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Composite Electrode Ink Formulation for All Solid-State Batteries

dc.contributor.authorShen, Fengyu
dc.contributor.authorDixit, Marm B.
dc.contributor.authorZaman, Wahid
dc.contributor.authorHortance, Nicholas
dc.contributor.authorRogers, Bridget
dc.contributor.authorHatzell, Kelsey B.
dc.identifier.citationF. Shen, M. Dixit, W. Zaman, N. Hortance, B. Rogers, K. Hatzell Composite electrode ink formulation for all solid-state batteries J. Electrochem. Soc., 166 (2019), pp. A3182-A3188en_US
dc.description.abstractSolid-state batteries employ composite electrodes which contain a solid ion conductor, a solid active material, a conductive additive, and a binder. The electrode microstructure fundamentally differs from electrodes in conventional batteries because the pore region is ion blocking. While there is extensive research on how to integrate a lithium metal with inorganic electrolytes, there is less knowledge on how an electrode can be integrated with an inorganic electrolyte. Solution processing techniques are ideal for scalable manufacturing and rely on creating an ink which combines the solid material, a binder, and solvent. Ink engineering relies on tailoring the fluidics (rheology), aggregation behavior, and stability for a desired coating process. In this work, we systematically probe the role of two ink constituents: the (1) binder, and (2) solvent on electrode microstructure formation. Lithium titanate anodes achieve nearly a 3-4X increase in capacity from 1.5 mAh/g and 3 mAh/g to 9 mAh/g and >= 12 mAh/g when a high viscosity solvent is employed. The binder plays a larger role in dictating performance of the electrode than surface adhesion properties. Inks with well dispersed constituents led to more effective electrodes for charge storage. (C) The Author(s) 2019. Published by ECS.en_US
dc.description.sponsorshipThis material is based upon work supported by the National Science Foundation under grant No. 1847029 (W.Z.) and No. 1727863 (M.D.). The authors acknowledge the Vanderbilt Institute of Nanoscience and Engineering (VINSE) for access to their shared characterization facilities. The authors acknowledge support from the Ralph E. Powe Junior Faculty Enhancement Award.en_US
dc.publisherJournal of the Electrochemical Societyen_US
dc.rightsThis is an open access article distributed under the terms of the Creative Commons Attribution 4.0 License (CC BY,, which permits unrestricted reuse of the work in any medium, provided the original work is properly cited.
dc.subjectLITHIUM; BINDERen_US
dc.titleComposite Electrode Ink Formulation for All Solid-State Batteriesen_US

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