Synthesis and Characterization of Highly Uniform CuCo2S4 Ball‐in‐Ball Hollow Nanospheres as High Performance Electrode for Supercapacitors. Issue 20 (8th June 2018)

• Record Type: Journal Article
• Authors: Lee, Young Hun; Kang, Bong Kyun; Kim, Min Seob; Choi, Hyung Wook; Choi, Dong Soo; Kumar, Mohit; Yoon, Dae Ho
• Other Names: Yoon Seok‐Jin guestEditor.; Park Hyung‐Ho guestEditor.
• Is Part Of: Physica status solidi. Volume 215:Issue 20(2018)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2018-06-08
• Subjects: ball‐in‐ball hollow nanospheres -- binary transition metal sulfides -- Kirkendall effect -- supercapacitors; Solid state physics -- Periodicals; Solids -- Industrial applications -- Periodicals; 530.41
• DOI: 10.1002/pssa.201700936
• Languages: English
• ISSNs: 1862-6300

Abstract

Abstract : Highly uniform and monodispersed CuCo2 S4 ball‐in‐ball hollow nanospheres (HNSs) are successfully synthesized from CuCo‐glycerate nanospheres (NSs) precursors via a facile two‐step solvothermal process. The most influential parameter in anion exchange reaction between glycerate and sulfur ion is the solvothermal time, which plays a significant role in enhancing the structural and electrochemical properties. Impressively, CuCo2 S4 ball‐in‐ball HNSs obtained through a sulfurization reaction time of 18 h show high capacitance (442 F g −1 at current density of 0.5 A g −1 ) and superior electrochemical stability (84.5% at 5 A g −1 after 5000 cycles), which can realize high‐performance materials for supercapacitors. Abstract : Highly uniform and monodispersed CuCo2 S4 ball‐in‐ball hollow nanospheres (HNSs) are successfully synthesized from CuCo‐glycerate nanospheres (NSs) via a facile two‐step solvothermal process. Impressively, CuCo2 S4 ball‐in‐ball HNSs show high capacitance (442 F g −1 at current density of 0.5 A g −1 ) and superior electrochemical stability (84.5% at 5 A g −1 after 5000 cycles), which can realize high‐performance materials for supercapacitors.