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In Situ TEM Study of Structural Changes in Na-β″-Alumina Using Electron Beam Irradiation.

ABSTRACT: Real-time structural changes in Na-β″-alumina were observed in situ using transmission electron microscopy (TEM) with electron beam irradiation. Na-β″-alumina has been widely investigated as a solid electrolyte material for sodium-sulfur secondary batteries owing to its high ionic conductivity. This high conductivity is known to be due to the Na+ ions on the loosely packed conduction planes of Na-β″-alumina. In the present study, we acquired real-time videos of the generation of spinel blocks caused by the conduction of Na+ ions. In addition, by observing Na extraction during electron beam irradiation, we experimentally confirmed that spinel block generation originates from the Na+ ion conduction, which has been a subject of recent debate.

SUBMITTER: Kim SD

PROVIDER: S-EPMC9000304 | biostudies-literature | 2022 Apr

REPOSITORIES: biostudies-literature

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In Situ TEM Study of Structural Changes in Na-β″-Alumina Using Electron Beam Irradiation.

Kim Sung-Dae SD Kim Young-Woon YW

Materials (Basel, Switzerland) 20220405 7

Real-time structural changes in Na-β″-alumina were observed in situ using transmission electron microscopy (TEM) with electron beam irradiation. Na-β″-alumina has been widely investigated as a solid electrolyte material for sodium-sulfur secondary batteries owing to its high ionic conductivity. This high conductivity is known to be due to the Na+ ions on the loosely packed conduction planes of Na-β″-alumina. In the present study, we acquired real-time videos of the generation of spine ...[more]

PMID: 35407995

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