Abstract
In this work, we proposed a facile and scalable template-free strategy to synthesize one-dimensional (1D) ultralayered mesoporous nickel cobaltite (NiCo2O4) nanowires (NWs), which are constructed from lots of quasi-single-crystalline NiCo2O4 nanosheet building blocks. The unique ultralayered mesoporous nanowire electrode exhibited high specific capacitance (401 F g−1 at 1 A g−1), good rate capability (75% capacity retention at 8 A g−1) and excellent cycling stability (only ca. 10% loss after 5000 cycles), exhibiting its great potential application in high-performance electrochemical capacitors as an advanced electrode material. The desirable capacitive performance is mainly attributed to its binary electroactive sites of Co and Ni species, and its intriguing ultralayered mesoporous NWs features.
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