کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10141080 | 1646055 | 2018 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
High-density active sites porous Fe/N/C electrocatalyst boosting the performance of proton exchange membrane fuel cells
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Presently, the practical application of Fe/N/C catalysts as replacements of Pt for oxygen reduction reaction is still limited by insufficient activity. Herein, we demonstrate a novel design for such catalyst. On one hand, the obtained Fe/N/CSiO2ZnCl2 catalyst owns high densities of well-exposed active-sites derived from three-dimensional well-balanced macro-, meso-, and microporous structures constructed by adopting ZnCl2 salt and SiO2 microspheres as combined templates. On the other hand, simulation reveals that a high loading of catalyst in cathode catalyst layer would not benefit cell performance and fast oxygen reduction reaction process occurs only inside a limited thickness of catalyst layer. Particularly, the Fe/N/CSiO2ZnCl2 shows a maximal output power density as high as 480â¯mWâ¯cmâ2â¯at an ultra-low loading of 0.5â¯mgâ¯cmâ2. This study firstly exhibits that development of catalysts with high-density active sites and construct of ultra-thin catalyst layer are of great significance for improving the performance of fuel cell.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 401, 15 October 2018, Pages 287-295
Journal: Journal of Power Sources - Volume 401, 15 October 2018, Pages 287-295
نویسندگان
Rui Wu, Yujie Song, Xun Huang, Siguo Chen, Shumaila Ibraheem, Jianghai Deng, Jing Li, Xueqiang Qi, Zidong Wei,