Tris(pentafluorophenyl) borane as an electrolyte additive for high performance silicon thin film electrodes in lithium ion batteries

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We report tris(pentafluorophenyl) borane (TPFPB) as a novel electrolyte additive for silicon (Si) thin film anodes in lithium ion batteries. The introduction of TPFPB into the electrolyte consisting of 1 M lithium perchlorate (LiClO(4)) in ethylene carbonate (EC)/diethyl carbonate (DEC) (1/1 volume) significantly enhances the capacity retention and coulombic efficiency. Specifically, TPFPB enables the improved properties by forming stable solid-electrolyte interphase (SEI) layers and suppressing surface pulverization. The SEI layers are thoroughly characterized by a variety of analytical tools including scanning electron microscopy (SEM), electrochemical impedance spectroscopy (EIS), and X-ray photoelectron spectroscopy (X PS). (C) 2011 Elsevier Ltd. All rights reserved.
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Issue Date
2011-10
Language
English
Article Type
Article
Keywords

ETHYLENE CARBONATE; ANION RECEPTORS; SI; ANODE; SURFACE; CONDUCTIVITY; INTERPHASE; GRAPHITE

Citation

ELECTROCHIMICA ACTA, v.56, no.24, pp.8997 - 9003

ISSN
0013-4686
URI
http://hdl.handle.net/10203/96244
Appears in Collection
EEW-Journal Papers(저널논문)CBE-Journal Papers(저널논문)
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