Journal
JOURNAL OF MATERIALS CHEMISTRY A
Volume 5, Issue 46, Pages 24103-24109Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7ta08129d
Keywords
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Funding
- Joint Center for Energy Storage Research (JCESR), an Energy Innovation Hub - U.S. Department of Energy, Office of Science, Basic Energy Sciences
- U.S. Department of Energy Office of Science laboratory [DE-AC02-06CH11357]
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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. 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.
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