Role of the solid electrolyte interphase on a Li metal anode in a dimethylsulfoxide-based electrolyte for a lithium-oxygen battery

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

The effect of the solid electrolyte interphase (SEI) on a Li anode on the charge-discharge cycling performance in 1 M LiTFSI/dimethylsulfoxide electrolyte solution is examined by using charge-discharge cycling. The chemical structure of the surface and interior of the SEI strongly affects the cycling performance of the anode. The observed coulombic efficiency is low (<45%) when organic compounds such as lithium alkyl carbonates and polycarbonate form predominantly on the surface and interior. However, when inorganic compounds such as Li<inf>2</inf>CO<inf>3</inf>, Li<inf>2</inf>O, and LiF form instead, the coulombic efficiency increases to >85%. This enhanced efficiency remains constant regardless of the O<inf>2</inf> content and despite <1000 ppm concentration of the contaminant H<inf>2</inf>O in the electrolyte. Thus, the lithium surface should be protected by inorganic compounds prior to cycling to prevent it from undergoing side reactions with the electrolyte during cycling in the electrolyte.

Original languageEnglish
Pages (from-to)588-592
Number of pages5
JournalJournal of Power Sources
Volume294
DOIs
Publication statusPublished - 2015 Jul 6

Fingerprint

Solid electrolytes
solid electrolytes
Dimethyl Sulfoxide
Lithium
Electrolytes
electric batteries
Anodes
anodes
lithium
Metals
electrolytes
Oxygen
cycles
oxygen
metals
Inorganic compounds
inorganic compounds
Discharge (fluid mechanics)

Keywords

  • Dimethylsulfoxide
  • Inorganic layer
  • Li metal anode
  • Organic layer
  • SEI

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Energy Engineering and Power Technology
  • Renewable Energy, Sustainability and the Environment
  • Physical and Theoretical Chemistry

Cite this

@article{0f763320e2374907a6c9fb067fce1f23,
title = "Role of the solid electrolyte interphase on a Li metal anode in a dimethylsulfoxide-based electrolyte for a lithium-oxygen battery",
abstract = "The effect of the solid electrolyte interphase (SEI) on a Li anode on the charge-discharge cycling performance in 1 M LiTFSI/dimethylsulfoxide electrolyte solution is examined by using charge-discharge cycling. The chemical structure of the surface and interior of the SEI strongly affects the cycling performance of the anode. The observed coulombic efficiency is low (<45{\%}) when organic compounds such as lithium alkyl carbonates and polycarbonate form predominantly on the surface and interior. However, when inorganic compounds such as Li2CO3, Li2O, and LiF form instead, the coulombic efficiency increases to >85{\%}. This enhanced efficiency remains constant regardless of the O2 content and despite <1000 ppm concentration of the contaminant H2O in the electrolyte. Thus, the lithium surface should be protected by inorganic compounds prior to cycling to prevent it from undergoing side reactions with the electrolyte during cycling in the electrolyte.",
keywords = "Dimethylsulfoxide, Inorganic layer, Li metal anode, Organic layer, SEI",
author = "Norihiro Togasaki and Toshiyuki Momma and Tetsuya Osaka",
year = "2015",
month = "7",
day = "6",
doi = "10.1016/j.jpowsour.2015.06.092",
language = "English",
volume = "294",
pages = "588--592",
journal = "Journal of Power Sources",
issn = "0378-7753",
publisher = "Elsevier",

}

TY - JOUR

T1 - Role of the solid electrolyte interphase on a Li metal anode in a dimethylsulfoxide-based electrolyte for a lithium-oxygen battery

AU - Togasaki, Norihiro

AU - Momma, Toshiyuki

AU - Osaka, Tetsuya

PY - 2015/7/6

Y1 - 2015/7/6

N2 - The effect of the solid electrolyte interphase (SEI) on a Li anode on the charge-discharge cycling performance in 1 M LiTFSI/dimethylsulfoxide electrolyte solution is examined by using charge-discharge cycling. The chemical structure of the surface and interior of the SEI strongly affects the cycling performance of the anode. The observed coulombic efficiency is low (<45%) when organic compounds such as lithium alkyl carbonates and polycarbonate form predominantly on the surface and interior. However, when inorganic compounds such as Li2CO3, Li2O, and LiF form instead, the coulombic efficiency increases to >85%. This enhanced efficiency remains constant regardless of the O2 content and despite <1000 ppm concentration of the contaminant H2O in the electrolyte. Thus, the lithium surface should be protected by inorganic compounds prior to cycling to prevent it from undergoing side reactions with the electrolyte during cycling in the electrolyte.

AB - The effect of the solid electrolyte interphase (SEI) on a Li anode on the charge-discharge cycling performance in 1 M LiTFSI/dimethylsulfoxide electrolyte solution is examined by using charge-discharge cycling. The chemical structure of the surface and interior of the SEI strongly affects the cycling performance of the anode. The observed coulombic efficiency is low (<45%) when organic compounds such as lithium alkyl carbonates and polycarbonate form predominantly on the surface and interior. However, when inorganic compounds such as Li2CO3, Li2O, and LiF form instead, the coulombic efficiency increases to >85%. This enhanced efficiency remains constant regardless of the O2 content and despite <1000 ppm concentration of the contaminant H2O in the electrolyte. Thus, the lithium surface should be protected by inorganic compounds prior to cycling to prevent it from undergoing side reactions with the electrolyte during cycling in the electrolyte.

KW - Dimethylsulfoxide

KW - Inorganic layer

KW - Li metal anode

KW - Organic layer

KW - SEI

UR - http://www.scopus.com/inward/record.url?scp=84934784469&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84934784469&partnerID=8YFLogxK

U2 - 10.1016/j.jpowsour.2015.06.092

DO - 10.1016/j.jpowsour.2015.06.092

M3 - Article

VL - 294

SP - 588

EP - 592

JO - Journal of Power Sources

JF - Journal of Power Sources

SN - 0378-7753

ER -