کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5146796 | 1497368 | 2017 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Nitrogen doped graphene anchored cobalt oxides efficiently bi-functionally catalyze both oxygen reduction reaction and oxygen revolution reaction
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Nitrogen doped graphene anchored cobalt oxides efficiently bi-functionally catalyze both oxygen reduction reaction and oxygen revolution reaction Nitrogen doped graphene anchored cobalt oxides efficiently bi-functionally catalyze both oxygen reduction reaction and oxygen revolution reaction](/preview/png/5146796.png)
چکیده انگلیسی
A series of efficient bifunctional electrocatalyst composed of nitrogen-doped graphene-cobalt oxide nanoparticles nano-hybrids (Co-N/G) are fabricated by one-pot hydrothermal synthesis, which involves in-situ growth of cobalt oxides nanocrystals and nitrogen doping into graphene. 2, 4, 6-Triaminopyrimidine used as nitrogen precursor could anchor cobalt oxides nanoparticles on graphene oxide as active centers for oxygen electrode reactions. The TEM, Raman, XRD and XPS confirm the germination of nitrogen doped graphene and nano-sized cobalt oxides. The optimized Co-N/G catalyst consists of the highest contents of pyridinic nitrogen and CoO, which efficiently catalyze both ORR and OER. The strong coupling between cobalt oxides and N-graphene endows Co-N/G 600 with a low reversible overvoltage of 0.96Â V between ORR and OER in alkaline medium, which is superior to novel catalysts such as Pt/C (1.24Â V), IrO2 (1.43Â V) and RuO2 (1.35Â V), rendering it bi-catalyst efficient and economical for reversible oxygen electrode reactions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 42, Issue 9, 2 March 2017, Pages 5899-5907
Journal: International Journal of Hydrogen Energy - Volume 42, Issue 9, 2 March 2017, Pages 5899-5907
نویسندگان
Qing Wang, Wenhui Hu, Yongmin Huang,