A rechargeable Na–CO 2 /O 2 battery enabled by stable nanoparticle hybrid electrolytes
KAUST Grant NumberKUS-C1-018-02
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Abstract© the Partner Organisations 2014. We report on rechargeable batteries that use metallic sodium as the anode, a mixture of CO2 and O2 as the active material in the cathode, and an organic-inorganic hybrid liquid as electrolyte. The batteries are attractive among energy storage technologies because they provide a mechanism for simultaneously capturing CO2 emissions while generating electrical energy. Through in and ex situ chemical analysis of the cathode we show that NaHCO3 is the principal discharge product, and that its relative instability permits cell recharging. By means of differential electrochemical mass spectrometry (DEMS) based on 12C and 13C we further show that addition of as little as 10% of 1-methyl-3-propylimidazolium bis(trifluoromethanesulfone)imide ionic liquid tethered to SiO2 nanoparticles extends the high-voltage stability of the electrolyte by at least 1 V, allowing recharge of the Na-CO2/O2 cells. This journal is
CitationXu S, Lu Y, Wang H, Abruña HD, Archer LA (2014) A rechargeable Na–CO 2 /O 2 battery enabled by stable nanoparticle hybrid electrolytes . J Mater Chem A 2: 17723–17729. Available: http://dx.doi.org/10.1039/c4ta04130e.
SponsorsThis work was supported by the National Science Foundation, Award no. DMR-1006323 and by Award no. KUS-C1-018-02, made by King Abdullah University of Science and Technology (KAUST). Facilities available though the Cornell Center for Materials Research (CCMR) were used for this study (DMR-1120296). The authors thank Dr Ivan Keresztes for the help with the NMR analysis.
PublisherRoyal Society of Chemistry (RSC)
JournalJ. Mater. Chem. A