Rapid sintering of Li6.5La3Zr1Nb0.5Ce0.25Ti0.25O12 for high density lithium garnet electrolytes with current induced in situ interfacial resistance reduction

Stockham, M. P.; Dong, B.; James, M. S.; Zhu, P.; Kendrick, E.; Slater, P. R.

doi:10.1039/d3ya00123g

Cited by 2 publications

(1 citation statement)

References 142 publications

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“…The sample with a dwell time of 6 h exhibits higher conductivity and a lower activation energy of 0.497 eV, while the sample with dwell time of 12 h has a higher activation energy of 0.507 eV. The obtained activation energy values, though higher than those reported for other HEGs (Fu and Jacob, 2022;Stockham et al, 2023), may be influenced by the low density of LLZTTSO resulting from the relatively low sintering temperature and the consequent formation of suboptimal grain boundaries (Naqash et al, 2019). It is noteworthy that the impact of the local structure created by different dopants is not addressed in this study, which could contribute to the observed increased energy barrier for Li + diffusion.…”

Section: Electrochemical Propertiesmentioning

confidence: 56%

Preparation and electrochemical properties of Li6La3Zr0.7Ti0.3Ta0.5Sb0.5O12 high-entropy Li-garnet solid electrolyte

Ye,

Ting,

Dashjav

et al. 2024

Front. Energy Res.

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Garnet-type solid electrolytes stand out as promising Li-ion conductors for the next-generation batteries. It has been demonstrated that the inherent properties of garnets can be tailored by introducing various dopants into their crystal structures. Recently, there has been a growing interest in the concept of high entropy stabilization for materials design. In this study, we synthesized high-entropy garnets denoted as Li6La3Zr0.7Ti0.3Ta0.5Sb0.5O12 (LLZTTSO), wherein Ti, Sb, and Ta occupy the Zr site. The formation of the cubic garnet phase in LLZTTSO was confirmed through X-ray diffraction (XRD), and the resulting lattice parameter agreed with predictions made using computational methods. Despite the substantial porosity (relative density 80.6%) attributed to the low sintering temperature, LLZTTSO exhibits a bulk ionic conductivity of 0.099 mS cm−1 at 25°C, and a total ionic conductivity of 0.088 mS cm−1, accompanied by an activation energy of 0.497 eV. Furthermore, LLZTTSO demonstrates a critical current density of 0.275 mA cm−2 at 25°C, showcasing its potential even without any interfacial modification.

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Section: Electrochemical Propertiesmentioning

confidence: 56%

Preparation and electrochemical properties of Li6La3Zr0.7Ti0.3Ta0.5Sb0.5O12 high-entropy Li-garnet solid electrolyte

Ye,

Ting,

Dashjav

et al. 2024

Front. Energy Res.

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The local disorder induced by high-entropy doping results in highly stable cathode materials for aqueous potassium-ion batteries

Zeng,

Liu,

Ali

et al. 2024

Applied Catalysis B: Environment and Energy

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Rapid sintering of Li_6.5La₃Zr₁Nb_0.5Ce_0.25Ti_0.25O₁₂ for high density lithium garnet electrolytes with current induced in situ interfacial resistance reduction

Abstract: A primary target of energy storage is the all solid state battery, however finding a suitable solid state electrolyte has proven troublesome. Lithium garnet materials are promising solid state electrolytes...

Cited by 2 publications

References 142 publications

Preparation and electrochemical properties of Li6La3Zr0.7Ti0.3Ta0.5Sb0.5O12 high-entropy Li-garnet solid electrolyte

Preparation and electrochemical properties of Li6La3Zr0.7Ti0.3Ta0.5Sb0.5O12 high-entropy Li-garnet solid electrolyte

The local disorder induced by high-entropy doping results in highly stable cathode materials for aqueous potassium-ion batteries

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