Ghosh, Kuntal and Raja, Mir Wasim (2022) Ga-Doped LLZO Solid-State Electrolyte with Unique ``Plate-like'' Morphology Derived from Water Hyacinth (Eichhornia crassipes) Aquatic Weed: Waste to Wealth Conversion. ACS Omega, 7 (37). pp. 33385-33396. ISSN 2470-1343

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An attempt has been made for the first time to convert waste biomass such as water hyacinth (WH) to a functional energy material in a cost-effective way. The present research describes a novel exo-templating methodology to develop engineered microstructure of Ga-doped Li7La3Zr2O12 (Li6.25La3Ga0.25Zr2O12, referred as WH-Ga-LLZO) solid-state electrolyte for its use in all solid-state lithium batteries (ASSLBs) by mimicking the intercellular structure of water hyacinth (Eichhornia crassipes), an invasive and noxious aquatic plant. The developed exo-templated methodology offers a low calcination temperature of 1000 degrees C in air where all the major peaks could be indexed as cubic garnet, as confirmed by XRD. The FESEM micrographs revealed a unique ``plate-like'' morphology that mimicked the intercellular structure of water hyacinth fiber. The bulk lithium-ion conductivity in the WH-Ga-LLZO electrolyte was found to be 3.94 x 10(-5) S/cm. Li/WH-Ga-LLZO/Li cells were galvanostatically cycled for a continuous 295 h with increasing step current densities from 28 mu A/cm(3) without a short circuit. The highest current density as measured for maximum polarization in a symmetric cell was found to be 452 mu A/cm(2). The WH exotemplated methodology was thus developed and optimized and can be extended for synthesizing any application-specific multifunctional materials.

Item Type: Article
Subjects: Electronics
Depositing User: Bidhan Chaudhuri
Date Deposited: 30 Aug 2023 05:47
Last Modified: 30 Aug 2023 05:47

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