Hierarchically hollow structured NiCo2S4@NiS for high-performance flexible hybrid supercapacitors

• DOI: 10.1039/c9nr09991c
• Publication Date: 2020-01-20T14:23:33Z
• Authors: Guangmeng Qu; Chuanlin Li; Peiyu Hou; Gang Zhao; Xiao Wang; Xiaoli Zhang; Xijin Xu
• Keywords: 01 natural sciences; 7. Clean energy; 0104 chemical sciences

Hierarchical nanostructures with outstanding electrochemical properties and mechanical stability are ideal for constructing flexible hybrid supercapacitors. Herein, hierarchically hollow NiCo2S4@NiS were designed synthesized by sulfurizing the hierarchical NiCo double hydroxides (DHs) coated nickel hydroxide on carbon fabrics (NiCo-DHs@Ni(OH)2/CF), which trigger excellent performances. The NiCo2S4@NiS/CF exhibits a high specific capacity of 1314.0 C g-1 at current density 1 A g-1, maintains rate performance about 79.2% initial 30 g-1. supercapacitors NiCo2S4@NiS//AC display energy 62.4 W h kg-1 power 800 remarkable cycling (96.2% capacitance after 5000 cycles) robust flexibility (no obvious decay during various deformations). Consequently, electrodes expected to be promising candidate new smart storage devices security, flexibility.