Despite significant progresses in the development for high-performance supercapacitors, it lacks techniques to realize the full potential of electrode material by achieving simultaneously tailored pore structure, electrode conductivity, and crystallinity. Moreover, the problem of being difficult for electrodes to scale up with high active mass loading still exists. For an attempt to address all these issues, we recently developed highly ordered mesoporous nickel cobaltite supercapacitor electrodes with simultaneously tailored pore size dispersion, electrode conductivity, and crystallinity for achieving high-performance. The high specific capacitance of about 612 F/g and power density of 10 kW/kg were simultaneous achieved. The capability of high active mass loading (> 10 mg/cm2) enables the feasibility for such electrodes being used in practical devices. The principles illustrated as the motivation of the present work are believed to be able to serve as guidelines for designing future high-performance electrodes.

Ordered mesoporous nickel cobaltite spinel with ultrahigh supercapacitance: Nanomaterials for energy storage

245th National Meeting (2013)

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