Custom-form iron trifluoride Li-batteries using material extrusion and electrolyte exchanged ionogels

Cardenas, Jorge A.; Bullivant, John P.; Wygant, Bryan R.; Lapp, Aliya S.; Bell, Nelson S.; Lambert, Timothy N.; Merrill, Laura C.; Talin, A. Alec; Cook, Adam W.; Allcorn, Eric; Harrison, Katharine L.

doi:10.1016/j.addma.2024.104102

Cited by 1 publication

(2 citation statements)

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“…A 1 M lithium perchlorate (LiClO 4 ) in propylene carbonate (PC) solution was prepared and used for a solvent exchange process. Further details of this procedure are found in previous publications [8,9,17], which found improved capacity retention during room temperature cycling after performing a solvent exchange. Briefly, in this process, the disks with the composite electrodes and ionogel layer were immersed in small volumes of stock solvent exchange solution.…”

Section: Methodsmentioning

confidence: 99%

“…The merits of the varieties of other SSEs have been examined previously and thus will not be discussed in detail [13,14]. One reason polymer-based SSEs are appealing is they can be designed to be flexible [15][16][17], whereas rigid separators such as garnets, oxides, and sulfides are harder to incorporate in many cell formats (e.g., prismatic, cylindrical), limiting the energy density of the battery build.…”

Section: Introductionmentioning

confidence: 99%

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Composite Ionogel Electrodes for Polymeric Solid-State Li-Ion Batteries

Schorr,

Bhandarkar,

McBrayer

et al. 2024

Polymers

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Realizing rechargeable cells with practical energy and power density requires electrodes with high active material loading, a remaining challenge for solid-state batteries. Here, we present a new strategy based on ionogel-derived solid-state electrolytes (SSEs) to form composite electrodes that enable high active material loading (>10 mg/cm2, ~9 mA/cm2 at 1C) in a scalable approach for fabricating Li-ion cells. By tuning the precursor and active materials composition incorporated into the composite lithium titanate electrodes, we achieve near-theoretical capacity utilization at C/5 rates and cells capable of stable cycling at 5.85 mA/cm2 (11.70 A/g) with over 99% average Coulombic efficiency at room temperature. Finally, we demonstrate a complete polymeric solid-state cell with a composite anode and a composite lithium iron phosphate cathode with ionogel SSEs, which is capable of stable cycling at a 1C rate.

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Section: Methodsmentioning

confidence: 99%