| Autor: |
Dixit MB, Zaman W, Bootwala Y; George W. Woodruff School of Mechanical Engineering , Georgia Institute of Technology , Atlanta , Georgia 30313 , United States., Zheng Y, Hatzell MC; George W. Woodruff School of Mechanical Engineering , Georgia Institute of Technology , Atlanta , Georgia 30313 , United States., Hatzell KB |
| Jazyk: |
angličtina |
| Zdroj: |
ACS applied materials & interfaces [ACS Appl Mater Interfaces] 2019 Dec 04; Vol. 11 (48), pp. 45087-45097. Date of Electronic Publication: 2019 Nov 21. |
| DOI: |
10.1021/acsami.9b15463 |
| Abstrakt: |
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. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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