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Title: Improved performance through tight coupling of redox cycles of sulfur and 2,6-polyanthraquinone in lithium–sulfur batteries

Journal Article · · Journal of Materials Chemistry. A
DOI: https://doi.org/10.1039/C7TA08129D · OSTI ID:1421979
ORCiD logo [1]; ORCiD logo [1];  [2]; ORCiD logo [3];  [4];  [2];  [1]; ORCiD logo [1]; ORCiD logo [1]
  1. Argonne National Lab. (ANL), Argonne, IL (United States). Joint Center for Energy Storage Research (JCESR); Argonne National Lab. (ANL), Argonne, IL (United States). Chemical Sciences and Engineering Division
  2. Argonne National Lab. (ANL), Argonne, IL (United States). Chemical Sciences and Engineering Division
  3. Argonne National Lab. (ANL), Argonne, IL (United States). Joint Center for Energy Storage Research (JCESR)
  4. Argonne National Lab. (ANL), Argonne, IL (United States). Materials Science Division

Lithium–sulfur (Li–S) batteries offer high theoretical capacity and energy density; however, complex nanoengineered cathodes have been required to suppress the unwanted polysulfide shuttling. The textural complexity of such electrodes hinders detailed understanding of their function, impeding the development of new materials. In this report, the redox-active polymer 2,6-polyanthraquinone (PAQ) was incorporated into the cathode. The presence of this polymer improves capacity retention in galvanostatic cycling and inhibits Li corrosion and S deposition. In conclusion, we show that redox reactions of this polymer are strongly coupled to the S redox cycle and hypothesize that the observed improvements in the performance originate from the electrocatalytic inhibition of polysulfide shuttling in this system.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1421979
Journal Information:
Journal of Materials Chemistry. A, Journal Name: Journal of Materials Chemistry. A Journal Issue: 46 Vol. 5; ISSN JMCAET; ISSN 2050-7488
Publisher:
Royal Society of ChemistryCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (2)

High performance polyanthraquinone/Co–Ni(OH) 2 aqueous batteries based on hydroxyl and potassium insertion/extraction reactions journal January 2020
Lipophilic Additives for Highly Concentrated Electrolytes in Lithium-Sulfur Batteries journal January 2019