Abstract
Mesoporous Sn/SnO2/carbon composites with uniformly Sn/SnO 2 embedded within the carbon pore walls have been rationally designed and synthesized. These nanocomposites have been characterized by XRD, SEM, TEM, XPS and tested as negative electrodes in a cell using lithium foil as the counter electrode. The inclusion of metallic Sn in SnO2/CMK-3 resulted in a unique, ordered structure and provided a synergistic effect which resulted in an impressive initial reversible capacity of 799 mAh g-1. In addition, at a higher current of 800 mA g-1, the heterostructure was able to provide a stable capacity of 350 mAh g-1. Furthermore, a retention capacity of ∼670 mAh g-1 was obtained after 60 cycles.
Original language | English |
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Pages (from-to) | 844-852 |
Number of pages | 9 |
Journal | Electrochimica Acta |
Volume | 87 |
DOIs | |
Publication status | Published - Jan 1 2013 |
Externally published | Yes |
Keywords
- Composites
- Lithium ion battery
- Mesoporous carbon
- Negative electrode
- Tin and tin oxides
ASJC Scopus subject areas
- Chemical Engineering(all)
- Electrochemistry