Conversion reaction of coo polycrystalline thin films exposed to atomic lithium

Ryan Thorpe, Sylvie Rangan, Mahsa Sina, Frederic Cosandey, Robert Bartynski

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

We have studied the reaction of 5 nm thick polycrystalline CoO films with atomic lithium as a model for the discharge of lithium-ion conversion battery electrodes. The electronic structure has been investigated with X-ray photoemission, ultraviolet photoemission, and inverse photoemission, while the morphology, crystal structure, and unoccupied states of the films have been examined with transmission electron microscopy. It is found that exposure to atomic lithium leads, at room temperature, to partial conversion with formation of Co and Li2O, but also of a Li2O2 or LiOH overlayer at the surface of the sample. As full conversion was obtained at 150 C, a comparison with room-temperature measurements enables the understanding of the kinetic limitations during lithiation.

Original languageEnglish (US)
Pages (from-to)14518-14525
Number of pages8
JournalJournal of Physical Chemistry C
Volume117
Issue number28
DOIs
StatePublished - Jul 18 2013

Fingerprint

Photoemission
Lithium
photoelectric emission
lithium
Thin films
thin films
room temperature
Temperature measurement
Electronic structure
temperature measurement
electric batteries
Crystal structure
Ions
electronic structure
Transmission electron microscopy
X rays
transmission electron microscopy
Electrodes
crystal structure
Kinetics

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Energy(all)
  • Surfaces, Coatings and Films
  • Physical and Theoretical Chemistry

Cite this

Thorpe, Ryan ; Rangan, Sylvie ; Sina, Mahsa ; Cosandey, Frederic ; Bartynski, Robert. / Conversion reaction of coo polycrystalline thin films exposed to atomic lithium. In: Journal of Physical Chemistry C. 2013 ; Vol. 117, No. 28. pp. 14518-14525.
@article{081a8f43db8c4a268ff9a2178387fcd8,
title = "Conversion reaction of coo polycrystalline thin films exposed to atomic lithium",
abstract = "We have studied the reaction of 5 nm thick polycrystalline CoO films with atomic lithium as a model for the discharge of lithium-ion conversion battery electrodes. The electronic structure has been investigated with X-ray photoemission, ultraviolet photoemission, and inverse photoemission, while the morphology, crystal structure, and unoccupied states of the films have been examined with transmission electron microscopy. It is found that exposure to atomic lithium leads, at room temperature, to partial conversion with formation of Co and Li2O, but also of a Li2O2 or LiOH overlayer at the surface of the sample. As full conversion was obtained at 150 C, a comparison with room-temperature measurements enables the understanding of the kinetic limitations during lithiation.",
author = "Ryan Thorpe and Sylvie Rangan and Mahsa Sina and Frederic Cosandey and Robert Bartynski",
year = "2013",
month = "7",
day = "18",
doi = "https://doi.org/10.1021/jp404875g",
language = "English (US)",
volume = "117",
pages = "14518--14525",
journal = "Journal of Physical Chemistry C",
issn = "1932-7447",
publisher = "American Chemical Society",
number = "28",

}

Conversion reaction of coo polycrystalline thin films exposed to atomic lithium. / Thorpe, Ryan; Rangan, Sylvie; Sina, Mahsa; Cosandey, Frederic; Bartynski, Robert.

In: Journal of Physical Chemistry C, Vol. 117, No. 28, 18.07.2013, p. 14518-14525.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Conversion reaction of coo polycrystalline thin films exposed to atomic lithium

AU - Thorpe, Ryan

AU - Rangan, Sylvie

AU - Sina, Mahsa

AU - Cosandey, Frederic

AU - Bartynski, Robert

PY - 2013/7/18

Y1 - 2013/7/18

N2 - We have studied the reaction of 5 nm thick polycrystalline CoO films with atomic lithium as a model for the discharge of lithium-ion conversion battery electrodes. The electronic structure has been investigated with X-ray photoemission, ultraviolet photoemission, and inverse photoemission, while the morphology, crystal structure, and unoccupied states of the films have been examined with transmission electron microscopy. It is found that exposure to atomic lithium leads, at room temperature, to partial conversion with formation of Co and Li2O, but also of a Li2O2 or LiOH overlayer at the surface of the sample. As full conversion was obtained at 150 C, a comparison with room-temperature measurements enables the understanding of the kinetic limitations during lithiation.

AB - We have studied the reaction of 5 nm thick polycrystalline CoO films with atomic lithium as a model for the discharge of lithium-ion conversion battery electrodes. The electronic structure has been investigated with X-ray photoemission, ultraviolet photoemission, and inverse photoemission, while the morphology, crystal structure, and unoccupied states of the films have been examined with transmission electron microscopy. It is found that exposure to atomic lithium leads, at room temperature, to partial conversion with formation of Co and Li2O, but also of a Li2O2 or LiOH overlayer at the surface of the sample. As full conversion was obtained at 150 C, a comparison with room-temperature measurements enables the understanding of the kinetic limitations during lithiation.

UR - http://www.scopus.com/inward/record.url?scp=84880520499&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84880520499&partnerID=8YFLogxK

U2 - https://doi.org/10.1021/jp404875g

DO - https://doi.org/10.1021/jp404875g

M3 - Article

VL - 117

SP - 14518

EP - 14525

JO - Journal of Physical Chemistry C

JF - Journal of Physical Chemistry C

SN - 1932-7447

IS - 28

ER -