Journal
BATTERIES & SUPERCAPS
Volume 5, Issue 1, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/batt.202100131
Keywords
doping; interfaces; Na-ion positive electrodes; sodium-beta alumina; sodium solid-state batteries
Funding
- Landesgraduiertenakademie of the Friedrich-Schiller-University Jena
- Federal Ministry of Education and Research (BMBF) [03XP0187D]
- Thuringer Ministerium fur Wirtschaft, Wissenschaft und Digitale Gesellschaft (TMWWDG)
- Thuringer Aufbaubank (TAB) [2017 FGR 0055]
- Projekt DEAL
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Sodium-based batteries are a promising technology due to the unique properties of sodium-beta alumina and the potential for solid-state cell concept. Recent progress in fabrication and doping methods of sodium-beta alumina have been significant, along with achievements in designing full cells. This review demonstrates the potential prospects of using sodium-beta alumina for the development of solid-state batteries.
Sodium-based batteries are promising post lithium-ion technologies because sodium offers a specific capacity of 1166 mAhg(-1) and a potential of 2.71 V vs. the standard hydrogen electrode. The solid electrolyte sodium-beta alumina shows a unique combination of properties because it exhibits high ionic conductivity, as well as mechanical stability and chemical stability against sodium. Pairing a sodium negative electrode and sodium-beta alumina with Na-ion type positive electrodes, therefore, results in a promising solid-state cell concept. This review highlights the opportunities and challenges of using sodium-beta alumina in batteries operating from medium- to low-temperatures (200 degrees C-20 degrees C). Firstly, the recent progress in sodium-beta alumina fabrication and doping methods are summarized. We discuss strategies for modifying the interfaces between sodium-beta alumina and both the positive and negative electrodes. Secondly, recent achievements in designing full cells with sodium-beta alumina are summarized and compared. The review concludes with an outlook on future research directions. Overall, this review shows the promising prospects of using sodium-beta alumina for the development of solid-state batteries.
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