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Issue 6, 2018
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Thiacalix[4]arene-supported tetradecanuclear cobalt nanocage cluster as precursor to synthesize CoO/Co9S8@CN composite for supercapacitor application

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Abstract

A new tetradecanuclear cobalt cluster [Co14(TC4A)3Cl3(Tz)12(H2O)6](OH)(DMF)14(CH3OH)6(H2O)4 (Abbr. Co14, H4TC4A = p-tert-Butylthiacalix[4]arene, HTz = 1H-tetrazole) was obtained by the solvothermal reaction of CoCl2·6H2O, H4TC4A and Htz in DMF. The cluster featured the quadrilateral planar CoII4 units housing tri-capped trigonal Co12 clusters with two enclosed Co nanocages linked by Tz ligands. The uniform CoO/Co9S8@CN composite derived from direct annealing of Co14 clusters was obtained and characterized by XRD, EDS, XPS, and Raman spectra. The composite on nickel foam (CoO/Co9S8@CN/NF) was used as an electrode to fabricate supercapacitors with specific capacitances of 83.7% at 2 A g−1 and 70.0% at 5 A g−1 at 0.5 A g−1 (303.3 F g−1). The composite from Co14 precursor also shows high charge–discharge reversibility with a capacity retention of 96.3% and average columbic efficiency of 98.2% after 1000 cycles at 2.0 A g−1.

Graphical abstract: Thiacalix[4]arene-supported tetradecanuclear cobalt nanocage cluster as precursor to synthesize CoO/Co9S8@CN composite for supercapacitor application

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Publication details

The article was received on 26 Feb 2018, accepted on 02 Apr 2018 and first published on 03 Apr 2018


Article type: Research Article
DOI: 10.1039/C8QI00178B
Citation: Inorg. Chem. Front., 2018,5, 1329-1335
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    Thiacalix[4]arene-supported tetradecanuclear cobalt nanocage cluster as precursor to synthesize CoO/Co9S8@CN composite for supercapacitor application

    C. Shi, M. Chen, X. Han, Y. Bi, L. Huang, K. Zhou and Z. Zheng, Inorg. Chem. Front., 2018, 5, 1329
    DOI: 10.1039/C8QI00178B

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