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Facile synthesis of porous Mn2O3/TiO2 microspheres as anode materials for lithium-ion batteries with enhanced electrochemical performance.
- Source :
- Journal of Materials Science: Materials in Electronics; Sep2018, Vol. 29 Issue 18, p16064-16073, 10p
- Publication Year :
- 2018
-
Abstract
- In this study, the porous Mn<subscript>2</subscript>O<subscript>3</subscript>/TiO<subscript>2</subscript> microspheres were prepared via a facile two-step hydrothermal method. Firstly, the Mn<subscript>2</subscript>O<subscript>3</subscript> particles were obtained by the calcination of hydrothermal-synthesized MnCO<subscript>3</subscript>. Then the TiO<subscript>2</subscript> layer was coated on the surface of the Mn<subscript>2</subscript>O<subscript>3</subscript> particles by a hydrothermal-assisted liquid phase deposition (HA-LPD) method. The as-prepared samples were analyzed by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscope (SEM), transmission electron microscope (TEM) and Brunauer-Emmett-Teller analyzer (BET), respectively. Moreover, the electrochemical performances of Mn<subscript>2</subscript>O<subscript>3</subscript>/TiO<subscript>2</subscript> as an anode material in lithium ion batteries (LIBs) were also evaluated. The results indicated that, the specific capability of the Mn<subscript>2</subscript>O<subscript>3</subscript>/TiO<subscript>2</subscript> composite material was about 452 mAh g<superscript>−1</superscript> at the current density of 500 mA g<superscript>−1</superscript> after 200 cycles, which was much higher than that of pristine Mn<subscript>2</subscript>O<subscript>3</subscript> (313 mAh g<superscript>−1</superscript>). Meanwhile, the rate capacity of Mn<subscript>2</subscript>O<subscript>3</subscript>/TiO<subscript>2</subscript> was 177 mAh g<superscript>−1</superscript> at the current density of 4 A g<superscript>−1</superscript>, which was also higher than that of pure Mn<subscript>2</subscript>O<subscript>3</subscript> (3 mAh g<superscript>−1</superscript>). Moreover, the Mn<subscript>2</subscript>O<subscript>3</subscript>/TiO<subscript>2</subscript> composite material can still yield a specific capacity of 800 mAh g<superscript>− 1</superscript> at the current density of 1 A g<superscript>−1</superscript> after 1000 cycles. The enhanced electrochemical performances of Mn<subscript>2</subscript>O<subscript>3</subscript>/TiO<subscript>2</subscript> composite material was mainly attributed to the synergistic effect between the Mn<subscript>2</subscript>O<subscript>3</subscript> with high capacity and TiO<subscript>2</subscript> with superior stability. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09574522
- Volume :
- 29
- Issue :
- 18
- Database :
- Complementary Index
- Journal :
- Journal of Materials Science: Materials in Electronics
- Publication Type :
- Academic Journal
- Accession number :
- 131578674
- Full Text :
- https://doi.org/10.1007/s10854-018-9695-7