Effect of Li2CO3 additive on gas generation in lithium-ion batteries

Jee Sun Shin, Chi Hwan Han, Un Ho Jung, Shung Ik Lee, Hyeong Jin Kim, Keon Kim

Research output: Contribution to journalArticle

104 Citations (Scopus)

Abstract

To elucidate the mechanism of gas generation during charge-discharge cycling of a lithium-ion cell, the generated gases and passive films on the carbon electrode are examined by means of gas chromatography (GC) and Fourier transform infrared (FTIR) spectroscopy. In ethyl carbonate/dimethyl carbonate and ethyl carbonate/diethyl carbonate 1 M LiPF6 electrolytes, the detected gaseous products are CO2, CO, CH4, C2H4, C2H6, etc. The FTIR spectrum of the surface of the carbon electrode shows bands which correspond to Li2CO3, ROCO2Li, (ROCO2Li)2, and RCO2Li. These results suggest that gas evolution is caused by electrode decomposition, reactive trace impurities, and electrolyte reduction. The surface of the electrode is composed of electrolyte reduction products. When 0.05 M Li2CO3 is added as an electrolyte additive, the total volume of generated gases is reduced, and the discharge capacity and the conductivity of lithium-ions are increased. These results can be explained by a more compact and thin 'solid electrolyte interface' film on the carbon electrode formed by Li2CO3, which effectively prevents solvent co-intercalation and carbon exfoliation.

Original languageEnglish
Pages (from-to)47-52
Number of pages6
JournalJournal of Power Sources
Volume109
Issue number1
DOIs
Publication statusPublished - 2002 Jun 15

Fingerprint

electric batteries
lithium
Gases
Electrolytes
Carbonates
carbonates
Carbon
Electrodes
electrodes
electrolytes
gases
carbon
ions
Lithium
Discharge (fluid mechanics)
Ions
gas evolution
Solid electrolytes
solid electrolytes
Carbon Monoxide

Keywords

  • Additives
  • Gas generation
  • Li-ion batteries
  • LiCO
  • SEI

ASJC Scopus subject areas

  • Electrochemistry
  • Fuel Technology
  • Materials Chemistry
  • Energy (miscellaneous)

Cite this

Effect of Li2CO3 additive on gas generation in lithium-ion batteries. / Shin, Jee Sun; Han, Chi Hwan; Jung, Un Ho; Lee, Shung Ik; Kim, Hyeong Jin; Kim, Keon.

In: Journal of Power Sources, Vol. 109, No. 1, 15.06.2002, p. 47-52.

Research output: Contribution to journalArticle

Shin, Jee Sun ; Han, Chi Hwan ; Jung, Un Ho ; Lee, Shung Ik ; Kim, Hyeong Jin ; Kim, Keon. / Effect of Li2CO3 additive on gas generation in lithium-ion batteries. In: Journal of Power Sources. 2002 ; Vol. 109, No. 1. pp. 47-52.
@article{cbaca359c9c6436aa3574993a2747f27,
title = "Effect of Li2CO3 additive on gas generation in lithium-ion batteries",
abstract = "To elucidate the mechanism of gas generation during charge-discharge cycling of a lithium-ion cell, the generated gases and passive films on the carbon electrode are examined by means of gas chromatography (GC) and Fourier transform infrared (FTIR) spectroscopy. In ethyl carbonate/dimethyl carbonate and ethyl carbonate/diethyl carbonate 1 M LiPF6 electrolytes, the detected gaseous products are CO2, CO, CH4, C2H4, C2H6, etc. The FTIR spectrum of the surface of the carbon electrode shows bands which correspond to Li2CO3, ROCO2Li, (ROCO2Li)2, and RCO2Li. These results suggest that gas evolution is caused by electrode decomposition, reactive trace impurities, and electrolyte reduction. The surface of the electrode is composed of electrolyte reduction products. When 0.05 M Li2CO3 is added as an electrolyte additive, the total volume of generated gases is reduced, and the discharge capacity and the conductivity of lithium-ions are increased. These results can be explained by a more compact and thin 'solid electrolyte interface' film on the carbon electrode formed by Li2CO3, which effectively prevents solvent co-intercalation and carbon exfoliation.",
keywords = "Additives, Gas generation, Li-ion batteries, LiCO, SEI",
author = "Shin, {Jee Sun} and Han, {Chi Hwan} and Jung, {Un Ho} and Lee, {Shung Ik} and Kim, {Hyeong Jin} and Keon Kim",
year = "2002",
month = "6",
day = "15",
doi = "10.1016/S0378-7753(02)00039-3",
language = "English",
volume = "109",
pages = "47--52",
journal = "Journal of Power Sources",
issn = "0378-7753",
publisher = "Elsevier",
number = "1",

}

TY - JOUR

T1 - Effect of Li2CO3 additive on gas generation in lithium-ion batteries

AU - Shin, Jee Sun

AU - Han, Chi Hwan

AU - Jung, Un Ho

AU - Lee, Shung Ik

AU - Kim, Hyeong Jin

AU - Kim, Keon

PY - 2002/6/15

Y1 - 2002/6/15

N2 - To elucidate the mechanism of gas generation during charge-discharge cycling of a lithium-ion cell, the generated gases and passive films on the carbon electrode are examined by means of gas chromatography (GC) and Fourier transform infrared (FTIR) spectroscopy. In ethyl carbonate/dimethyl carbonate and ethyl carbonate/diethyl carbonate 1 M LiPF6 electrolytes, the detected gaseous products are CO2, CO, CH4, C2H4, C2H6, etc. The FTIR spectrum of the surface of the carbon electrode shows bands which correspond to Li2CO3, ROCO2Li, (ROCO2Li)2, and RCO2Li. These results suggest that gas evolution is caused by electrode decomposition, reactive trace impurities, and electrolyte reduction. The surface of the electrode is composed of electrolyte reduction products. When 0.05 M Li2CO3 is added as an electrolyte additive, the total volume of generated gases is reduced, and the discharge capacity and the conductivity of lithium-ions are increased. These results can be explained by a more compact and thin 'solid electrolyte interface' film on the carbon electrode formed by Li2CO3, which effectively prevents solvent co-intercalation and carbon exfoliation.

AB - To elucidate the mechanism of gas generation during charge-discharge cycling of a lithium-ion cell, the generated gases and passive films on the carbon electrode are examined by means of gas chromatography (GC) and Fourier transform infrared (FTIR) spectroscopy. In ethyl carbonate/dimethyl carbonate and ethyl carbonate/diethyl carbonate 1 M LiPF6 electrolytes, the detected gaseous products are CO2, CO, CH4, C2H4, C2H6, etc. The FTIR spectrum of the surface of the carbon electrode shows bands which correspond to Li2CO3, ROCO2Li, (ROCO2Li)2, and RCO2Li. These results suggest that gas evolution is caused by electrode decomposition, reactive trace impurities, and electrolyte reduction. The surface of the electrode is composed of electrolyte reduction products. When 0.05 M Li2CO3 is added as an electrolyte additive, the total volume of generated gases is reduced, and the discharge capacity and the conductivity of lithium-ions are increased. These results can be explained by a more compact and thin 'solid electrolyte interface' film on the carbon electrode formed by Li2CO3, which effectively prevents solvent co-intercalation and carbon exfoliation.

KW - Additives

KW - Gas generation

KW - Li-ion batteries

KW - LiCO

KW - SEI

UR - http://www.scopus.com/inward/record.url?scp=0037097375&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0037097375&partnerID=8YFLogxK

U2 - 10.1016/S0378-7753(02)00039-3

DO - 10.1016/S0378-7753(02)00039-3

M3 - Article

AN - SCOPUS:0037097375

VL - 109

SP - 47

EP - 52

JO - Journal of Power Sources

JF - Journal of Power Sources

SN - 0378-7753

IS - 1

ER -