Humidity-Induced Degradation of Lithium-Stabilized Sodium-Beta Alumina Solid Electrolytes

Fertig, Micha P.; Dirksen, Cornelius; Schulz, Matthias; Stelter, Michael

doi:10.3390/batteries8090103

Cited by 5 publications

(9 citation statements)

References 46 publications

(109 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…validating the results from Bay et al 22,44 Thus, it enables facile redox reactions at the interface during cycling. Outstanding stability over 1000 h and similar cycling conditions have been shown only with costly Sn interlayers in a Na|BASE|Na symmetric cell by now.…”

Section: Resultssupporting

confidence: 77%

See 1 more Smart Citation

A Medium-Temperature All-Solid-State Sodium Battery Utilizing Sodium-Beta Alumina and a Polymeric Composite Positive Electrode

Fertig

Skadell

Wegner³

et al. 2023

J. Electrochem. Soc.

Self Cite

View full text Add to dashboard Cite

Li-ion batteries often use transition metal oxide (TMO) positive electrodes. Sodium-based analogs are also an excellent option for all-solid-state sodium-based batteries. However, combining TMOs with solid electrolytes is challenging, both being rigid in nature. In this work, we use a polymeric secondary electrolyte to combine a sodium manganese oxide composite positive electrode with a sodium-beta alumina solid electrolyte (BASE) to an all-solid-state sodium battery. The composite electrode exhibits intimate interface contact with the solid electrolyte and well-established intra-electrode conduction pathways because mechanical flexible poly(ethylene oxide) acts as an ionically conducting auxiliary agent. The composite electrode shows an ionic conductivity of 5.5∙10-6 S cm-1 at 80°C. The careful co-treatment of the Na|BASE interface, resulting in a superior cycling stability of 1000 h at 0.35 mA cm-2 in a symmetric cell, enhances sodium´s wettability to the BASE surface. The full cell achieves an initial discharge capacity of 80 mAh g-1 at an average voltage of 2.78 V vs. Na+/Na, corresponding to a specific energy of 155 Wh kg-1 (positive electrode). Hence, we provide a proof-of-concept for all-solid-state cells, which paves the way for numerous combinations of well-conducting polymeric secondary electrolytes with TMO active materials and BASE.

show abstract

Section: Resultssupporting

confidence: 77%

“…67 Li 0.33 O 17 , we followed the procedure described in previous work. 22 BASEs of 314 mm 2 (d = 20 mm) x 1.3 mm were obtained. We sanded the specimens to remove excess powder and to reduce the height to 500 μm.…”

Section: Methodsmentioning

confidence: 99%

A Medium-Temperature All-Solid-State Sodium Battery Utilizing Sodium-Beta Alumina and a Polymeric Composite Positive Electrode

Fertig

Skadell

Wegner³

et al. 2023

J. Electrochem. Soc.

Self Cite

View full text Add to dashboard Cite

show abstract

“…We obtained the disk-shaped sodium-beta alumina solid electrolytes (BASE, d = 20 mm) following a solid-state reaction procedure described in previous work. 37 Before application, BASE was thoroughly dried at 650 °C to remove superficially adsorbed residues.…”

Section: Methodsmentioning

confidence: 99%

“…Contrary to interphases, they assumed that the increase in resistivity stems from water impurities in the organic solvent, 51,52 an effect we recently conrmed for humid atmospheres. 37 3.4. Monitoring resistance evolutions using three-electrode measurements…”

Section: Post-cycling Analysis Of the Nac Systemmentioning

confidence: 99%

Modulating the cathode interface in sodium-beta alumina-based semi-solid-state sodium cells using liquid-organic electrolytes

Fertig,

Neumann,

Schulz

et al. 2024

Sustainable Energy Fuels

Self Cite

View full text Add to dashboard Cite

show abstract

“…However, the synthesis of BASE involves several processing steps. Temperatures higher than 1500 °C are required to sinter, and additives are needed to stabilize higher conducting polymorph of BASE. , It is also highly sensitive to water or water vapors. , On the other hand, the ionic conductivity of NZPS-based compounds ranges from 10 –3 to 10 –4 S cm –1 at RT . Similar to BASE, they exhibit high stability against Na-metal and impressive stability against moisture .…”

Section: Introductionmentioning

confidence: 99%

Reinvestigation of Na₅GdSi₄O₁₂: A Potentially Better Solid Electrolyte than Sodium β Alumina for Solid-State Sodium Batteries

Michalak,

Behara,

2024

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

Developing high-performing solid electrolytes that could replace flammable organic liquid electrolytes is vital in designing safer solid-state batteries. Among the sodium-ion (Na + ) conducting solid electrolytes, Na-β″-alumina (BASE) is highly regarded for its employment in solid-state battery applications due to its high ionic conductivity and electrochemical stability. BASE has long been employed in commercial Na−NiCl 2 and Na−S batteries. However, the synthesis of highly conductive BASE is energy-intensive, involving elevated temperatures for sintering and the incorporation of stabilizing additives. Additionally, BASE is highly sensitive to humidity, which limits its applications. Hence, there is an intense search to identify suitable high-performing solid electrolytes that could replace BASE. In this context, we reinvestigated Na 5 GdSi 4 O 12 (NGS) and demonstrated that phase pure NGS could be synthesized by a simple solid-state reaction. Beyond a high ionic conductivity of 1.9 × 10 −3 S cm −1 at 30 °C (1.5 × 10 −3 S cm −1 for BASE), NGS exhibited high chemical as well as electrochemical stability, lower interfacial resistance, lower deposition and stripping potential, and higher short-circuiting current, designating NGS as a better solid electrolyte than BASE.

show abstract

Humidity-Induced Degradation of Lithium-Stabilized Sodium-Beta Alumina Solid Electrolytes

Cited by 5 publications

References 46 publications

A Medium-Temperature All-Solid-State Sodium Battery Utilizing Sodium-Beta Alumina and a Polymeric Composite Positive Electrode

A Medium-Temperature All-Solid-State Sodium Battery Utilizing Sodium-Beta Alumina and a Polymeric Composite Positive Electrode

Modulating the cathode interface in sodium-beta alumina-based semi-solid-state sodium cells using liquid-organic electrolytes

Reinvestigation of Na₅GdSi₄O₁₂: A Potentially Better Solid Electrolyte than Sodium β Alumina for Solid-State Sodium Batteries

Contact Info

Product

Resources

About

Humidity-Induced Degradation of Lithium-Stabilized Sodium-Beta Alumina Solid Electrolytes

Cited by 5 publications

References 46 publications

A Medium-Temperature All-Solid-State Sodium Battery Utilizing Sodium-Beta Alumina and a Polymeric Composite Positive Electrode

A Medium-Temperature All-Solid-State Sodium Battery Utilizing Sodium-Beta Alumina and a Polymeric Composite Positive Electrode

Modulating the cathode interface in sodium-beta alumina-based semi-solid-state sodium cells using liquid-organic electrolytes

Reinvestigation of Na5GdSi4O12: A Potentially Better Solid Electrolyte than Sodium β Alumina for Solid-State Sodium Batteries

Contact Info

Product

Resources

About

Reinvestigation of Na₅GdSi₄O₁₂: A Potentially Better Solid Electrolyte than Sodium β Alumina for Solid-State Sodium Batteries