کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7990234 | 1516126 | 2018 | 28 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Sulfidation of NiFe-layered double hydroxides as novel negative electrodes for supercapacitors with enhanced performance
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Sulfidation of NiFe-layered double hydroxides as novel negative electrodes for supercapacitors with enhanced performance Sulfidation of NiFe-layered double hydroxides as novel negative electrodes for supercapacitors with enhanced performance](/preview/png/7990234.png)
چکیده انگلیسی
The discovery and design of new negative electrodes play an essential role in the development of high-performance asymmetric supercapacitors (ASCs). In this work, we report a sulfidation of NiFe-layered double hydroxides (NiFe-LDHS) fabricated through vulcanizing NiFe-LDH via a hydrothermal method, with enhanced electrochemical performance serving as a negative electrode for ASCs. The sulfidation treatment significantly improves the electrical conductivity and reduces the diffusion resistance of the electrode. Electrochemical tests show that the NiFe-LDHS exhibits much higher area specific capacitance (992â¯mFâ¯cmâ2 at 2â¯mAâ¯cmâ2) and better cycling stability (64.5% of the initial capacity after 2000 cycles at 4â¯mAâ¯cmâ2), compared with the pristine NiFe-LDH. ASCs which are configurated by using NiFe-LDHS as the negative electrodes and Ni(OH)2 as the positive electrodes, deliver high energy density of 39.9â¯Wh kgâ1 at a power density of 211.4â¯Wâ¯kgâ1 and remain 13.5â¯Wh kgâ1 at a high power density of 2114â¯W kgâ1.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 768, 5 November 2018, Pages 635-643
Journal: Journal of Alloys and Compounds - Volume 768, 5 November 2018, Pages 635-643
نویسندگان
Ting Xiao, Shulin Wang, Jin Li, Na Yang, Wei Li, Peng Xiang, Lihua Jiang, Xinyu Tan,