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Rechargeable-battery Chemistry Based on Lithium Oxide Growth Through Nitrate Anion Redox

Vincent Giordani, Dylan Tozier, Jasim Uddin, Hongjin Tan, Betar M Gallant, Bryan D McCloskey, Julia R Greer, Gregory V Chase, Dan Addison

Nat Chem. 2019 Dec;11(12):1133-1138.

PMID: 31591507

Abstract:

Next-generation lithium-battery cathodes often involve the growth of lithium-rich phases, which enable specific capacities that are 2-3 times higher than insertion cathode materials, such as lithium cobalt oxide. Here, we investigated battery chemistry previously deemed irreversible in which lithium oxide, a lithium-rich phase, grows through the reduction of the nitrate anion in a lithium nitrate-based molten salt at 150 °C. Using a suite of independent characterization techniques, we demonstrated that a Ni nanoparticle catalyst enables the reversible growth and dissolution of micrometre-sized lithium oxide crystals through the effective catalysis of nitrate reduction and nitrite oxidation, which results in high cathode areal capacities (~12 mAh cm-2). These results enable a rechargeable battery system that has a full-cell theoretical specific energy of 1,579 Wh kg-1, in which a molten nitrate salt serves as both an active material and the electrolyte.

Chemicals Related in the Paper:

Catalog Number Product Name Structure CAS Number Price
AP12057248 Lithium oxide Lithium oxide 12057-24-8 Price
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