Microwave one-step controllable synthesis of NiSb materials for high-performance energy storage

• Published in: Journal of alloys and compounds 2022-07, Vol.909, p.164770, Article 164770
• Main Authors: Li, Jiaqi, Bi, Ruobing, Zhang, Tongtong, Du, Lijun, Hou, Ying, Wang, Fang, Zhang, Zhuxia
• Format: Article
• Language: English
• Subjects: Activated carbon; Asymmetry; Depletion; Electrode materials; Electrodes; Energy storage; Energy transmission; Intermetallic compound; Metal foams; Nanomaterials; Nickel; NiSb; One-step microwave process; Supercapacitor; Supercapacitors; Synthesis; X ray analysis
• ISSN: 0925-8388; 1873-4669
• DOI: 10.1016/j.jallcom.2022.164770

Energy depletion has led to the demand for new versatile materials with energy transmission and storage properties. Therefore, in this study, adhesive-free film structure of the NiSb alloy materials was obtained in one step through a simple and economic microwave synthesis technology using nickel foam as the source of nickel. X-ray analysis confirmed the successful preparation of NiSb nano-structures. In addition, electrochemical studies indicated that the adhesive-free film structure has a high capacity (4633 F g−1) and good cycle stability, and the capacitance value of this material was higher than that of previously reported alloy electrode materials such as MnCo and NiSn. In addition, we assembled an asymmetric supercapacitor with NiSb and activated carbon as the positive and negative electrode, respectively. The solid-state asymmetric supercapacitor had a working voltage of 1.7 V, and it exhibited a maximum energy density of 481.7 μWh cm−2 at 1630 μW cm−2, indicating the good energy transmission and storage properties of the NiSb nanomaterials. [Display omitted] •The NiSb alloy material exhibits a capacitance of 4633 F g-1 at 1 A g−1.•Self-supporting NiSb alloy was synthesized by one-step microwave method.•The assembled solid supercapacitor has a voltage window of 1.7 V.