Rational design of NiSe2@rGO nanocomposites for advanced hybrid supercapacitors

• DOI: 10.1016/j.jmrt.2021.11.036
• Publication Date: 2021-11-17T17:16:50Z
• Authors: Jiaqi Qu; Yucheng Bai; Xiaomeng Li; Kailan Song; Sen Zhang; Xiaoxia Wang; Xinchang Wang; Shuge Dai
• Keywords: Power density; Hybrid material

Hybrid supercapacitors represent a promising candidate for grid-scale energy storage devices because of their excellent high-power density, inherent safety and low cost. Here we report novel NiSe2@rGO nanocomposite (reduced graphene oxide decorated NiSe2 nanoparticles), which shows high specific capacity 467 C g−1 at 1 A superior rate performance (∼72.8% the retention 20 g−1). Moreover, hybrid supercapacitor (HSC) assembled from positive electrode rGO negative delivers density (34.3 Wh kg−1) splendid cycling lifespan (∼93% over 6500 cycles). This study provides insight on high-performance supercapacitors.