کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6602934 | 1424082 | 2018 | 28 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A facile strategy to construct CoOx in situ embedded nanoflowers as an efficient electrocatalyst for oxygen evolution reaction
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
With a growing demand for clean and renewable energy associated with water splitting, regenerative fuel cells, metal-air batteries, etc., exploring an efficient and cost-effective electrocatalyst with superior durability for oxygen evolution reaction (OER) is of great significance. In this study, a unique CoOx embedded nanoflower microstructure (Co0.6-PyNa) has been synthesized via an extremely facile one-step, highly scalable aqueous method under mild conditions, by using Co(COOH)2 as the precursor and pyrrole as the structure-directing agent. The Co0.6-PyNa exhibits the excellent electrocatalytic activity toward OER in 1â¯M KOH solution with an overpotential of as low as 299â¯mV and a small Tafel slope of 67â¯mV decâ1, which is comparable to the commercial RuO2, along with superior operational stability to RuO2. The high OER catalytic performance of Co0.6-PyNa has been reasoned to originate from the exposure of abundant CoOx active species uniformly dispersed on the nanoflakes due to its high specific surface area and the intrinsic extraordinarily high activity of CoOx active species. This work provides a promising strategy to fabricate efficient, stable and low-cost OER electrocatalyst, which is expected to promote the development of OER-related energy storage and conversion technologies.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 275, 10 June 2018, Pages 218-224
Journal: Electrochimica Acta - Volume 275, 10 June 2018, Pages 218-224
نویسندگان
Liming Zeng, Xiangzhi Cui, Jimei Zhang, Weimin Huang, Lisong Chen, Chenyang Wei, Jianlin Shi,