Stability of organic Na-ion battery electrode materials: The case of disodium pyromellitic diimidate
2014 (English)In: Electrochemistry communications, ISSN 1388-2481, E-ISSN 1873-1902, Vol. 45, 52-55 p.Article in journal (Refereed) Published
A novel organic Na-salt is presented here for utilization as an active electrode material in rechargeable Na-ion batteries. The compound, disodium pyromellitic diimidate, is synthesized through a reaction by pyromellitic acid and sodium hydride and characterized using H-1-NMR. Na-batteries of the organic compound were able to obtain capacity values close to the theoretical during the first cycles, but a steady capacity decrease could be observed during cycling. The battery nevertheless delivered a capacity of ca 90 mAh/g after 100 cycles, rendering it a comparatively competitive organic Na-battery material. However, the results stress the importance of tailoring Na-compounds with a good chemical stability also at high levels of sodiation, since decomposition side-reactions can be probable.
Place, publisher, year, edition, pages
2014. Vol. 45, 52-55 p.
Na-ion batteries, Organic electrode materials, N-cyclic structures, Pyromellitic diimidate
IdentifiersURN: urn:nbn:se:uu:diva-230068DOI: 10.1016/j.elecom.2014.05.012ISI: 000339035700013OAI: oai:DiVA.org:uu-230068DiVA: diva2:743246