کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4766895 | 1424109 | 2017 | 27 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Fabrication and electrochemical properties of a graphene-enhanced hierarchical porous network of Fe3O4/carbon nanobelts
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
A novel, facile and scalable process of simultaneous activation and templating is developed for in situ synthesis of graphene-enhanced 3D hierarchical porous carbon nanobelt networks uniformly anchored with polycrystalline Fe3O4 nanoparticles (5-45Â nm) (Fe3O4-rGO/poly(vinyl alcohol) (PVA)-derived carbon) as a high-performance supercapacitor electrode. During the synthesis, 3D self-assembled NaCl particles are adopted as a structural template to direct the growth of 3D carbon nanobelt networks with interconnected macropores, KOH is used as an activating reagent to generate porous nanobelts with masses of micro-, meso- and macropores, and graphene sheets behave as a chemical activator to promote the growth of hierarchical porous thin nanobelts. The resulting Fe3O4-rGO/PVA-derived carbon electrode leads to a combination of the redox pseudo-capacitance of Fe3O4 and the electric double-layer capacitance of the carbon species with a remarkably high capacitivity (538.8Â FÂ gâ1 at 5Â AÂ gâ1) and outstanding cycle performance (â¼590Â FÂ gâ1 after 5000 cycles at 5Â AÂ gâ1). This work offers a new strategy for preparation of 3D hierarchical porous carbon networks for future applications.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 248, 10 September 2017, Pages 150-159
Journal: Electrochimica Acta - Volume 248, 10 September 2017, Pages 150-159
نویسندگان
Xing Yu, Mengyi Wang, Annie Gagnoud, Yves Fautrelle, Rene Moreau, Xi Li,