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
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Integrated FeOOH nanospindles with conductive polymer layer for high-performance supercapacitors
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 1140 F g−1 at a current density of 1 A g−1, 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 39.1 Wh kg−1 with a power density of 800.0 W kg−1. 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
نویسندگان
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