Microstructure and temperature dependent lithium ion transport of ceramic–polymer composite electrolyte for solid-state lithium ion batteries based on garnet-type Li7La3Zr2O12

Langer, Frederieke; Bardenhagen, Ingo; Glenneberg, Jens; Kun, Róbert

doi:10.1016/j.ssi.2016.04.014

Cited by 87 publications

(72 citation statements)

References 42 publications

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“…The reduced crystallinity was attributed to crosslinking of the BEPEO, which impeded the formation of ordered structures of the polyethyleneglycol chains. This increases amorphicity and Li + transferability in the BEPEO . Furthermore, thermogravimetry analysis (TGA) curves of the PEO‐Li, PEO‐LLZ, and BEPEO‐LLZ films showed that they decompose at approximately 350 °C owing to dehydration and decomposition of the polymer host.…”

Section: Resultsmentioning

confidence: 99%

“…This increases amorphicity and Li + transferability in the BEPEO. [59] Furthermore, thermogravimetry analysis( TGA) curves of the PEO-Li,P EO-LLZ,a nd BEPEO-LLZ films showedt hat they decompose at approximately 350 8Co wing to dehydration and decomposition of the polymer host. The residual mass re-mained almost unchanged above 400 8C, as shown in Figure 9b.I np articular,t he garnet filler increased the onset of the decomposition temperature up to 348 8Cf or the PEO-LLZ film, compared with that of the pure PEO-Li at 329 8Ca nd the BEPEO-LLZ at 298 8C.…”

Section: Electrochemical Performancementioning

confidence: 99%

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A Crosslinked Polyethyleneglycol Solid Electrolyte Dissolving Lithium Bis(trifluoromethylsulfonyl)imide for Rechargeable Lithium Batteries

et al. 2019

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Replacing liquid electrolytes with solid ones can provide advantages in safety, and all‐solid‐state batteries with solid electrolytes are proposed to solve the issue of the formation of lithium dendrites. In this study, a crosslinked polymer composite solid electrolyte was presented, which enabled the construction of lithium batteries with outstanding electrochemical behavior over long‐term cycling. The crosslinked polymeric host was synthesized through polymerization of the terminal amines of O,O‐bis(2‐aminopropyl) polypropylene glycol‐block‐polyethylene glycol‐block‐polypropylene glycol and terminal epoxy groups of bisphenol A diglycidyl ether at 90 °C and provided an amorphous matrix for Li+ dissolution. This composite solid electrolyte containing Li+ salt and garnet filler exhibited high flexibility, which supported the formation of favorable interfaces with the active materials, and possessed enough mechanical strength to suppress the penetration of lithium dendrites. Ionic conductivities higher than 5.0×10−4 S cm−1 above 45 °C were obtained as well as a wide electrochemical stability window (>4.51 V vs. Li/Li+) and a high Li+ diffusion coefficient (≈16.6×10−13 m2 s−1). High cycling stability (>500 cycles or 1000 h) was demonstrated.

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Section: Resultsmentioning

confidence: 99%

Section: Electrochemical Performancementioning

confidence: 99%

A Crosslinked Polyethyleneglycol Solid Electrolyte Dissolving Lithium Bis(trifluoromethylsulfonyl)imide for Rechargeable Lithium Batteries

et al. 2019

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“…The addition of ceramic particles, either inert [21] or Li-ion conductive [23], has been widely investigated with the aim of improving both electrochemical and mechanical properties. While the effects of various Li salts and temperature ranges on the electrochemical properties of PEO are well-described in numerous studies [20,21,[24][25][26][27][28], there are only comparatively few studies that address the impact on the mechanical properties of the solid electrolyte [29][30][31].…”

Section: Introductionmentioning

confidence: 99%

Correlation of Mechanical and Electrical Behavior of Polyethylene Oxide-Based Solid Electrolytes for All-Solid State Lithium-Ion Batteries

et al. 2019

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Mechanical and electrochemical stability are key issues for large-scale production of solid state Li-ion batteries. Polymer electrolytes can provide good ionic conductivity, but mechanical strength needs to be improved. In this study, we investigate the correlation of mechanical and electrical properties of poly (ethylene oxide) (PEO)-based solid electrolytes for Li-ion batteries. The influence of alumina and LiClO4 addition are investigated. Differential scanning calorimetry (DSC) is used to study the thermal behavior of salt-free and salt-containing samples and to identify the melting temperature. Dynamic mechanical analysis reveals the elastic properties as a function of temperature. Electrochemical properties are investigated using impedance spectroscopy. It is found that addition of alumina increases mechanical strength, while LiClO4 decreases it. Addition of LiClO4 and Al2O3 increases ionic conductivity and improves mechanical properties. However, there is no overlapping window of high mechanical strength and high ionic conductivity.

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“…The typical approach to prepare ceramic‐polymer composites is based on mixing the two materials and tape casting the composite slurry, which results in a flexible membrane with ceramic particles dispersed in a polymer matrix (Figure A). However, the noncontiguous network of ceramic particles forces the lithium ions to diffuse through the polymer matrix, limiting the overall ionic conductivity . To benefit from the high ionic conductivity of the ceramic, new composite architectures, providing a percolative ceramic network, need to be designed.…”

Section: Introductionmentioning

confidence: 99%

Dense freeze‐cast Li₇La₃Zr₂O₁₂ solid electrolytes with oriented open porosity and contiguous ceramic scaffold

et al. 2018

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Freeze casting is used for the first time to prepare solid electrolyte scaffolds with oriented porosity and dense ceramic walls made of Li 7 La 3 Zr 2 O 12 (LLZO), one of the most promising candidates for solid state battery electrolytes. Processing parameters -such as solvent solidification rate, solvent type, and ceramic particle size -are investigated, focusing on their influence on porosity and ceramic wall density. Dendrite-like porosity is obtained when using cyclohexane and dioxane as solvents. Lamellar porosity is observed in aqueous slurries resulting in a structure with the highest apparent porosity and densest ceramic scaffold but weakest mechanical properties due to the lack of interlamellar support. The use of smaller LLZO particle size in the slurries resulted in lower porosity and denser ceramic walls. The intrinsic ionic conductivity of the oriented LLZ ceramic scaffold is unaffected by the freeze casting technique, providing a promising ceramic scaffold for polymer infill in view of designing new types of ceramic-polymer composites.

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Microstructure and temperature dependent lithium ion transport of ceramic–polymer composite electrolyte for solid-state lithium ion batteries based on garnet-type Li7La3Zr2O12

Cited by 87 publications

References 42 publications

A Crosslinked Polyethyleneglycol Solid Electrolyte Dissolving Lithium Bis(trifluoromethylsulfonyl)imide for Rechargeable Lithium Batteries

A Crosslinked Polyethyleneglycol Solid Electrolyte Dissolving Lithium Bis(trifluoromethylsulfonyl)imide for Rechargeable Lithium Batteries

Correlation of Mechanical and Electrical Behavior of Polyethylene Oxide-Based Solid Electrolytes for All-Solid State Lithium-Ion Batteries

Dense freeze‐cast Li₇La₃Zr₂O₁₂ solid electrolytes with oriented open porosity and contiguous ceramic scaffold

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Microstructure and temperature dependent lithium ion transport of ceramic–polymer composite electrolyte for solid-state lithium ion batteries based on garnet-type Li7La3Zr2O12

Cited by 87 publications

References 42 publications

A Crosslinked Polyethyleneglycol Solid Electrolyte Dissolving Lithium Bis(trifluoromethylsulfonyl)imide for Rechargeable Lithium Batteries

A Crosslinked Polyethyleneglycol Solid Electrolyte Dissolving Lithium Bis(trifluoromethylsulfonyl)imide for Rechargeable Lithium Batteries

Correlation of Mechanical and Electrical Behavior of Polyethylene Oxide-Based Solid Electrolytes for All-Solid State Lithium-Ion Batteries

Dense freeze‐cast Li7La3Zr2O12 solid electrolytes with oriented open porosity and contiguous ceramic scaffold

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Dense freeze‐cast Li₇La₃Zr₂O₁₂ solid electrolytes with oriented open porosity and contiguous ceramic scaffold