کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4767088 | 1424118 | 2017 | 32 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Chrysanthemum-derived N and S co-doped porous carbon for efficient oxygen reduction reaction and aluminum-air battery
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Implementation of cheap and efficient electrocatalysts towards oxygen reduction reaction (ORR) falls in the central focus on fulfilling cost-affordable and high-performance fuel cells and metal-air batteries. In this study, N and S dual-doped porous carbon was prepared by a facile strategy for using tribute chrysanthemum as precursor and zinc chloride as activating agent. The catalyst prepared at 800 °C (NSC800) depicts multiscale porous with large specific surface area (810 m2 gâ1) and abundant exposed intrinsic dopants. The electrochemical characterizations exhibit that its onset potential is 0.0966 V versus Hg/HgO electrode, much higher than that of the other reported N, S co-doped carbons, and it also shows the better methanol tolerance, carbon monoxide (CO) poisoning and stability than commercial Pt/C. Consequently, NSC800 catalyst shows attractive properties when used as the air cathode of a home-made primary aluminum-air battery, e.g., an open-circuit potential of ca. 1.64 V, a discharge specific capacity of 288 mAh gâ1, and a peak power density of 46 mW cmâ2. Such attractive performances could be mainly attributed to the synergistic effect of exposed intrinsic N and S active sites and increased specific surface area with multiscale porous. Our idea on developing such doped carbons by utilizing extensive intrinsic components of biomass would be a promising strategy to cathode electrocatalyst for fuel cells and metal-air batteries.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 239, 10 June 2017, Pages 1-9
Journal: Electrochimica Acta - Volume 239, 10 June 2017, Pages 1-9
نویسندگان
Lina Xu, Hao Fan, Lixin Huang, Jianling Xia, Shouhai Li, Mei Li, Haiyang Ding, Kun Huang,