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Liquid Gallium Electrode Confined in Porous Carbon Matrix as Anode for Lithium Secondary Batteries

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Authors
Lee, Kyu T.; Jung, Yoon S.; Kim, Taeahn; Kim, Chang H.; Kim, Jun H.; Kwon, Ji Y.; Oh, Seung M.
Issue Date
2007-12-26
Publisher
Electrochemical Society
Citation
Electrochem. Solid-State Lett., 11, A21 (2008)
Keywords
anodesgalliumpyrolysissecondary cellssolid-state phase transformations
Abstract
A liquid gallium electrode confined in a porous carbon matrix was prepared by vaporization and pyrolysis of Ga(III)-
phthalocyanine chloride on a nanosized Ga2O3 powder surface, which was followed by carbothermal reduction of Ga2O3 by a
carbon matrix. When the electrode was charge/discharge cycled, the liquid Ga component was restored to its original liquid state
at the final stage of delithiation, such that any electrode failure modes, for instance, crack formation and electric disconnection that
are caused by severe volume change associated with multistage, solid-state LixGa (0 < x ≤ 2) phase transitions, are self-healed
by cohesion between liquid Ga droplets.
ISSN
1099-0062
Language
English
URI
http://hdl.handle.net/10371/5927
DOI
https://doi.org/10.1149/1.2823262
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College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Chemical and Biological Engineering (화학생물공학부)Journal Papers (저널논문_화학생물공학부)
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