Cork: Enabler of sustainable and efficient coaxial structural batteries

• Type: Article in International Scientific Journal
• Date: 2023-04-08

Authors

Mafalda Valente (Author) Other; Sara Magalhães Silva (Author) Other; Maria Helena Braga (Author) FEUP

Journal

Title: Heliyon

Vol. 9

ISSN: 2405-8440

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 0 Citations

ISI Web of Science

Scopus

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Scientific classification

CORDIS: Physical sciences

FOS: Engineering and technology

Associated Projects

MatER - MatER - Materials for Energy Research Group

NGS -New Generation Storage - NGS -New Generation Storage

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

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

Other information

Authenticus ID: P-00Y-71N

DOI: 10.1016/j.heliyon.2023.e15063

Abstract (EN): Structural batteries aim to advance to 'massless' energy storage units. Here we report an electrode-less coaxial battery with a cork-internal shell, CFRP(+)/cork/Cu/Na2.99Ba0.005ClO/Al (-), where CFRP is carbon fiber reinforced polymer. The cell may, alternatively, solely have a cork external shell cork/Cu(+)/Na2.99Ba0.005ClO/Al(-). Cork is a cellular material with a negative CO2 footprint, light, elastic, impermeable to gases or liquids, and an excellent thermal insulator. Cork was used tandemly with a CFRP shell, working as the positive current collector to enhance the structural batteries' properties while allowing a giant electrostatic performance in conjunction with the Na+ solid-state ferroelectric injected between the Al negative collector and the cork. Cork was shown a polar dielectric. This 'minimalist' cell may perform without copper making the cells even more sustainable. Neither cells contain traditional electrodes, only one or two current collectors. The cells perform from 0 to >50 degrees C. The maximum capacity of the cork/Cu (+)/Na2.99Ba0.005ClO/Al(-) cells is similar to 110 mAh.cm(-2) (outer shell) with <I> approximate to 90 mu A cm(-2), <V> approximate to 0.90 V, V-max approximate to 1.1-1.3 V, I-max approximate to 108 mu A cm(-2), and a constant resistance discharging life (>40 days). The novel family of cells presented may also harvest waste heat and thermal energy at a constant temperature as their potential and current increase with temperature. Conversely, rising potentials boost the cells' temperature, as expected from pyroelectrics, as shown herein.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 9