4.7 Article

Synthesis and loading-dependent characteristics of nitrogen-doped graphene foam/carbon nanotube/manganese oxide ternary composite electrodes for high performance supercapacitors

期刊

JOURNAL OF COLLOID AND INTERFACE SCIENCE
卷 501, 期 -, 页码 1-10

出版社

ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2017.04.039

关键词

Nitrogen-doped graphene foam; Carbon nanotube; Manganese oxide; Composite electrodes; Supercapacitors

资金

  1. National Natural Science Foundation of China [51572218, 11304249, 61275105]
  2. International Cooperative Program [201410780]

向作者/读者索取更多资源

The ternary composite electrodes, nitrogen-doped graphene foam/carbon nanotube/manganese dioxide (NGF/CNT/MnO2), have been successfully fabricated via chemical vapor deposition (CVD) and facile hydrothermal method. The morphologies of the MnO2 nanoflakes presented the loading-dependent characteristics and the nanoflake thickness could also be tuned by MnO2 mass loading in the fabrication process. The correlation between their morphology and electrochemical performance was systematically investigated by controlling MnO2 mass loading in the ternary composite electrodes. The electrochemical properties of the flexible ternary electrode (MnO2 mass loading of 70%) exhibited a high areal capacitance of 3.03 F/cm(2) and a high specific capacitance of 284 Fig at the scan rate of 2 mV/s. Moreover, it was interesting to find that the capacitance of the NGF/CNT/MnO2 composite electrodes showed a 51.6% increase after 15,000 cycles. The gradual increase in specific capacitance was due to the formation of defective regions in the MnO2 nanostructures during the electrochemical cycles of the electrodes, which further resulted in increased porosity, surface area, and consequently increased electrochemical capacity. This work demonstrates a rarely reported conclusion about loading-dependent characteristics for the NGF/CNT/MnO2 ternary composite electrodes. It will bring new perspectives on designing novel ternary or multi-structure for various energy storage applications. (C) 2017 Elsevier Inc. All rights reserved.

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