English
 
User Manual Privacy Policy Disclaimer Contact us
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  The mechanism of Li2S activation in lithium-sulfur batteries: Can we avoid the polysulfide formation?

Vizintin, A., Chabanne, L., Tchernychova, E., Arčon, I., Stievano, L., Aquilanti, G., et al. (2017). The mechanism of Li2S activation in lithium-sulfur batteries: Can we avoid the polysulfide formation? Journal of Power Sources, 344, 208-217. doi:10.1016/j.jpowsour.2017.01.112.

Item is

Basic

show hide
Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002C-8055-8 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-002C-8056-6
Genre: Journal Article

Files

show Files
hide Files
:
2395267.pdf (Publisher version), 4MB
 
File Permalink:
-
Name:
2395267.pdf
Description:
-
Visibility:
Restricted (Max Planck Institute of Colloids and Interfaces, MTKG; )
MIME-Type / Checksum:
application/pdf
Technical Metadata:
Copyright Date:
-
Copyright Info:
-
License:
-

Locators

show

Creators

show
hide
 Creators:
Vizintin, Alen, Author
Chabanne, Laurent1, Author              
Tchernychova, Elena, Author
Arčon, Iztok, Author
Stievano, Lorenzo, Author
Aquilanti, Giuliana, Author
Antonietti, Markus2, Author              
Fellinger, Tim-Patrick1, Author              
Dominko, Robert, Author
Affiliations:
1Tim Fellinger, Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society, ou_1863322              
2Markus Antonietti, Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society, ou_1863321              

Content

show
hide
Free keywords: -
 Abstract: Electrochemical reactions in the Lisingle bondS batteries are considered as a multistep reaction process with at least 2–3 equilibrium states. Here we report a possibility of having a conversion of Li2S into sulfur without detectible formation of polysulfides. That was confirmed by using a novel material system consisting of carbon coated Li2S particles prepared by carbothermal reduction of Li2SO4. Two independent in operando measurements showed direct oxidation of Li2S into sulfur for this system, with almost negligible formation of polysulfides at potentials above 2.5 V vs. Li/Li+. Our results link the diversity of first charge profiles in the literature to the Li2S oxidation mechanism and show the importance of ionic wiring within the material. Furthermore, we demonstrate that the Li2S oxidation mechanism depends on the relative amount of soluble sulfur in the electrolyte. By controlling the type and the amount of electrolyte within the encapsulating carbon shell, it is thereby possible to control the reaction mechanism of Li2S activation.

Details

show
hide
Language(s):
 Dates: 2017-02-042017-03-15
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.1016/j.jpowsour.2017.01.112
BibTex Citekey: Vizintin2017208
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Journal of Power Sources
  Abbreviation : J. Power Sources
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: Amsterdam, The Netherlands : Elsevier
Pages: - Volume / Issue: 344 Sequence Number: - Start / End Page: 208 - 217 Identifier: ISSN: 0378-7753