Sustainable Solid-State Sodium-Ion Batteries Featuring Ferroelectric Electrolytes

• Type: Article in International Scientific Journal
• Date: 2024

Authors

Ângela Freitas (Author) FEUP; M. C. Baptista (Author) FEUP; Maria Helena Braga (Author) FEUP

Journal

Title: International Journal Of Molecular Sciences

Vol. 25

ISSN: 1661-6596

Publisher: MDPI

Indexing

ISI Web of Knowledge - 0 Citations

ISI Web of Science

Scopus - 0 Citations

Associated Projects

LAETA2023 - Programático - ET - Emerging Technologies - LAETA2023 - Programático - ET - Emerging Technologies

CVB - CVB - Cadeia de Valor das Baterias em Portugal

NGS -New Generation Storage - NGS -New Generation Storage

RedoxMOFs - Redox-active Metal-Organic Frameworks as Electrode Materials for Lithium-Ion Batteries

Other information

Authenticus ID: P-017-KDN

DOI: 10.3390/ijms252312694

Abstract (EN): Solid-state batteries offer significant advantages but present several challenges. Given the complexity of these systems, it is good practice to begin the study with simpler models and progressively advance to more complex configurations, all while maintaining an understanding of the physical principles governing solid-state battery operation. The results presented in this work pertain to cells without traditional electrodes, thus providing a foundation for guiding the development of fully functional solid-state cells. The open circuit voltage (OCV) of the Cu/Na2.99Ba0.005ClO composite in a cellulose/Zn pouch cell achieves 1.10 V, reflecting the difference in the chemical potentials of the current collectors (CCs), Zn and Cu, serving as electrodes. After 120 days, while set to discharge, conversely to what was expected, a higher potential difference of 1.13 V was attained (capacity of 5.9 mAhg-1electrolyte). By incorporating a layer of carbon felt, the OCV became 0.85 V; however, after 95 days, the potential difference increased to 1.20 V. Ab initio simulations were additionally performed on a Cu/Na3ClO/Zn heterojunction showing the formation of dipoles and the Na deposition on Zn which is demonstrated experimentally. The sodium plating on the negative CC (Zn) takes place as the cell is set to discharge at room temperature but is not observed at 40 degrees C.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 23