Three-dimensional (3D) porous NiCo2S4 nanonetworks were fabricated on nickel foam (NF) through an anion exchange reaction between NiCo2O4 nanosheets (hydrothermally grown on NF) and Na2S, and showed a very high specific capacitance of 1501.2 F g−1 at 1 A g−1 (even 2.5 times higher than that of NiCo2O4 nanosheets) and robust cycling stability for supercapacitors.
Y. Liu, J. Zhang, S. Wang, K. Wang, Z. Chen and Q. Xu, New J. Chem., 2014, 38, 4045 DOI: 10.1039/C4NJ00816B
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