Lithium intercalated graphite with preformed passivation layer as superior anode for Lithium ion batteries

Sukyoung Choi; Gyujin Jung; Jong Eun Kim; Tae Young Kim; Kwang S. Suh

doi:10.1016/j.apsusc.2018.05.229

Lithium intercalated graphite with preformed passivation layer as superior anode for Lithium ion batteries

Sukyoung Choi, Gyujin Jung, Jong Eun Kim, Tae Young Kim, Kwang S. Suh

Department of Materials Science and Engineering

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

17 Citations (Scopus)

Abstract

Graphite has been the most common anode materials in the Li-ion batteries (LIBs). However, it has a limited Coulombic efficiency and cycling stability which are crucial for the practical use of LIBs. Here, we present a lithium (Li)-intercalated graphite (LIG) electrode with a stable passivating layer on the surface for an improved electrochemical performance. The LIG was prepared by thermal treatment of commercial graphite in the presence of Li metal vapor and subsequent exposure to air. Characterization revealed that the surface of LIG was passivated by a thin inorganic compound (Li ₂ CO ₃ ). This passivation layer on the graphite surface function as a preformed stable solid electrolyte interphase (SEI) films and allows the graphite electrode to deliver a high reversible capacity, high Coulombic efficiency, and stable cycle life.

Original language	English
Pages (from-to)	367-372
Number of pages	6
Journal	Applied Surface Science
Volume	455
DOIs	https://doi.org/10.1016/j.apsusc.2018.05.229
Publication status	Published - 2018 Oct 15

Keywords

Graphite anode
Li pre-charging
Li-ion battery
Passivating layer
Solid electrolyte interphase

ASJC Scopus subject areas

Chemistry(all)
Condensed Matter Physics
Physics and Astronomy(all)
Surfaces and Interfaces
Surfaces, Coatings and Films

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.apsusc.2018.05.229

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title = "Lithium intercalated graphite with preformed passivation layer as superior anode for Lithium ion batteries",

abstract = " Graphite has been the most common anode materials in the Li-ion batteries (LIBs). However, it has a limited Coulombic efficiency and cycling stability which are crucial for the practical use of LIBs. Here, we present a lithium (Li)-intercalated graphite (LIG) electrode with a stable passivating layer on the surface for an improved electrochemical performance. The LIG was prepared by thermal treatment of commercial graphite in the presence of Li metal vapor and subsequent exposure to air. Characterization revealed that the surface of LIG was passivated by a thin inorganic compound (Li 2 CO 3 ). This passivation layer on the graphite surface function as a preformed stable solid electrolyte interphase (SEI) films and allows the graphite electrode to deliver a high reversible capacity, high Coulombic efficiency, and stable cycle life. ",

keywords = "Graphite anode, Li pre-charging, Li-ion battery, Passivating layer, Solid electrolyte interphase",

author = "Sukyoung Choi and Gyujin Jung and Kim, {Jong Eun} and Kim, {Tae Young} and Suh, {Kwang S.}",

note = "Funding Information: This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (NRF- 2016R1D1A1B01008736 ). This work was also supported by the Gachon University research fund of 2016. (GCU- 2016-0217 ) Publisher Copyright: {\textcopyright} 2018",

year = "2018",

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doi = "10.1016/j.apsusc.2018.05.229",

language = "English",

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journal = "Applied Surface Science",

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AU - Choi, Sukyoung

AU - Jung, Gyujin

AU - Kim, Jong Eun

AU - Kim, Tae Young

AU - Suh, Kwang S.

N1 - Funding Information: This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (NRF- 2016R1D1A1B01008736 ). This work was also supported by the Gachon University research fund of 2016. (GCU- 2016-0217 ) Publisher Copyright: © 2018

PY - 2018/10/15

Y1 - 2018/10/15

N2 - Graphite has been the most common anode materials in the Li-ion batteries (LIBs). However, it has a limited Coulombic efficiency and cycling stability which are crucial for the practical use of LIBs. Here, we present a lithium (Li)-intercalated graphite (LIG) electrode with a stable passivating layer on the surface for an improved electrochemical performance. The LIG was prepared by thermal treatment of commercial graphite in the presence of Li metal vapor and subsequent exposure to air. Characterization revealed that the surface of LIG was passivated by a thin inorganic compound (Li 2 CO 3 ). This passivation layer on the graphite surface function as a preformed stable solid electrolyte interphase (SEI) films and allows the graphite electrode to deliver a high reversible capacity, high Coulombic efficiency, and stable cycle life.

AB - Graphite has been the most common anode materials in the Li-ion batteries (LIBs). However, it has a limited Coulombic efficiency and cycling stability which are crucial for the practical use of LIBs. Here, we present a lithium (Li)-intercalated graphite (LIG) electrode with a stable passivating layer on the surface for an improved electrochemical performance. The LIG was prepared by thermal treatment of commercial graphite in the presence of Li metal vapor and subsequent exposure to air. Characterization revealed that the surface of LIG was passivated by a thin inorganic compound (Li 2 CO 3 ). This passivation layer on the graphite surface function as a preformed stable solid electrolyte interphase (SEI) films and allows the graphite electrode to deliver a high reversible capacity, high Coulombic efficiency, and stable cycle life.

KW - Graphite anode

KW - Li pre-charging

KW - Li-ion battery

KW - Passivating layer

KW - Solid electrolyte interphase

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U2 - 10.1016/j.apsusc.2018.05.229

DO - 10.1016/j.apsusc.2018.05.229

M3 - Article

AN - SCOPUS:85048512310

SN - 0169-4332

VL - 455

SP - 367

EP - 372

JO - Applied Surface Science

JF - Applied Surface Science

ER -

Lithium intercalated graphite with preformed passivation layer as superior anode for Lithium ion batteries

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

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