Hexagonal Boron Nitride Decorated Polypropylene Separator for Dendritic Free Sodium Deposition and Stripping

Shubham Garg; Ankush Kumar Singh; Avanish Singh Parmar; Rosy

doi:10.1149/1945-7111/ad0c6c

Hexagonal Boron Nitride Decorated Polypropylene Separator for Dendritic Free Sodium Deposition and Stripping

Shubham Garg, Ankush Kumar Singh, Avanish Singh Parmar, Rosy

Banaras Hindu University

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

Abstract

Sodium metal, with its impressive electrochemical properties, including a high specific capacity of 1166 mAhg⁻¹ and a low redox potential of −2.71 V vs SHE, emerges as a compelling option for battery anodes. However, the dendrites formed during subsequent charging/discharging cycles severely limit its practical implementation. Here, we report the ability of hexagonal boron nitride (hBN) coated polypropylene separator to suppress the dendritic deposition. The tailored separator manifests improved wettability and stable electrochemical performance under limited Na availability. The improved performance is ascribed to the sodiophilic character of hBN, which is expected to provide uniform Na⁺ flux and exhibit a guiding effect for uniform Na deposition. This study aims to report the use of a hBN coated separator for mitigating Na dendrites; however, comprehensive research is required to properly evaluate the pragmatic application of the proposed strategy in metal batteries.

Original language	English
Article number	120513
Journal	Journal of the Electrochemical Society
Volume	170
Issue number	12
DOIs	https://doi.org/10.1149/1945-7111/ad0c6c
State	Published - Dec 2023
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2023 The Electrochemical Society (“ECS”). Published on behalf of ECS by IOP Publishing Limited.

Funding

S.G. and A.K.S. are thankful to UGC for awarding the Research Fellowship. Rosy is thankful to Science and Engineering Research Board (SERB), India for the start-up research grant (SRG/2021/000566) and MOE-STARS (2023-0213) for providing the funding to carry out this project. We owe a special acknowledgement to Dr. Udita Uday Ghosh and her group for helping us with the contact angle measurements. S.G. and A.K.S. are thankful to UGC for awarding the Research Fellowship. Rosy is thankful to Science and Engineering Research Board (SERB), India for the start-up research grant (SRG/2021/000566) and MOE-STARS (2023–0213) for providing the funding to carry out this project. We owe a special acknowledgement to Dr. Udita Uday Ghosh and her group for helping us with the contact angle measurements.

Funders	Funder number
MOE-STARS	2023-0213
University Grants Commission
Science and Engineering Research Board	SRG/2021/000566

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1149/1945-7111/ad0c6c

Cite this

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Hexagonal Boron Nitride Decorated Polypropylene Separator for Dendritic Free Sodium Deposition and Stripping

Abstract

Bibliographical note

Funding

UN SDGs

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