کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1488113 1510714 2015 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
One-step synthesis and graphene-modification to achieve nickel phosphide nanoparticles with electrochemical properties suitable for supercapacitors
ترجمه فارسی عنوان
سنتز یک مرحله ای و اصلاح گرافن برای رسیدن به نانوذرات فسفید نیکل با خواص الکتروشیمیایی مناسب برای ابررایانه ها
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
چکیده انگلیسی


• Ni2P nanoparticles and graphene-modified Ni2P nanocomposites were synthesized.
• Ni2P nanoparticle electrode presents a higher specific capacitance of 600.1 F/g.
• Graphene-modified Ni2P nanocomposites show improved electrochemical properties.

A facile one-step method has been developed to synthesize nickel phosphide (Ni2P) nanoparticles which were further modified by graphene to form graphene-modified Ni2P nanocomposites. All of the synthesized samples were characterized in detail and investigated the corresponding electrochemical properties. Results show that the supercapacitor electrodes based on graphene-modified Ni2P nanocomposites exhibit better electrochemical properties compared to free Ni2P nanoparticles. When the loaded amount of graphene is 5% (wt%), the nanocomposite electrodes show higher specific capacitance, obviously improved cycle stabilization, better rate capability and higher energy density. This enhanced electrochemical behavior results from the graphene-modified Ni2P nanocomposite network structure which not only promotes efficient charge transport and electrolyte diffusion, but also prevents the volume expansion/contraction and corrosion of Ni2P nanoparticles. These encouraging findings demonstrate the possibility of graphene-modified Ni2P nanocomposites for applications in high-performance supercapacitors.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Research Bulletin - Volume 61, January 2015, Pages 333–339
نویسندگان
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