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Flexible and low-cost poly(ethylene oxide) (PEO)-based electrolytes are promising for all-solid-state Li-metal batteries because of their compatibility with a metallic lithium anode. However, the low room-temperature Li-ion conductivity of PEO solid electrolytes and severe lithium-dendrite growth limit their application in high-energy Li-metal batteries. Here we prepared a PEO/perovskite Li 3/8 Sr 7/16 Ta 3/4 Zr 1/4 O 3 composite electrolyte with a Li-ion conductivity of 5.4 × 10 −5 and 3.5 × 10 −4 S cm −1 at 25 and 45 °C, respectively; the strong interaction between the F − of TFSI − (bis-trifluoromethanesulfonimide) and the surface Ta 5+ of the perovskite improves the Li-ion transport at the PEO/perovskite interface. A symmetric Li/composite electrolyte/Li cell shows an excellent cyclability at a high current density up to 0.6 mA cm −2 . A solid electrolyte interphase layer formed in situ between the metallic lithium anode and the composite electrolyte suppresses lithium-dendrite formation and growth. All-solid-state Li|LiFePO 4 and high-voltage Li|LiNi 0.8 Mn 0.1 Co 0.1 O 2 batteries with the composite electrolyte have an impressive performance with high Coulombic efficiencies, small overpotentials, and good cycling stability.
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This content will become publicly available on June 15, 2026
Flexible Focalization: An Addititively Manufactured, Conformal, Low-Profile Multilayer Transmitarray for Space-Based 5G/MM Wave Applications
For the first time, a 28 GHz additively manufactured multilayer flexible transmitarray (TA) system is introduced, utilizing inkjet printing on thin, flexible Polyethylene Terephthalate (PET) substrates.The 5.4 x 5.4 cm TA achieves ±28° 3 dB angular coverage in two axes, a solid angular coverage of 0.45 sr, and a peak gain of 15.3 dBi, all within a compact 2.6 cm thickness. Flexibility tests under varying bend radii demonstrate robust performance for conformal applications. This scalable, low-cost design sets the stage for large-area, inkjet printed flexible RF/mmWave modules. By leveraging additive manufacturing, this lightweight, ultra-low form factor TA system represents a crucial innovation in integration of TAs with space-based 5G communication architectures.
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- Award ID(s):
- 2322366
- PAR ID:
- 10627374
- Publisher / Repository:
- IEEE
- Date Published:
- ISBN:
- 979-8-3315-1409-9
- Page Range / eLocation ID:
- 851 to 854
- Format(s):
- Medium: X
- Location:
- San Francisco, CA, USA
- Sponsoring Org:
- National Science Foundation
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