کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5458181 | 1516166 | 2017 | 32 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Integrated FeOOH nanospindles with conductive polymer layer for high-performance supercapacitors
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
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چکیده انگلیسی
The development of efficient electrode materials with high energy density and high power density is crucial to the assembly of high-performance storage device. One-dimensional (1D) coaxial nanostructured materials with large surface area and superior ion transport have shown great potential for enhancement of electrochemical performance. In this paper, we design a class of 1D PPy-sheathed FeOOH nanospindles (FeOOH@PPy) as integrated electrode for supercapacitors (SCs). The 1D coaxial nanostructures and elaborate integrated conductive layer endow them with excellent electrochemical performance. For example, the as-obtained FeOOH@PPy electrode exhibits a specific capacitance of 1140Â FÂ gâ1 at a current density of 1Â AÂ gâ1, which is two folds larger than that of the bare FeOOH. Furthermore, the as-assembled FeOOH@PPy//AC asymmetric supercapacitor (ASC) reveals a high specific energy density of 39.1Â Wh kgâ1 with a power density of 800.0Â WÂ kgâ1. After 5000 cycling tests, the device retains 78.7% of the initial specific capacitance, showing its good stability. The present work represents an important step toward rational fabrication of iron-based supercapacitor electrodes with new horizons for fundamental and technological applications.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 728, 25 December 2017, Pages 631-639
Journal: Journal of Alloys and Compounds - Volume 728, 25 December 2017, Pages 631-639
نویسندگان
Guijuan Wei, Kun Du, Xixia Zhao, Chuang Li, Jinquan Li, Kaikai Ren, Yiwen Huang, Hui Wang, Shuang Yao, Changhua An,