Carbon Dioxide Assist for Non-aqueous Sodium-oxygen Batteries
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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, Na2C2O4 and Na2CO3 are the principal discharge products. The Na–CO2/O2 and Mg–CO2/O2 battery platforms provide a promising, new approach for CO2 capture and generation of electrical energy.
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This work was supported in part by Energy Materials Center at Cornell (award no. DE-SC0001086), and by award no. KUS-C1-018-02 made through King Abdullah University of Science and Technology (KAUST).
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2013-02-10
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Electrochemistry Communications
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Sodium air battery; Magnesium air battery
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Das, Shyamal K., Shaomao Xu, and Lynden A. Archer. "Carbon Dioxide Assist for Non-aqueous Sodium–oxygen Batteries." Electrochemistry Communications: 59-62. Print.
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