A novel electrode for supercapacitors: Spicules-like Ni3S2 shell grown on molybdenum nanoparticles doped nickel foam

文献类型： 外文期刊

第一作者： Cheng, Yu

作者： Cheng, Yu;Zhai, Miaomiao;Guo, Meisong;Yu, Yanan;Hu, Jingbo;Yu, Yanan

作者机构：

关键词： Ion implantation; Doped; Mo nanoparticle; Spicules-like Ni3S2; Hierarchical structure

期刊名称：APPLIED SURFACE SCIENCE （ 影响因子：6.707； 五年影响因子：5.905 ）

ISSN： 0169-4332

年卷期： 2019 年 467 卷

页码：

收录情况： SCI

摘要： In this work, a facile and unique electrode is fabricated by ion implantation and hydrothermal sulfurization methods for the first time. A spicules-like Ni3S2 shell is directly grown on the molybdenum nanoparticles doped nickel foam (MoNPs/NF@Ni3S2), which exhibits a special hierarchical structure. It is employed as the electrode of supercapacitor, exhibiting good electrochemical performance with high areal capacity of 1.06 C cm(-2) (361 C g(-1) ) at 1 mA cm(-2), good rate capability, and long cycling life (168% of the initial capacity) for 7000 cycles at 20 mA cm(-2). Compared with Ni3S2/NF, the electrode possesses better performance, which is attributed to the doped MoNPs, special morphology of Ni3S2, the hierarchical structure, as well as the synergistic effect between Ni3S2 and MoNPs. A symmetric supercapacitor based on MoNPs/NF@Ni(3)S(2 )electrodes maintains 108% of the original capacity after cycling for 7000 cycles at 0.5 mA cm(-2). The results mean that MoNPs/NF@Ni3S2 could be used as a battery-type electrode for supercapacitors.

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