Insights into Solid-Electrolyte Interphase Induced Li-Ion Degradation from in Situ Auger Electron Spectroscopy

Ching Yen Tang; Yonghui Ma; Richard T. Haasch; Jia Hu Ouyang; Shen J. Dillon

doi:10.1021/acs.jpclett.7b02847

Insights into Solid-Electrolyte Interphase Induced Li-Ion Degradation from in Situ Auger Electron Spectroscopy

Ching Yen Tang
, Yonghui Ma
, Richard T. Haasch
, Jia Hu Ouyang
, Shen J. Dillon^*

^*Corresponding author for this work

University of Illinois at Urbana-Champaign
Harbin Institute of Technology

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

20 Scopus citations

Abstract

Surface reactions occurring on LiMn₂O₄, LiCoO₂, LiNiO₂, Li[Ni_1/3Mn_1/3Co_1/3]O₂, and LiFePO₄ during charging and overcharging are studied by in situ and ex situ Auger electron spectroscopy. Carbon surface stability at the cathode solid-electrolyte interphase (SEI), associated with carbonate formation, decomposition, and CO/CO₂ evolution, on different electrodes during cycling correlates with their cycle life. To understand how associated CO and CO₂ evolution affects cycle stability, LiMn₂O₄ is cycled in flowing gas. Flowing Ar enhances cycle life by a factor of 2, while flowing Ar with 1% CO₂ reduces cycle life by a factor of 2. CO₂ is proposed to degrade cycle life by trapping Li and metal ions as carbonate in the anode SEI.

Original language	English
Pages (from-to)	6226-6230
Number of pages	5
Journal	Journal of Physical Chemistry Letters
Volume	8
Issue number	24
DOIs	https://doi.org/10.1021/acs.jpclett.7b02847
State	Published - 21 Dec 2017
Externally published	Yes

Access to Document

10.1021/acs.jpclett.7b02847

Cite this

@article{94f28f50976642ee916021de3773ce40,

title = "Insights into Solid-Electrolyte Interphase Induced Li-Ion Degradation from in Situ Auger Electron Spectroscopy",

abstract = "Surface reactions occurring on LiMn2O4, LiCoO2, LiNiO2, Li[Ni1/3Mn1/3Co1/3]O2, and LiFePO4 during charging and overcharging are studied by in situ and ex situ Auger electron spectroscopy. Carbon surface stability at the cathode solid-electrolyte interphase (SEI), associated with carbonate formation, decomposition, and CO/CO2 evolution, on different electrodes during cycling correlates with their cycle life. To understand how associated CO and CO2 evolution affects cycle stability, LiMn2O4 is cycled in flowing gas. Flowing Ar enhances cycle life by a factor of 2, while flowing Ar with 1\% CO2 reduces cycle life by a factor of 2. CO2 is proposed to degrade cycle life by trapping Li and metal ions as carbonate in the anode SEI.",

author = "Tang, \{Ching Yen\} and Yonghui Ma and Haasch, \{Richard T.\} and Ouyang, \{Jia Hu\} and Dillon, \{Shen J.\}",

note = "Publisher Copyright: {\textcopyright} 2017 American Chemical Society.",

year = "2017",

month = dec,

day = "21",

doi = "10.1021/acs.jpclett.7b02847",

language = "英语",

volume = "8",

pages = "6226--6230",

journal = "Journal of Physical Chemistry Letters",

issn = "1948-7185",

publisher = "American Chemical Society",

number = "24",

}

TY - JOUR

T1 - Insights into Solid-Electrolyte Interphase Induced Li-Ion Degradation from in Situ Auger Electron Spectroscopy

AU - Tang, Ching Yen

AU - Ma, Yonghui

AU - Haasch, Richard T.

AU - Ouyang, Jia Hu

AU - Dillon, Shen J.

PY - 2017/12/21

Y1 - 2017/12/21

N2 - Surface reactions occurring on LiMn2O4, LiCoO2, LiNiO2, Li[Ni1/3Mn1/3Co1/3]O2, and LiFePO4 during charging and overcharging are studied by in situ and ex situ Auger electron spectroscopy. Carbon surface stability at the cathode solid-electrolyte interphase (SEI), associated with carbonate formation, decomposition, and CO/CO2 evolution, on different electrodes during cycling correlates with their cycle life. To understand how associated CO and CO2 evolution affects cycle stability, LiMn2O4 is cycled in flowing gas. Flowing Ar enhances cycle life by a factor of 2, while flowing Ar with 1% CO2 reduces cycle life by a factor of 2. CO2 is proposed to degrade cycle life by trapping Li and metal ions as carbonate in the anode SEI.

AB - Surface reactions occurring on LiMn2O4, LiCoO2, LiNiO2, Li[Ni1/3Mn1/3Co1/3]O2, and LiFePO4 during charging and overcharging are studied by in situ and ex situ Auger electron spectroscopy. Carbon surface stability at the cathode solid-electrolyte interphase (SEI), associated with carbonate formation, decomposition, and CO/CO2 evolution, on different electrodes during cycling correlates with their cycle life. To understand how associated CO and CO2 evolution affects cycle stability, LiMn2O4 is cycled in flowing gas. Flowing Ar enhances cycle life by a factor of 2, while flowing Ar with 1% CO2 reduces cycle life by a factor of 2. CO2 is proposed to degrade cycle life by trapping Li and metal ions as carbonate in the anode SEI.

UR - https://www.scopus.com/pages/publications/85039070672

U2 - 10.1021/acs.jpclett.7b02847

DO - 10.1021/acs.jpclett.7b02847

M3 - 文章

C2 - 29232136

AN - SCOPUS:85039070672

SN - 1948-7185

VL - 8

SP - 6226

EP - 6230

JO - Journal of Physical Chemistry Letters

JF - Journal of Physical Chemistry Letters

IS - 24

ER -

Insights into Solid-Electrolyte Interphase Induced Li-Ion Degradation from in Situ Auger Electron Spectroscopy

Abstract

Access to Document

Other files and links

Fingerprint

Cite this