Tailoring composite gel polymer electrolytes with regularly arranged pores and silica particles for sodium metal batteries via breath-figure self-assembly

Literature Information

Publication Date 2023-12-12
DOI 10.1039/D3TA06300C
Impact Factor 12.732
Authors

Daun Jeong, Wonyoung Chang, Joona Bang


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Abstract

Sodium (Na) metal batteries offer a promising alternative to lithium (Li) counterparts, leveraging the abundant and cost-effective nature of Na metal. However, the development of optimized separators and polymer electrolytes remains essential for Na metal systems. Herein, we propose a novel approach to prepare composite gel polymer electrolytes by embedding regularly distributed silica particles within a porous poly(vinylidene fluoride-co-hexafluoropropylene) (PVH) matrix through static breath-figure self-assembly. This method enables the incorporation of high silica particle loadings, up to 70 wt%, ensuring thermal and mechanical stability, high ionic conductivity, and effective suppression of Na dendrite formation. Post-mortem analyses, employing in-depth X-ray photoelectron spectroscopy (XPS) and time-of-flight secondary ion mass spectrometry (TOF-SIMS), offer valuable insights into how these composite gel polymer electrolytes influence the cycling performance of Na metal batteries. This study presents a straightforward and efficient strategy for fabricating composite gel polymer electrolytes to enhance the performance of Na metal batteries.

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Journal of Materials Chemistry A

Journal of Materials Chemistry A
CiteScore: 19.5
Self-citation Rate: 4.7%
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