Journal
ELECTROCHEMISTRY COMMUNICATIONS
Volume 13, Issue 2, Pages 158-161Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.elecom.2010.12.001
Keywords
Lithium battery; Anode; Aluminum
Categories
Funding
- U.S. DOE
- EERE [DE-AC02-05CH11231]
- BATT Program [6807148]
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Al-Si-graphite composite with low 7.9 wt.% Si was synthesized by ball-milling eutectic Al-Si powder and graphite. Its reversible capacity remained above 0.65 Ah/g after 10 cycles, corresponding to 1.6 Ah/cm(3), almost double that of graphite alone. Ex-situ XRD indicates that in Al-graphite the large volume change during lithium insertion/removal causes the active material to become isolated and not available for electrochemical reactions, while in Al-Si-graphite all the material remains available. (C) 2010 Elsevier B.V. All rights reserved.
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