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Journal article
Solid–liquid–solid mediated artificial SEI coated stable lithium and high-sulfur percentage SPAN for high performance Li–S batteries
Energy advances, v 3, pp 584-591
23 Jan 2024
Featured in Collection : Research Supported by Drexel Libraries' OA Programs
Abstract
Lithium-sulfur batteries (LSBs) are a next generation battery that are an attractive alternative to lithium-ion batteries. Although, LSBs are conventionally reliant on ether electrolytes that promote the unwanted polysulfide shuttling effect and lead to safety concerns due to low flash points. Another major issue is the instability of lithium metal at the anode. These two issues hinder the scaling up of this chemistry from coin cells to pouch cells. Herein, we present a novel synthesis method to produce sulfurized polyacrylonitrile (SPAN), a material that can avoid polysulfide formation and is compatible with carbonate electrolytes. Our synthesis method results in an 18% increase in sulfur content, compared to a traditional synthesis method. The new synthesis method also creates smaller cathode agglomerations which improves cell performance. We also studied the influence of a polymeric artificial SEI on the stability of the lithium metal anode. Using postmortem XPS, we found an increase in LiF with this anode treatment. We combined these materials in a Li-SPAN pouch cell to investigate their performance at a larger scale and found it to be electrochemically stable in a commercial carbonate electrolyte. It yielded an initial stable capacity of 1068 mA h gsulfur-1 (572 mA h gSPAN-1) with a capacity retention of 82% after 200 cycles. This treated pouch cell lasted nearly five times longer than a conventional pouch cell with no lithium treatment. Comparison of Li-SPAN pouch cells with and without lithium treatment. The Li-SPAN pouch cell with the PVDF-HFP : DMF lithium treatment shows a LiF rich SEI.
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Details
- Title
- Solid–liquid–solid mediated artificial SEI coated stable lithium and high-sulfur percentage SPAN for high performance Li–S batteries
- Creators
- Krishna Kumar Sarode - Drexel University, Chemical and Biological EngineeringTaber Yim - Drexel UniversityRhyz Pereira - Drexel UniversityNeal A Cardoza - Drexel University, Chemical and Biological EngineeringVibha Kalra (Corresponding Author) - Drexel University, Chemical and Biological Engineering
- Publication Details
- Energy advances, v 3, pp 584-591
- Publisher
- Royal Society of Chemistry; Cambridge
- Grant note
- The authors would like to acknowledge funding from the National Science Foundation (award numbers: NSF-2211049 and NSF-1919177). We would also like to acknowledge the Materials and Characterization Core (MCC) staff and instrument time at Drexel University. Finally, thanks to Dr Michelle Gannon and Professor David Velinksy from the Academy of Natural Sciences at Drexel University for their help with elemental analysis of our samples.
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Chemical and Biological Engineering
- Web of Science ID
- WOS:001151623500001
- Scopus ID
- 2-s2.0-85183495653
- Other Identifier
- 991021861179304721
InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Chemistry, Physical
- Energy & Fuels
- Materials Science, Multidisciplinary