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All-Solid-State Garnet Type Sulfurized Polyacrylonitrile/Lithium-Metal Battery Enabled by an Inorganic Lithium Conductive Salt and a Bilayer Electrolyte Architecture by Shi, Changmin (author);Alexander, George V. (author);O’Neill, Jonathan (author);Duncan, Keith (author);Godbey, Griffin (author);Wachsman, Eric D. (author) is a Engineering article available to read on EtoBox.

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An all-solid-state garnet Li-S cell with a solidstate sulfur cathode is fabricated by mixing sulfurized polyacrylonitrile (SPAN) with molten lithium bis-(fluorosulfonyl)imide (LiFSI) and nano graphene wire (NGW) to improve interfacial contact and ionic and electronic conduction throughout the solid cathode structure. This solid SPAN/LiFSI/NGW cathode was deposited on a dense/porous bilayer garnet structure impregnated on the porous anode side with Li metal and obtained an average discharge capacity of 1400 mAh/g at a current density of 0.167 mA/cm 2 (0.1C) for over 40 cycles and of 437 mAh/g at 0.84 mA/cm 2 (0.5C) for over 200 cycles for our Li-S cell at 60 °C. This new cathode architecture is a significant advancement toward the development of high-performance all-solid-state Li-S batteries.

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Author

Shi, Changmin (author);Alexander, George V. (author);O’Neill, Jonathan (author);Duncan, Keith (author);Godbey, Griffin (author);Wachsman, Eric D. (author)

Publisher

American Chemical Society (ACS)

Published

2023

Language

EN

Field

Engineering (Physical Sciences)