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首页> 外文期刊>Inorganic Chemistry Frontiers >Sequential partial ion exchange synthesis of composite Ni3S2/Co9S8/NiSe nanoarrays with a lavender-like hierarchical morphology
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Sequential partial ion exchange synthesis of composite Ni3S2/Co9S8/NiSe nanoarrays with a lavender-like hierarchical morphology

机译：具有淡紫色等级形态的复合Ni3S2 / CO9S8 / NIIS纳米阵列的顺序部分离子交换合成

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摘要

A series of hierarchical nanoarrays with a lavender-like structure was synthesized via a facile in situ hydrothermal method by sequential partial ion exchange. Hierarchical Ni@Ni3S2 nanoarrays that were partially surrounded with nanoflakes were first fabricated by simultaneously using Ni foam as a template and as a source. The hierarchical structure was composed of one-dimensional rods combined with two-dimensional nanoflakes. Furthermore, Co and Se ions, as the beneficial cation and anion, were successfully introduced into the hierarchical Ni@Ni3S2 material by sequential partial ion exchange. This reaction formed Ni@Ni3S2/Co9S8 and Ni@Ni3S2/Co9S8/NiSe composite multilevel electrodes with structures that were similar to those of the parent materials. All the as-prepared materials were assembled into asymmetric supercapacitor devices to explore their electrochemical performance. Compared with singlecomponent Ni@Ni3S2, the Ni@Ni3S2/Co9S8/NiSe//active carbon device exhibited a better rate performance of 78.93 F g~(-1) at a current density of 1 A g~(-1) (retaining 75% from 1 A g~(-1) to 10 A g~(-1)). This device still delivered an energy density of 17.75 Wh kg~(-1) even at a high power density of 1945.2 W kg~(-1). This finding demonstrated that Ni@Ni3S2/Co9S8/NiSe is a promising electrode material for supercapacitors.
机译：通过顺序部分离子交换通过沿原位水热法合成具有薰衣草状结构的一系列分层纳米阵列。首先使用Ni泡沫作为模板并作为源，首先通过将部分包围纳米薄片包围的分层Ni @ Ni3S2纳米阵列。分层结构由一维棒与二维纳米薄片组成。此外，通过顺序部分离子交换成功地将CO和Se离子作为有益阳离子和阴离子成功地引入分层NI3S2材料中。该反应形成Ni @ Ni3S2 / Co9S8和Ni @ Ni3S2 / Co9S8 / NISE复合多晶体电极，其结构类似于母材的结构。将所有原样的材料组装成不对称超级电容器装置，以探索其电化学性能。与单次组合Ni @ Ni3S2相比，Ni @ Ni3S2 / Co9S8 / NISE //活性炭装置在1A G〜（-1）的电流密度下表现出78.93f g〜（-1）的更好速率性能（保持75 ％从1 a g〜（-1）到10 a g〜（-1））。即使在1945.2Wkg〜（-1）的高功率密度，该装置仍然提供17.75WH kg〜（-1）的能量密度。该发现表明NI @ Ni3S2 / Co9S8 / NISE是超级电容器的有希望的电极材料。

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  • 来源
    《Inorganic Chemistry Frontiers》 |2017年第4期|共9页
  • 作者

    Shaobo Huang; Wangxi Zhang; Shizhong Cui;

  • 作者单位

    Center for Advanced Materials Research Zhongyuan University of Technology Zhengzhou 450007 P.R. China.;

    Center for Advanced Materials Research Zhongyuan University of Technology Zhengzhou 450007 P.R. China.;

    Center for Advanced Materials Research Zhongyuan University of Technology Zhengzhou 450007 P.R. China.;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 无机化学;
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