论文成果
Synthesis of a (NiFe)<sub>9</sub>S<sub>8</sub> nanorod array as a negative electrode for a high-performance hybrid supercapacitor
- 发布时间：2024-12-23
- 点击次数：
- 关键字：NI-FOAM; FE FOIL; NANOSHEETS; COMPOSITE
- 摘要：Inspired by morphological control and element doping, nanorod NFS-X ((NiFe)(9)S-8 with different Ni : Fe molar ratios) was synthesized by a hydrothermal method. In this work, uniform and dense NF-X (X = 0, 1, 3, 5, 7, 9 and 10) materials were prepared on NiFe foam, and as a precursor, the nanorod was formed in situ by sulfurization in ethanol. NFS-X (X = 0, 1, 3, 5, 7, 9 and 10) with nanorod morphology was successfully obtained by controlling the Ni and Fe ratio. The optimized NFS-3 has a unique nanorod structure, which provides abundant electrochemical active sites and sufficient electron and electrolyte migration paths for fast and deep Faraday reactions. A specific capacitance of 3620 mF cm(-2) at 2 mA cm(-2) was obtained with significant cycling performance (83.3% retention after 7000 cycles at 20 mA cm(-2)). Furthermore, asymmetric supercapacitor CNHC//NFS-3 was prepared by using NFS-3 nanorods as a cathode and double-shell layer Co/Ni-based alkaline carbonate (CNHC) as an anode. The device presents an excellent energy density of 68.9 Wh kg(-1) at a power density of 0.74 kW kg(-1) while driving a small fan for operation, exhibiting potential for practical applications.
- 卷号：26
- 期号：4
- 是否译文：否