Na2FeP2O7: a safe cathode for rechargeable sodium-ion batteries

dc.contributor.authorBarpanda, Pen_AU
dc.contributor.authorLiu, Gen_AU
dc.contributor.authorLing, CDen_AU
dc.contributor.authorTamaru, Men_AU
dc.contributor.authorAvdeev, Men_AU
dc.contributor.authorChung, SCen_AU
dc.contributor.authorYamada, Yen_AU
dc.contributor.authorYamada, Aen_AU
dc.date.accessioned2014-06-26T03:58:21Zen_AU
dc.date.available2014-06-26T03:58:21Zen_AU
dc.date.issued2013-09-10en_AU
dc.date.statistics2014-06-26en_AU
dc.description.abstractVying for newer sodium-ion chemistry for rechargeable batteries, Na2FeP2O7 pyrophosphate has been recently unveiled as a 3 V high-rate cathode. In addition to its low cost and promising electrochemical performance, here we demonstrate Na2FeP2O7 as a safe cathode with high thermal stability. Chemical/electrochemical desodiation of this insertion compound has led to the discovery of a new polymorph of NaFeP2O7. High-temperature analyses of the desodiated state NaFeP2O7 show an irreversible phase transition from triclinic (P (1) over bar) to the ground state monoclinic (P2(1)/c) polymorph above 560 degrees C. It demonstrates high thermal stability, with no thermal decomposition and/or oxygen evolution until 600 degrees C, the upper limit of the present investigation. This high operational stability is rooted in the stable pyrophosphate (P2O7)(4-) anion, which offers better safety than other phosphate-based cathodes. It establishes Na2FeP2O7 as a safe cathode candidate for large-scale economic sodium-ion battery applications. © 2013, American Chemical Society.en_AU
dc.identifier.citationBarpanda, P., Liu, G. D., Ling, C. D., Tamaru, M., Avdeev, M., Chung, S. C., Yamada, Y., & Yamada, A. (2013). Na2FeP2O7: a safe cathode for rechargeable sodium-ion batteries. Chemistry of Materials, 25(17), 3480-3487. doi:10.1021/cm401657cen_AU
dc.identifier.govdoc5440en_AU
dc.identifier.issn0897-4756en_AU
dc.identifier.issue17en_AU
dc.identifier.journaltitleChemistry of Materialsen_AU
dc.identifier.pagination3480-3487en_AU
dc.identifier.urihttp://dx.doi.org/10.1021/cm401657cen_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/5722en_AU
dc.identifier.volume25en_AU
dc.language.isoenen_AU
dc.publisherAmerican Chemical Societyen_AU
dc.subjectLithiumen_AU
dc.subjectCathodesen_AU
dc.subjectCrystalsen_AU
dc.subjectChemistryen_AU
dc.subjectIronen_AU
dc.subjectSodiumen_AU
dc.titleNa2FeP2O7: a safe cathode for rechargeable sodium-ion batteriesen_AU
dc.typeJournal Articleen_AU
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