High Sulfur Loading and Capacity Retention in Bilayer Garnet Sulfurized-Polyacrylonitrile/Lithium-Metal Batteries with Gel Polymer Electrolytes

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dc.contributor.authorShi, Changmin
dc.contributor.authorTakeuchi, Saya
dc.contributor.authorAlexander, George V.
dc.contributor.authorHamann, Tanner
dc.contributor.authorO'Neill, Jonathan
dc.contributor.authorDura, Joseph A.
dc.contributor.authorWachsman, Eric D.
dc.date.accessioned2024-06-24T17:32:35Z
dc.date.available2024-06-24T17:32:35Z
dc.date.issued2023-09-24
dc.description.abstractThe cubic-garnet (Li7La3Zr2O12, LLZO) lithium–sulfur battery shows great promise in the pursuit of achieving high energy densities. The sulfur used in the cathodes is abundant, inexpensive, and possesses high specific capacity. In addition, LLZO displays excellent chemical stability with Li metal; however, the instabilities in the sulfur cathode/LLZO interface can lead to performance degradation that limits the development of these batteries. Therefore, it is critical to resolve these interfacial challenges to achieve stable cycling. Here, an innovative gel polymer buffer layer to stabilize the sulfur cathode/LLZO interface is created. Employing a thin bilayer LLZO (dense/porous) architecture as a solid electrolyte and significantly high sulfur loading of 5.2 mg cm−2, stable cycling is achieved with a high initial discharge capacity of 1542 mAh g−1 (discharge current density of 0.87 mA cm−2) and an average discharge capacity of 1218 mAh g−1 (discharge current density of 1.74 mA cm−2) with 80% capacity retention over 265 cycles, at room temperature (22 °C) and without applied pressure. Achieving such stability with high sulfur loading is a major step in the development of potentially commercial garnet lithium–sulfur batteries.
dc.description.urihttps://doi.org/10.1002/aenm.202301656
dc.identifierhttps://doi.org/10.13016/xnlu-0ndo
dc.identifier.citationC. Shi, S. Takeuchi, G. V. Alexander, T. Hamann, J. O'Neill, J. A. Dura, E. D. Wachsman, High Sulfur Loading and Capacity Retention in Bilayer Garnet Sulfurized-Polyacrylonitrile/Lithium-Metal Batteries with Gel Polymer Electrolytes. Adv. Energy Mater. 2023, 13, 2301656.
dc.identifier.urihttp://hdl.handle.net/1903/32662
dc.language.isoen_US
dc.publisherWiley
dc.relation.isAvailableAtA. James Clark School of Engineeringen_us
dc.relation.isAvailableAtMaterials Science & Engineeringen_us
dc.relation.isAvailableAtDigital Repository at the University of Marylanden_us
dc.relation.isAvailableAtUniversity of Maryland (College Park, MD)en_us
dc.titleHigh Sulfur Loading and Capacity Retention in Bilayer Garnet Sulfurized-Polyacrylonitrile/Lithium-Metal Batteries with Gel Polymer Electrolytes
dc.typeArticle
local.equitableAccessSubmissionNo

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