Liquid gallium electrode confined in porous carbon matrix as anode for lithium secondary batteries

Kyu T. Lee; Yoon S. Jung; Taeahn Kim; Chang H. Kim; Jun H. Kim; Ji Y. Kwon; Seung M. Oh

doi:10.1149/1.2823262

Liquid gallium electrode confined in porous carbon matrix as anode for lithium secondary batteries

Kyu T. Lee, Yoon S. Jung, Taeahn Kim, Chang H. Kim, Jun H. Kim, Ji Y. Kwon, Seung M. Oh

Department of Chemical and Biomolecular Engineering

Research output: Contribution to journal › Article › peer-review

41 Citations (Scopus)

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 Ga2 O3 powder surface, which was followed by carbothermal reduction of Ga2 O3 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 Lix Ga (0<x2) phase transitions, are self-healed by cohesion between liquid Ga droplets.

Original language	English
Pages (from-to)	A21-A24
Journal	Electrochemical and Solid-State Letters
Volume	11
Issue number	3
DOIs	https://doi.org/10.1149/1.2823262
Publication status	Published - 2008

All Science Journal Classification (ASJC) codes

Chemical Engineering(all)
Materials Science(all)
Physical and Theoretical Chemistry
Electrochemistry
Electrical and Electronic Engineering

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10.1149/1.2823262

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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 Ga2 O3 powder surface, which was followed by carbothermal reduction of Ga2 O3 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 Lix Ga (0",

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AU - Lee, Kyu T.

AU - Jung, Yoon S.

AU - Kim, Taeahn

AU - Kim, Chang H.

AU - Kim, Jun H.

AU - Kwon, Ji Y.

AU - Oh, Seung M.

PY - 2008

Y1 - 2008

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AB - A liquid gallium electrode confined in a porous carbon matrix was prepared by vaporization and pyrolysis of Ga(III)-phthalocyanine chloride on a nanosized Ga2 O3 powder surface, which was followed by carbothermal reduction of Ga2 O3 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 Lix Ga (0

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Liquid gallium electrode confined in porous carbon matrix as anode for lithium secondary batteries

Abstract

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