کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6602707 | 1424079 | 2018 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The properties and performance of carbon produced through the electrochemical reduction of molten carbonate: A study based on step potential electrochemical spectroscopy
ترجمه فارسی عنوان
خواص و عملکرد کربن تولید شده از طریق کاهش الکتروشیمیایی کربنات مذاب: مطالعه بر اساس طیف سنج الکتروشیمیایی بالقوه گام
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کلمات کلیدی
کربن الکترودهایی خازن های الکتروشیمیایی، کاهش کربنات خرد شده، طیف سنج الکتروشیمیایی بالقوه مرحله، ولتامتری سیسیک، مشخصات کربن،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
چکیده انگلیسی
Carbons with BET specific surface areas of 500â¯m2â¯gâ1 have been produced through the electrolytic reduction of molten Li2CO3-K2CO3-Na2CO3 at the eutectic composition (43.5:25:31.5â¯mol%) onto graphite at 600â¯Â°C and 0.30â¯Aâ¯cmâ2 under a 60â¯mLâ¯minâ1 CO2 gas flow. These carbons have been shown to consist largely of amorphous carbon with some spherical and flake-like conglomerates. Functionalised oxygen has been observed in synthesised carbons using FTIR and XPS. Synthesised carbons have been investigated in 3-electrode cells and analysed using cyclic voltammetry and step potential electrochemical spectroscopy (SPECS) at room temperature. Capacitances as high as 450â¯Fâ¯gâ1 have been observed at 0.0833â¯mVâ¯sâ1 scan rates. The EDLC and pseudo-capacitive behaviour of produced carbons have been analysed and it has been found that the produced carbons behave hybrid capacitors with considerable pseudo-capacitive contributions. The performance of synthesised carbons has been compared to that of activated carbon derived through the chemical activation of carbon from the pyrolysis of coconut husks and to the reported capacitances of commercial activated carbons.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 278, 10 July 2018, Pages 340-351
Journal: Electrochimica Acta - Volume 278, 10 July 2018, Pages 340-351
نویسندگان
Matthew A. Hughes, Jessica A. Allen, Scott W. Donne,