Room temperature elastic moduli and Vickers hardness of hot-pressed LLZO cubic garnet

Ni, Jennifer E.; Case, Eldon D.; Sakamoto, Jeffrey; Rangasamy, Ezhiyl; Wolfenstine, J.

doi:10.1007/s10853-012-6687-5

Cited by 270 publications

(208 citation statements)

References 53 publications

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“…Dense LLZO type materials prepared by hot pressing techniques have been mechanically evaluated by ultrasound spectroscopy and indentation methods, 22,23 …”

Section: Solid Electrolyte Mechanical Considerationsmentioning

confidence: 99%

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Review—Practical Challenges Hindering the Development of Solid State Li Ion Batteries

Kerman

Luntz

Viswanathan

et al. 2017

J. Electrochem. Soc.

586

471

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Solid state electrolyte systems boasting Li + conductivity of >10 mS cm −1 at room temperature have opened the potential for developing a solid state battery with power and energy densities that are competitive with conventional liquid electrolyte systems. The primary focus of this review is twofold. First, differences in Li penetration resistance in solid state systems are discussed, and kinetic limitations of the solid state interface are highlighted. Second, technological challenges associated with processing such systems in relevant form factors are elucidated, and architectures needed for cell level devices in the context of product development are reviewed. Specific research vectors that provide high value to advancing solid state batteries are outlined and discussed. Solid state battery systems are of great interest because of potential benefits in gravimetric and volumetric energy density, operable temperature range, and safety in comparison to traditional liquid electrolyte based systems. However, unresolved fundamental issues remain in the quest to fully understand the behavior of all-solid batteries, especially in the area of electrochemical interfaces.1 There are also a number of significant engineering challenges that require methodical effort to enable a tangible product. Some transitions from academic laboratories to entrepreneurial efforts attempting to overcome these challenges remain unsuccessful in efforts to bring a product to the market.2,3 Vital parameters that require robust understanding from a product development standpoint are material cost, cell lifetime and shelf life, cell energy density on a volumetric and gravimetric basis, operable capabilities for given temperature conditions, and safety. The advantage of energy density remains to be realized in solid state electrolytes (SSEs) since most studies to date utilize thick SSEs or cathodes with low active loading compared to liquid counterparts. 4,5 Furthermore, the desire to use SSEs in conjunction with Li metal anodes requires understanding and managing the morphology of Li metal plating, which can impact volumetric energy density. Operation at both higher and lower temperature compared to conventional technologies is a significant potential advantage of SSE systems. However, reports of solid state cells achieving parity with traditional systems at room temperature or any other temperature do not currently exist. The safety, specifically decreased flammability, of SSE systems is another potential advantage but requires ongoing validation and study.6 Unlike current liquid electrolyte systems, 7 the manufacturability and material component costs of SSEs have not been well characterized, and thus the value of these features will need to be weighed accordingly with any added cost. Operating lifetime of SSEs capturing intrinsic materials parameters such as voltage stability, 8 as well as catastrophic failure modes such as shorting, 9 have been briefly investigated, but in the absence of high energy density electrode formulations and appli...

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“…Dense LLZO type materials prepared by hot pressing techniques have been mechanically evaluated by ultrasound spectroscopy and indentation methods, 22,23 …”

Section: Solid Electrolyte Mechanical Considerationsmentioning

confidence: 99%

“…Dense LLZO type materials prepared by hot pressing techniques have been mechanically evaluated by ultrasound spectroscopy and indentation methods, 22,23 and are found to exhibit an elastic modulus of 150 GPa and fracture toughness of 0. 86 of 40 GPa and fracture toughness of 0.37 MPa m 0.5 .…”

Section: Solid Electrolyte Mechanical Considerationsmentioning

confidence: 99%

Review—Practical Challenges Hindering the Development of Solid State Li Ion Batteries

Kerman

Luntz

Viswanathan

et al. 2017

J. Electrochem. Soc.

586

471

View full text Add to dashboard Cite

show abstract

“…Intimate contact with battery materials is therefore precluded due to the lack of plastic deformation under stress. [ 10 ] On the other hand, the sulfi de family of solid electrolytes, such as Li 10 MP 2 S 12 crystals and Li 2 S-P 2 S 5 glass ceramics, have lithium-ion conductivities comparable to liquid electrolytes, can be simply processed by cold-compacting the powders, and exhibit ductile-like mechanical properties. [ 3,11,12 ] Thus, the present study makes use of the sulfi de the development of malleable covalent network polymers, often called vitrimers.…”

Section: Doi: 101002/adma201502636mentioning

confidence: 99%

Ultra‐thin Solid‐State Li‐Ion Electrolyte Membrane Facilitated by a Self‐Healing Polymer Matrix

et al. 2015

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Thin solid membranes are formed by a new strategy, whereby an in situ derived self-healing polymer matrix that penetrates the void space of an inorganic solid is created. The concept is applied as a separator in an all-solid-state battery with an FeS2 -based cathode and achieves tremendous performance for over 200 cycles. Processing in dry conditions represents a paradigm shift for incorporating high active-material mass loadings into mixed-matrix membranes.

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“…11) In contrast, Young's moduli of sulfide solid electrolytes have never been reported; it is difficult to evaluate their mechanical properties because they are generally unstable in air. Recently, our group has succeeded in evaluating the elastic modulus of Li 2 SP 2 S 5 sulfide glass electrolytes in a previous report.…”

Section: )11)mentioning

confidence: 99%

Evaluation of young’s modulus of Li2S–P2S5–P2O5 oxysulfide glass solid electrolytes

Kato

Nagao

Sakuda

et al. 2014

J. Ceram. Soc. Japan

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Mechanical properties such as elastic modulus of solid electrolytes are important for all-solid-state batteries. To investigate the effects of a partial substitution of oxide for sulfide on Young's modulus, 70Li 2 S·(30 ¹ x)P 2 S 5 ·xP 2 O 5 (mol %) (x = 0, 3 and 10) oxysulfide glasses were prepared and characterized. Young's moduli were measured by ultrasonic pulse echo method for the dense pellets prepared by hot pressing at around glass transition temperature. The Young's moduli of 70Li 2 S·(30 ¹ x)P 2 S 5 ·xP 2 O 5 glasses were 2227 GPa and increased with an increase in the P 2 O 5 content. The highest Young's modulus in this report was 27 GPa for the glass with 10 mol % P 2 O 5 .

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Room temperature elastic moduli and Vickers hardness of hot-pressed LLZO cubic garnet

Cited by 270 publications

References 53 publications

Review—Practical Challenges Hindering the Development of Solid State Li Ion Batteries

Review—Practical Challenges Hindering the Development of Solid State Li Ion Batteries

Ultra‐thin Solid‐State Li‐Ion Electrolyte Membrane Facilitated by a Self‐Healing Polymer Matrix

Evaluation of young’s modulus of Li<sub>2</sub>S–P<sub>2</sub>S<sub>5</sub>–P<sub>2</sub>O<sub>5</sub> oxysulfide glass solid electrolytes

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