کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7706247 | 1497308 | 2018 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Facile synthesis of laminated porous WS2/C composite and its electrocatalysis for oxygen reduction reaction
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The Vulcan XC-72R modified WS2 nanocomposite (WS2/Cï¼was prepared by solid reaction process combined with sonication. The as-prepared WS2/C nanocomposite presents a laminated porous structure by SEM and TEM characterization. The electrochemical experiments show that the onset potential and the limiting-current density of WS2/C is 0.78Â V and 4.99Â mAÂ cmâ2, respectively, which is much higher than, WS2 (3.12Â mAÂ cmâ2) and Vulcan XC-72R (2.79Â mAÂ cmâ2). The number of transfer electrons in ORR at the WS2/C nanocomposite electrode is 3.70, which is close to four-electron process. Besides, the current density of WS2/C nanocomposites remained at 90% after 20,000Â s, indicating its superior electrochemical stability. All these facts reveal that the as-prepared WS2/C nanocomposite can be regarded as a promising cathode ORR catalyst for fuel cell.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 43, Issue 17, 26 April 2018, Pages 8290-8297
Journal: International Journal of Hydrogen Energy - Volume 43, Issue 17, 26 April 2018, Pages 8290-8297
نویسندگان
Huodi Huang, Xiaofeng Zhang, Yi Zhang, Baohua Huang, Jiannan Cai, Shen Lin,