4.7 Article

Core-shell structured Ni3S2@VO2 nanorods grown on nickel foam as battery-type materials for supercapacitors

期刊

APPLIED SURFACE SCIENCE
卷 508, 期 -, 页码 -

出版社

ELSEVIER
DOI: 10.1016/j.apsusc.2019.144876

关键词

Core-shell structure; Ni3S2@VO2; Areal specific capacity; Cycling stability; Symmetric supercapacitor

资金

  1. National Natural Science Foundation of China [21601079, 51473074, 21771095]
  2. Shandong Provincial Natural Science Foundation [ZR2016EMQ06, ZR2017JL013, ZR2019MEM031]
  3. Colleges and universities in Shandong Province science and technology projects [J17KA097]

向作者/读者索取更多资源

Rational design of composite with other electroactive materials can effectively improve the supercapacitive performances through the modulation of electronic structure and conductivity of the hybrid material. In this work, core-shell structured Ni3S2@VO2 nanorods on the nickel foam are prepared through a one-pot hydrothermal method. The addition of VO2 effectively reduces the charge transfer resistance and thus enhances the electrochemical conductivity. The nickel foam provides a platform for the in situ dispersive growth of Ni3S2@VO2 as well as a superhighway for the transformation of electrons. The Ni3S2@VO2 shows a high areal specific capacity of 1.09 C cm(-2) at 1 mA cm(-2). After a slight decrease in the initial 200 cycles, the discharge capacity remains almost constant at about 1.00 C cm(-2) during the following cycles. At a high current of 50 mA cm(-2), the areal specific capacitance is 0.09 C cm(-2). A symmetric supercapacitor is assembled using Ni3S2@VO2 as both the anode and cathode. The specific capacity of it is 0.864 C cm(-2) at a current of 1 mA cm(-2). Good cycling stability and rate capability are also obtained. All these features promise it a high performance supercapacitor electrode.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.7
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据