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Probing a battery electrolyte drop with ambient pressure photoelectron spectroscopy

Maibach, Julia; Källquist, Ida; Andersson, Margit LU ; Urpelainen, Samuli LU ; Edström, Kristina; Rensmo, Håkan; Siegbahn, Hans and Hahlin, Maria (2019) In Nature Communications 10(1-7).
Abstract

Operando ambient pressure photoelectron spectroscopy in realistic battery environments is a key development towards probing the functionality of the electrode/electrolyte interface in lithium-ion batteries that is not possible with conventional photoelectron spectroscopy. Here, we present the ambient pressure photoelectron spectroscopy characterization of a model electrolyte based on 1M bis(trifluoromethane)sulfonimide lithium salt in propylene carbonate. For the first time, we show ambient pressure photoelectron spectroscopy data of propylene carbonate in the liquid phase by using solvent vapor as the stabilizing environment. This enables us to separate effects from salt and solvent, and to characterize changes in electrolyte... (More)

Operando ambient pressure photoelectron spectroscopy in realistic battery environments is a key development towards probing the functionality of the electrode/electrolyte interface in lithium-ion batteries that is not possible with conventional photoelectron spectroscopy. Here, we present the ambient pressure photoelectron spectroscopy characterization of a model electrolyte based on 1M bis(trifluoromethane)sulfonimide lithium salt in propylene carbonate. For the first time, we show ambient pressure photoelectron spectroscopy data of propylene carbonate in the liquid phase by using solvent vapor as the stabilizing environment. This enables us to separate effects from salt and solvent, and to characterize changes in electrolyte composition as a function of probing depth. While the bulk electrolyte meets the expected composition, clear accumulation of ionic species is found at the electrolyte surface. Our results show that it is possible to measure directly complex liquids such as battery electrolytes, which is an important accomplishment towards true operando studies.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Nature Communications
volume
10
issue
1-7
publisher
Nature Publishing Group
external identifiers
  • scopus:85068901330
ISSN
2041-1723
DOI
10.1038/s41467-019-10803-y
language
English
LU publication?
yes
id
f9697965-3737-425e-8c06-9d47ce9816b8
date added to LUP
2019-07-22 16:07:23
date last changed
2019-08-28 04:57:08
@article{f9697965-3737-425e-8c06-9d47ce9816b8,
  abstract     = {<p>Operando ambient pressure photoelectron spectroscopy in realistic battery environments is a key development towards probing the functionality of the electrode/electrolyte interface in lithium-ion batteries that is not possible with conventional photoelectron spectroscopy. Here, we present the ambient pressure photoelectron spectroscopy characterization of a model electrolyte based on 1M bis(trifluoromethane)sulfonimide lithium salt in propylene carbonate. For the first time, we show ambient pressure photoelectron spectroscopy data of propylene carbonate in the liquid phase by using solvent vapor as the stabilizing environment. This enables us to separate effects from salt and solvent, and to characterize changes in electrolyte composition as a function of probing depth. While the bulk electrolyte meets the expected composition, clear accumulation of ionic species is found at the electrolyte surface. Our results show that it is possible to measure directly complex liquids such as battery electrolytes, which is an important accomplishment towards true operando studies.</p>},
  articleno    = {3080},
  author       = {Maibach, Julia and Källquist, Ida and Andersson, Margit and Urpelainen, Samuli and Edström, Kristina and Rensmo, Håkan and Siegbahn, Hans and Hahlin, Maria},
  issn         = {2041-1723},
  language     = {eng},
  month        = {07},
  number       = {1-7},
  publisher    = {Nature Publishing Group},
  series       = {Nature Communications},
  title        = {Probing a battery electrolyte drop with ambient pressure photoelectron spectroscopy},
  url          = {http://dx.doi.org/10.1038/s41467-019-10803-y},
  volume       = {10},
  year         = {2019},
}