Abstract
α-MnO2 nanowires were synthesized by a hydrothermal method and then mixed with agglomerated sulfur powders. Homogeneous α-MnO2-coated sulfur particles were obtained by utilizing heat treatment intended to melt and recrystallize the sulfur. α-MnO2 nanowires lead to the suppression in re-agglomeration of sulfur powders during heat treatment and result in successful coating as well as decreased size in parent sulfur powders. The α-MnO2-coated sulfur particles were used as the cathode material for lithium-ion battery applications. Electrochemical evaluation such as the rate capability characteristics and impedance study indicates that the α-MnO2 coated sulfur cathode shows lower resistance and improved rate capability compared to a pristine sulfur cathode.
Original language | English |
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Pages (from-to) | 132-135 |
Number of pages | 4 |
Journal | Materials Letters |
Volume | 158 |
DOIs | |
Publication status | Published - 11 Jun 2015 |
Keywords
- Lithium-sulfur battery
- Metallic oxide
- Sulfur
ASJC Scopus subject areas
- General Materials Science
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering