Evolution of solid electrolyte interphase during cycling and its effect on electrochemical properties of LiMn2O4

Jintae Hwang, Ho Jang

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Thickness variation of the solid electrolyte interphase (SEI) produced during charge-discharge cycling is investigated to analyze the effect of SEI on the electrochemical properties of LiMn2O4. Atomic force microscopy (AFM) is used to measure the SEI thickness and elastic modulus on the LiMn2O4 surface. The SEI shows a broad thickness distribution due to the random nature of the LiMn2O4 electrode surfaces, while the average SEI thickness increases with cycling and stabilizes after the 20th cycle. Formation of a relatively thin SEI on the LiMn2O4 surface accompanies low Coulombic efficiency at early cycling stages. The SEI produced in the early stages of cycling is vulnerable to capacity fading due to inefficient surface protection against possible side reactions. A fully-grown stable SEI after 20 cycles shields the cathode surface from the electrolyte, minimizing capacity fading.

Original languageEnglish
Pages (from-to)A103-A107
JournalJournal of the Electrochemical Society
Volume162
Issue number1
DOIs
Publication statusPublished - 2015

Fingerprint

Solid electrolytes
solid electrolytes
Electrochemical properties
cycles
fading
lithium manganese oxide
Electrolytes
Atomic force microscopy
modulus of elasticity
Cathodes
Elastic moduli
cathodes
atomic force microscopy
electrolytes
Electrodes
electrodes

ASJC Scopus subject areas

  • Electrochemistry
  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry
  • Surfaces, Coatings and Films
  • Renewable Energy, Sustainability and the Environment
  • Condensed Matter Physics

Cite this

Evolution of solid electrolyte interphase during cycling and its effect on electrochemical properties of LiMn2O4 . / Hwang, Jintae; Jang, Ho.

In: Journal of the Electrochemical Society, Vol. 162, No. 1, 2015, p. A103-A107.

Research output: Contribution to journalArticle

@article{c80a334c3f194e3eae3d66ed85a4da99,
title = "Evolution of solid electrolyte interphase during cycling and its effect on electrochemical properties of LiMn2O4",
abstract = "Thickness variation of the solid electrolyte interphase (SEI) produced during charge-discharge cycling is investigated to analyze the effect of SEI on the electrochemical properties of LiMn2O4. Atomic force microscopy (AFM) is used to measure the SEI thickness and elastic modulus on the LiMn2O4 surface. The SEI shows a broad thickness distribution due to the random nature of the LiMn2O4 electrode surfaces, while the average SEI thickness increases with cycling and stabilizes after the 20th cycle. Formation of a relatively thin SEI on the LiMn2O4 surface accompanies low Coulombic efficiency at early cycling stages. The SEI produced in the early stages of cycling is vulnerable to capacity fading due to inefficient surface protection against possible side reactions. A fully-grown stable SEI after 20 cycles shields the cathode surface from the electrolyte, minimizing capacity fading.",
author = "Jintae Hwang and Ho Jang",
year = "2015",
doi = "10.1149/2.0601501jes",
language = "English",
volume = "162",
pages = "A103--A107",
journal = "Journal of the Electrochemical Society",
issn = "0013-4651",
publisher = "Electrochemical Society, Inc.",
number = "1",

}

TY - JOUR

T1 - Evolution of solid electrolyte interphase during cycling and its effect on electrochemical properties of LiMn2O4

AU - Hwang, Jintae

AU - Jang, Ho

PY - 2015

Y1 - 2015

N2 - Thickness variation of the solid electrolyte interphase (SEI) produced during charge-discharge cycling is investigated to analyze the effect of SEI on the electrochemical properties of LiMn2O4. Atomic force microscopy (AFM) is used to measure the SEI thickness and elastic modulus on the LiMn2O4 surface. The SEI shows a broad thickness distribution due to the random nature of the LiMn2O4 electrode surfaces, while the average SEI thickness increases with cycling and stabilizes after the 20th cycle. Formation of a relatively thin SEI on the LiMn2O4 surface accompanies low Coulombic efficiency at early cycling stages. The SEI produced in the early stages of cycling is vulnerable to capacity fading due to inefficient surface protection against possible side reactions. A fully-grown stable SEI after 20 cycles shields the cathode surface from the electrolyte, minimizing capacity fading.

AB - Thickness variation of the solid electrolyte interphase (SEI) produced during charge-discharge cycling is investigated to analyze the effect of SEI on the electrochemical properties of LiMn2O4. Atomic force microscopy (AFM) is used to measure the SEI thickness and elastic modulus on the LiMn2O4 surface. The SEI shows a broad thickness distribution due to the random nature of the LiMn2O4 electrode surfaces, while the average SEI thickness increases with cycling and stabilizes after the 20th cycle. Formation of a relatively thin SEI on the LiMn2O4 surface accompanies low Coulombic efficiency at early cycling stages. The SEI produced in the early stages of cycling is vulnerable to capacity fading due to inefficient surface protection against possible side reactions. A fully-grown stable SEI after 20 cycles shields the cathode surface from the electrolyte, minimizing capacity fading.

UR - http://www.scopus.com/inward/record.url?scp=84923780711&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84923780711&partnerID=8YFLogxK

U2 - 10.1149/2.0601501jes

DO - 10.1149/2.0601501jes

M3 - Article

AN - SCOPUS:84923780711

VL - 162

SP - A103-A107

JO - Journal of the Electrochemical Society

JF - Journal of the Electrochemical Society

SN - 0013-4651

IS - 1

ER -