Silicon/Carbon Composites as Anode Materials for Li-Ion Batteries
- 1 January 2004
- journal article
- Published by The Electrochemical Society in Electrochemical and Solid-State Letters
- Vol. 7 (10) , A369-A372
- https://doi.org/10.1149/1.1795031
Abstract
A silicon/carbon composite has been synthesized by two poly(vinyl chloride) (PVC) pyrolysis reactions, combined with an intervening high-energy mechanical milling (HEMM) step. As lithium storage host, the composite demonstrates high initial coulombic efficiency of 82% and a large capacity at ca. 900 mAh g−1 over 40 cycles. Controlling Li-insertion level at 600 mAh g−1 can greatly extend the cycles to over 100. Another composite prepared by ballmilling a mixture of graphite and silicon and followed by a PVC pyrolysis process also shows both good capacity and capacity retention. © 2004 The Electrochemical Society. All rights reserved.Keywords
This publication has 15 references indexed in Scilit:
- The formation and properties of amorphous silicon as negative electrode reactant in lithium systemsJournal of Power Sources, 2003
- Carbon-coated silicon as anode material for lithium ion batteries: advantages and limitationsElectrochimica Acta, 2003
- Characterization of carbon-coated silicon: Structural evolution and possible limitationsJournal of Power Sources, 2003
- Structural studies of the new carbon-coated silicon anode materials using synchrotron-based in situ XRDElectrochemistry Communications, 2002
- SiOx-based anodes for secondary lithium batteriesSolid State Ionics, 2002
- The crystal structural evolution of nano-Si anode caused by lithium insertion and extraction at room temperatureSolid State Ionics, 2000
- The Insertion Mechanism of Lithium into Mg2Si Anode Material for Li‐Ion BatteriesJournal of the Electrochemical Society, 1999
- Si/TiN Nanocomposites Novel Anode Materials for Li-Ion BatteriesElectrochemical and Solid-State Letters, 1999
- Pyrolysed silicon-containing polymers as high capacity anodes for lithium-ion batteriesJournal of Power Sources, 1997
- Pyrolyzed Polysiloxanes for Use as Anode Materials in Lithium‐Ion BatteriesJournal of the Electrochemical Society, 1997