225-3233, 9p
- Publication Year :
- 2020
-
Abstract
- Conversion‐type transition metal oxide MoO3 has attracted considerable interest as a promising anode material for lithium ion batteries (LIBs), but it suffers from the low electronic conductivity and the large volume changes upon lithiation/delithiation. To overcome these drawbacks, we herein report the full encapsulation of core‐shelled MoO3‐TiO2 into the carbon nanofibers (CNFs) via a facile coaxial electrospinning followed by a two‐step annealing process. TiO2 shells and MoO3 cores were coaxially integrated into the porous CNFs (denote the composite as TiO2/MoO3@CNFs). The two‐step annealing strategy (carbonization in Ar and then oxidization in air) allows the readily encapsulation of MoO3 into CNFs. When applied as anode materials for LIBs, the coaxial TiO2/MoO3@CNFs demonstrate superior lithium storage performance, delivering a high reversible capacity of 561 mAh/g after 300 cycles at 1000 mA/g with a much higher capacity retention of 70.8% than that of the MoO3@CNFs without TiO2 layers (only 42.3%). The results clearly demonstrate that the CNFs matrices and the TiO2 shells together efficiently enhance the electrode conductivity and buffer the volume changes of MoO3 upon cycling. [ABSTRACT FROM AUTHOR]
- Subjects :
- TRANSITION metal oxides
LITHIUM ions
ELECTROSPINNING
LITHIUM-ion batteries
Subjects
Details
- Language :
- English
- ISSN :
- 23656549
- Volume :
- 5
- Issue :
- 11
- Database :
- Complementary Index
- Journal :
- ChemistrySelect
- Publication Type :
- Academic Journal
- Accession number :
- 142357818
- Full Text :
- https://doi.org/10.1002/slct.202000288