Title
Design of new electrode materials for Li-ion and Na-ion batteries from the bloedite mineral <tex>$Na_{2}Mg(SO_{4})_{2}\cdot4H_{2}O$</tex> Design of new electrode materials for Li-ion and Na-ion batteries from the bloedite mineral <tex>$Na_{2}Mg(SO_{4})_{2}\cdot4H_{2}O$</tex>
Author
Faculty/Department
Faculty of Sciences. Physics
Publication type
article
Publication
Cambridge ,
Subject
Physics
Chemistry
Engineering sciences. Technology
Source (journal)
Journal of materials chemistry A : materials for energy and sustainability / Royal Society of Chemistry. - Cambridge, 2013, currens
Volume/pages
2(2014) :8 , p. 2671-2680
ISSN
2050-7488
2050-7496
ISI
000331247500031
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
Mineralogy offers a large database to search for Li- or Na-based compounds having suitable structural features for acting as electrode materials, LiFePO4 being one example. Here we further explore this avenue and report on the electrochemical properties of the bloedite type compounds Na2M(SO4)(2)center dot 4H(2)O (M = Mg, Fe, Co, Ni, Zn) and their dehydrated phases Na2M(SO4)(2) (M = Fe, Co), whose structures have been solved via complementary synchrotron X-ray diffraction, neutron powder diffraction and transmission electron microscopy. Among these compounds, the hydrated and anhydrous iron-based phases show electrochemical activity with the reversible release/uptake of 1 Na+ or 1 Li+ at high voltages of similar to 3.3 V vs. Na+/Na-0 and similar to 3.6 V vs. Li+/Li-0, respectively. Although the reversible capacities remain lower than 100 mA h g(-1), we hope this work will stress further the importance of mineralogy as a source of inspiration for designing eco-efficient electrode materials.
E-info
https://repository.uantwerpen.be/docman/iruaauth/89f9c7/4347215.pdf
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