Electronic conductivity of Na β″-alumina ceramics at high temperatures

Fritz, Max; Barbosa, M. R.; Staikov, G.; Lorenz, W.J.; Steinbrück, M.; Knödler, Reinhard

doi:10.1016/0167-2738(93)90382-d

Cited by 10 publications

(5 citation statements)

References 7 publications

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“…Although this criterion corresponds roughly to the measured values at room temperature in this study (7 × 10 −11 S cm −1 , 12 mA cm −2 ), the electronic conductivity at 60 °C deviates by almost three orders of magnitude (7 × 10 −10 S cm −1 ) from this threshold, whereas the critical current densities improves by 30%. Furthermore, it was also shown that Na‐β″‐alumina can sustain critical current densities up to 300 mA cm −2 at 350 °C at an electronic conductivity of ≈10 −8 S cm −1 . It is clear that the ionic conductivity and charge transfer kinetics are also improved at the same time, and therefore a theory only based on the electronic conductivity cannot fully explain the temperature‐dependent CCD measurements.…”

Section: Resultsmentioning

confidence: 99%

Sodium Plating from Na‐β″‐Alumina Ceramics at Room Temperature, Paving the Way for Fast‐Charging All‐Solid‐State Batteries

Bay

Wang

Grissa

et al. 2019

Advanced Energy Materials

117

108

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All‐solid‐state batteries with an alkali metal anode have the potential to achieve high energy density. However, the onset of dendrite formation limits the maximum plating current density across the solid electrolyte and prevents fast charging. It is shown that the maximum plating current density is related to the interfacial resistance between the solid electrolyte and the metal anode. Due to their high ionic conductivity, low electronic conductivity, and stability against sodium metal, Na‐β″‐alumina ceramics are excellent candidates as electrolytes for room‐temperature all‐solid‐state batteries. Here, it is demonstrated that a heat treatment of Na‐β″‐alumina ceramics in argon atmosphere enables an interfacial resistance <10 Ω cm2 and current densities up to 12 mA cm−2 at room temperature. The current density obtained for Na‐β″‐alumina is ten times higher than that measured on a garnet‐type Li7La3Zr2O12 electrolyte under equivalent conditions. X‐ray photoelectron spectroscopy shows that eliminating hydroxyl groups and carbon contaminations at the interface between Na‐β″‐alumina and sodium metal is key to reach such values. By comparing the temperature‐dependent stripping/plating behavior of Na‐β″‐alumina and Li7La3Zr2O12, the role of the alkali metal in governing interface kinetics is discussed. This study provides new insights into dendrite formation and paves the way for fast‐charging all‐solid‐state batteries.

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Section: Resultsmentioning

confidence: 99%

Sodium Plating from Na‐β″‐Alumina Ceramics at Room Temperature, Paving the Way for Fast‐Charging All‐Solid‐State Batteries

Bay

Wang

Grissa

et al. 2019

Advanced Energy Materials

117

108

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“…This according to a critical assessment of literature data. 12,[33][34][35][36][37][38][39][40] is hardly a surprise bearing in mind that the nature of the ionic conduction itself has been uncertain up to the present. There are not even adequate clues in the literature about that the alkali carbonates would represent mixed ionic-electronic conductors which is why the topic may only be analyzed in analogy with other related materials.…”

Section: Electronic Conduction Parametersmentioning

confidence: 96%

“…Figure 5. Electronic conduction parameters a ⊕ and a for Na-beta-Al 2 O 3 according to a critical assessment of literature data 12,[33][34][35][36][37][38][39][40]. …”

mentioning

confidence: 99%

Electrochemical CO₂Separation through an Alkali-Carbonate-Based Membrane

Näfe

2013

ECS J. Solid State Sci. Technol.

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CO 2 permeation through an alkali carbonate-based membrane is interpreted as a combined absorption-desorption process driven by alkali ion diffusion in which the membrane material is actively involved by dissociation and re-formation. The relationships governing the gas permeation fluxes are derived for the most general case, on which basis the conditions for maximizing the CO 2 -to-O 2 separation factor are discussed in terms of the electronic conduction properties of the membrane material.

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“…In the case of Na–β‐alumina, the unit cell structures of both β‐Al 2 O 3 and βʺ‐Al 2 O 3 are comprised of the alternating stacks of conduction plane and spinal blocks, with the only difference of the Na‐ion concentration and stacking sequence of oxygen ion (Figure 2A). The β‐alumina offers Na ion transportation via 2D planes of closely packed oxygen and Na‐ions through interstitial pairs instead of vacancy movement, resulting in very low activation energy ( E a ∼ 0.12–0.27 eV) achieved for this system 26 . The original structure of β‐Al 2 O 3 belongs to a hexagonal structure with P 63/ mmc space group, and two loosely packed conduction planes per unit cell.…”

Section: Ceramic Electrolytementioning

confidence: 99%

“…The β-alumina offers Na ion transportation via 2D planes of closely packed oxygen and Na-ions through interstitial pairs instead of vacancy movement, resulting in very low activation energy (E a ∼ 0.12-0.27 eV) achieved for this system. 26 The original structure of β-Al 2 O 3 belongs to a hexagonal structure with P63/mmc space group, and two loosely packed conduction planes per unit cell. The βʺ-alumina follows rhombohedral symmetry with a space group R-3m.…”

Section: Ceramic Electrolytementioning

confidence: 99%

Overview and perspectives of solid electrolytes for sodium batteries

Vasudevan

Dwivedi

Balaya

2022

Int J Applied Ceramic Tech

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Quoting the abundance and cost of sodium reserve and robustly safe and high-energy solid electrolytes, sodium solid-state batteries (SSBs) exhibit huge promise for future energy storage applications compared to battery systems using organic liquid electrolytes and Li counterparts. However, the progress and application are still in infancy, experiencing numerous challenges for sodium SSBs due to inherent properties, interface complications, and fabrication. These are recently receiving unprecedented research attention by understanding and steadily resolving the issues associated with sodium SSBs. In this review, the governing bulk and interfacial issues and dynamics, background research correlations from Li counterparts, and strategies to address them are investigated for various ceramic-, polymer-, and ceramic-polymer composite based solid electrolytes. Particular attention is devoted to issues with ceramic electrolytes (such as interfacial stability, brittleness, porosity, and grain-grain boundary resistance) and polymer electrolytes (like dendrite formation, passivation layer, electrochemical instability, and ionic conductivity), and finally, robustness in overall performance and a few drawbacks (such as filler agglomeration, interface dynamics, and crack propagation) on the composited state-of-the-art ceramicpolymer electrolytes are highlighted. To end with, crucial inferences and future research perspectives are condensed on the development of enhanced solid electrolytes for sodium SSBs overcoming the shortcomings illustrated for different electrolytes.

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Electronic conductivity of Na β″-alumina ceramics at high temperatures

Cited by 10 publications

References 7 publications

Sodium Plating from Na‐β″‐Alumina Ceramics at Room Temperature, Paving the Way for Fast‐Charging All‐Solid‐State Batteries

Sodium Plating from Na‐β″‐Alumina Ceramics at Room Temperature, Paving the Way for Fast‐Charging All‐Solid‐State Batteries

Electrochemical CO₂Separation through an Alkali-Carbonate-Based Membrane

Overview and perspectives of solid electrolytes for sodium batteries

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Electronic conductivity of Na β″-alumina ceramics at high temperatures

Cited by 10 publications

References 7 publications

Sodium Plating from Na‐β″‐Alumina Ceramics at Room Temperature, Paving the Way for Fast‐Charging All‐Solid‐State Batteries

Sodium Plating from Na‐β″‐Alumina Ceramics at Room Temperature, Paving the Way for Fast‐Charging All‐Solid‐State Batteries

Electrochemical CO2Separation through an Alkali-Carbonate-Based Membrane

Overview and perspectives of solid electrolytes for sodium batteries

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Product

Resources

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Electrochemical CO₂Separation through an Alkali-Carbonate-Based Membrane