Carbon dioxide assist for non-aqueous sodium–oxygen batteries

Shyamal K. Das, Shaomao Xu, Lynden A. Archer

Research output: Contribution to journalArticlepeer-review

77 Scopus citations

Abstract

We report a novel non-aqueous Na-air battery that utilizes a gas mixture of CO2 and O2. The battery exhibits a high specific energy of 6500-7000 Whkg- 1 (based on the carbon mass) over a range of CO2 feed compositions. The energy density achieved is higher, by 200% to 300%, than that obtained in pure oxygen. Ex-situ FTIR and XRD analysis reveal that Na2O2, Na2C2O 4 and Na2CO3 are the principal discharge products. The Na-CO2/O2 and Mg-CO2/O 2 battery platforms provide a promising, new approach for CO 2 capture and generation of electrical energy. © 2012 Elsevier B.V. All rights reserved.
Original languageEnglish (US)
Pages (from-to)59-62
Number of pages4
JournalElectrochemistry Communications
Volume27
DOIs
StatePublished - Feb 2013
Externally publishedYes

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