کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7921291 1511746 2018 15 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Novel preparation of N-doped carbon spheres with excellent oxygen reduction reaction catalytic activity
ترجمه فارسی عنوان
آماده سازی جدید کره های کربن نیتروژنه با فعالیت کاتالیزوری واکنش اکسیژن عالی
کلمات کلیدی
نانوفایبر پلی یانیلین، خشک کردن اسپری، کربناته دمای بالا، واکنش کاهش اکسیژن،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد مواد الکترونیکی، نوری و مغناطیسی
چکیده انگلیسی
In the present paper, spherical porous N-doped carbon nanomaterials were synthesized using polyaniline nanofiber as nitrogen-carbon precursor through spray drying and high temperature carbonation. In the process of spray drying, polyaniline fibers were entangled to form spherical nanomaterials with pore structures. The average diameter of the carbon spheres prepared by spray drying was about 3 μm. After high temperature carbonation, the diameter shrunk to 2 μm. The catalyst (CSDP-900) which was fabricated by spray drying and high temperature carbonation at 900 °C exhibited a high onset potential and a nearly four-electron pathway for oxygen reduction reaction (ORR) in 0.1M KOH solution as well as stronger methanol tolerance and better long-term durability than commercial Pt/C. This paper provides a novel, easy and scalable method to prepare N-doped porous carbon spheres with excellent ORR catalytic properties.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Chemistry and Physics - Volume 217, 15 September 2018, Pages 513-518
نویسندگان
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