A cost-effective supercapacitor material of ultrahigh specific capacitances: spinel nickel cobaltite aerogels from an epoxide-driven sol-gel process

Abstract

(figure presented)Nickel cobaltite (NiCo2O4) aerogels, synthesized with a chloride-based epoxide-driven sol-gel process, exhibit ultrahigh specific capacitances (1400F g-1; see figure), excellent reversibility, and outstanding cycle stability, at a relatively high mass loading of 0.4 mg cm-2.© 2010 WILEY-VCH Verlag GmbH & Co. KCaA.