کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7727831 | 1497909 | 2016 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Use of pyrocatechol violet as an effective redox additive for highly promoting the supercapacitor performances
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
In present work, we demonstrate a simple but effective redox additive of pyrocatechol violet (abbr. PCV) to largely promote the capacitive performances especially when carried out in three different kinds of electrolytes (H2SO4, Na2SO4 and KOH), mostly due to its fast electron and proton transfer occurring in the electrode/electrolyte interface. It reveals that the PCV dosage incorporated into electrolyte plays a crucial role in the determination of capacitive performance. When conducted in a two-electrode system, incorporating 0.06 mol Lâ1 PCV into 1 mol Lâ1 H2SO4 can achieve large capacitance up to 200 F gâ1, which is almost 2.06 times than the one without the addition of PCV; besides, the corresponding energy density is of 28 Wh kgâ1 (also increasing 2 times). What's more, PCV has been extended as the redox additive in other electrolytes such as Na2SO4 and KOH, and remarkable promotion in capacitance and energy density also occur, well evincing the high efficiency and universal applicability of PCV for the large promotion of supercapacitors' performances due to its prominent electrochemical reversibility and high solubility.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 323, 15 August 2016, Pages 8-16
Journal: Journal of Power Sources - Volume 323, 15 August 2016, Pages 8-16
نویسندگان
Qian Wang, Yong Fu Nie, Xiang Ying Chen, Zheng Hui Xiao, Zhong Jie Zhang,