Scalable Manufacturing of Hybrid Solid Electrolytes with Interface Control

Marm B. Dixit, Wahid Zaman, Yousuf Bootwala, Yanjie Zheng, Marta C. Hatzell, Kelsey B. Hatzell

Research output: Contribution to journalArticlepeer-review

26 Scopus citations


Hybrid solid electrolytes are promising alternatives for high energy density metallic lithium batteries. Scalable manufacturing of multi-material electrolytes with tailored transport pathways can provide an avenue toward controlling Li stripping and deposition mechanisms in all-solid-state devices. A novel roll-To-roll compatible coextrusion device is demonstrated to investigate mesostructural control during manufacturing. Solid electrolytes with 25 and 75 wt % PEO-LLZO compositions are investigated. The coextrusion head is demonstrated to effectively process multimaterial films with strict compositional gradients in a single pass. An average manufacturing variability of 5.75 ± 1.2 μm is observed in the thickness across all the electrolytes manufactured. Coextruded membranes with 1 mm stripes show the highest room temperature conductivity of 8.8 × 10-6 S cm-1 compared to the conductivity of single-material films (25 wt %, 1.2 × 10-6 S cm-1 75 wt %, 1.8 × 10-6 S cm-1). Distribution of relaxation times and effective mean field theory calculations suggest that the interface generated between the two materials possesses high ion-conducting properties. Computational simulations are used to further substantiate the influence of macroscale interfaces on ion transport.

Original languageEnglish (US)
Pages (from-to)45087-45097
Number of pages11
JournalACS Applied Materials and Interfaces
Issue number48
StatePublished - Dec 4 2019
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • General Materials Science


  • coextrusion
  • hybrid solid electrolyte
  • interfaces
  • ion transport
  • process control
  • scalable manufacturing
  • solid-state battery


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