Alumina thin coat on pre-charged soft carbon anode reduces electrolyte breakdown and maintains sodiation sites active in Na-ion battery – Insights from NMR measurements

Shaul Bublil; Nicole Leifer; Raju Nanda; Yuval Elias; Miryam Fayena-Greenstein; Doron Aurbach; Gil Goobes

doi:10.1016/j.jssc.2021.122121

Alumina thin coat on pre-charged soft carbon anode reduces electrolyte breakdown and maintains sodiation sites active in Na-ion battery – Insights from NMR measurements

Shaul Bublil
, Nicole Leifer
, Raju Nanda
, Yuval Elias
, Miryam Fayena-Greenstein
, Doron Aurbach
, Gil Goobes

Bar-Ilan University

Research output: Contribution to journal › Article › peer-review

14 Scopus citations

Abstract

Atomic deposition of a thin layer of alumina on amorphous carbon materials was recently established to improve their electrochemical properties as anodes in sodium-ion batteries. It is shown that the highest performance for these materials can be achieved by pre-sodiation of the electrode before coating it. The basis for the enhanced performance is illuminated by ¹³C and ²³Na MAS NMR analysis showing that this specific procedure diminishes parasitic reactions and preserves reversible access to active sodiation sites.

Original language	English
Article number	122121
Journal	Journal of Solid State Chemistry
Volume	298
DOIs	https://doi.org/10.1016/j.jssc.2021.122121
State	Published - Jun 2021

Bibliographical note

Publisher Copyright:
© 2021 Elsevier Inc.

Funding

The authors thank Dr. Malachi Noked for fruitful discussion of the electrochemical work reported. D. A. gratefully acknowledges funding from the Israel Committee for High Education and Israel Prime Minister Office in the framework of the INREP project and from the Israel Science Foundation (ISF) . S. B. thanks the PhD scholarship of the Israeli Scholarship Education Foundation (ISEF) for excellence in academic and social leadership.

Funders
Israel Committee for High Education and Israel Prime Minister Office
Israeli Scholarship Education Foundation
Israel Science Foundation

Keywords

Alumina coating
Carbon anodes
Pre-sodiation
Sodium-ion batteries
Solid-state NMR

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10.1016/j.jssc.2021.122121

Cite this

Bublil, S., Leifer, N., Nanda, R., Elias, Y., Fayena-Greenstein, M., Aurbach, D., & Goobes, G. (2021). Alumina thin coat on pre-charged soft carbon anode reduces electrolyte breakdown and maintains sodiation sites active in Na-ion battery – Insights from NMR measurements. Journal of Solid State Chemistry, 298, Article 122121. https://doi.org/10.1016/j.jssc.2021.122121

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Alumina thin coat on pre-charged soft carbon anode reduces electrolyte breakdown and maintains sodiation sites active in Na-ion battery – Insights from NMR measurements

Abstract

Bibliographical note

Funding

Keywords

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