کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6662777 | 463226 | 2014 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Characterization of neutralized graphite oxide and its use in electric double layer capacitors
ترجمه فارسی عنوان
تشریح اکسید گرافیت خنثی شده و استفاده از آن در خازن های دو لایه الکتریکی
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کلمات کلیدی
اکسید گرافیت کروی، خنثی سازی، تراکم بالا، خازن الکتریکی دو لایه،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
چکیده انگلیسی
Spherical graphite oxide (GO) with high density was synthesized from mesocarbon microbeads (MCMB). The obtained GO was neutralized by various alkaline metal hydroxides and tetraalkylammonium hydroxides. The neutralized GO showed lower water content and much better thermal stability than those of pristine GO. The as-prepared neutralized GOs were investigated as electrode materials for electric double layer capacitor (EDLC) in organic electrolyte. From both the results of galvanostatic charge-discharge and cyclic voltammetry (CV) measurements, it was found that the tetrabutylammonium hydroxide (TBA-OH) together with lithium hydroxide neutralized GO (TBA-Li-GO) displayed a relatively ideal EDLC feature after electrochemical activation at the initial cycle. The positively polarized TBA-Li-GO with small surface area (16Â m2Â gâ1) exhibited a high volumetric capacitance of 60Â FÂ cmâ3 after 1000 cycles, which is much higher than that of commercial activated carbon (36Â FÂ cmâ3).
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Electroanalytical Chemistry - Volume 712, 1 January 2014, Pages 185-193
Journal: Journal of Electroanalytical Chemistry - Volume 712, 1 January 2014, Pages 185-193
نویسندگان
Wenwen Zhao, Gentoku Kido, Kazuki Hara, Hideyuki Noguchi,