Publikacja Katedry w czasopiśmie Ceramics International

Gratulujemy prof. Andrzejowi Sikora oraz innym współautorom opublikowania pracy "Hierarchical framework of CoZnS as a high-performance electrode material for supercapacitors" wydanej w czasopiśmie Ceramics International (IF=5,532). Wszystkim życzymy dalszych sukcesów naukowych.

Hierarchical framework of CoZnS as a high-performance electrode material for supercapacitors

G.T. Chavan, A. Sikora, R.C. Pawar, J. Warycha, P.J. Morankar, Chan-Wook Jeon

Efficient renewable energies are needed to meet the energy demands of modernized civilization. Therefore, this study evaluated composite Co1-xZnxS (0.04 ≤ x ≤ 0.34) (CZS-1 to CZS-6) thin film electrodes produced using a chemical growth approach as effective energy storage devices. Systematic integration of Zn2+ in the CoS host formed the polycrystalline Co0.24SZn0.76 (cubic) phase. The electrochemical measurements revealed a high diffusion rate and low series resistance, resulting in an excellent specific capacitance (Cs) of 1288 F g-2 1 at a current density of 2 mA cm-2 2 with better rate performance. In addition, the optimal electrode (CZT-5) showed a better power density of 8.86 kW kg-2 1 and an energy density of 44.4 Wh kg-2 1 with excellent capacitive retention (85% after 5000 cycles). The enhanced performance could stem from the spongy rose flower-like nanostructure with a covered network of polygonic petals. Consequently, the replacement of Co2+ with Zn2+ also contributed by exchanging the oxidation states of targeted atoms, including Co2+, Co3+, Zn2+, and S2-2 . Moreover, surface topographical insight states that crystalline growth of the CZS samples with hillocks and valleys and CZS-5 sample exhibited maximum total roughness.

Ceramics International 49 (2023) 282–293, https://doi.org/10.1016/j.ceramint.2022.08.342