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Title: The Anode Challenge for Lithium-Ion Batteries: A Mechanochemically Synthesized Sn-Fe-C Composite Anode Surpasses Graphitic Carbon

Carbon-based anodes are the key limiting factor in increasing the volumetric capacity of lithium-ion batteries. Tin-based composites are one alternative approach. Nanosized Sn–Fe–C anode materials are mechanochemically synthesized by reducing SnO with Ti in the presence of carbon. The optimum synthesis conditions are found to be 1:0.25:10 for initial ratio of SnO, Ti, and graphite with a total grinding time of 8 h. This optimized composite shows excellent extended cycling at the C/10 rate, delivering a first charge capacity as high as 740 mAh g–1 and 60% of which still remained after 170 cycles. The calculated volumetric capacity significantly exceeds that of carbon. In conclusion, it also exhibits excellent rate capability, delivering volumetric capacity higher than 1.6 Ah cc–1 over 140 cycles at the 1 C rate.
Authors:
 [1] ;  [1] ;  [2] ;  [1] ;  [3] ;  [1] ;  [1] ;  [4]
  1. Materials Science and Engineering, State University of New York at Binghamton, Binghamton NY 13902-6000 USA
  2. Department of Chemistry, State University of New York at Binghamton, Binghamton NY 13902-6000 USA
  3. Materials Science and Engineering, State University of New York at Binghamton, Binghamton NY 13902-6000 USA; Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton NY 11973 USA
  4. Materials Science and Engineering, State University of New York at Binghamton, Binghamton NY 13902-6000 USA; Department of Chemistry, State University of New York at Binghamton, Binghamton NY 13902-6000 USA
Publication Date:
OSTI Identifier:
1310491
Grant/Contract Number:
EE0006852; SC0012704; AC02-98CH10886
Type:
Accepted Manuscript
Journal Name:
Advanced Science
Additional Journal Information:
Journal Volume: 3; Journal Issue: 4; Journal ID: ISSN 2198-3844
Publisher:
Wiley
Research Org:
State Univ. of New York, Binghamton, NY (United States)
Sponsoring Org:
USDOE Office of Energy Efficiency and Renewable Energy (EERE); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE