کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7727137 | 1497906 | 2016 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Capacitance of Ti3C2Tx MXene in ionic liquid electrolyte
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Capacitance of Ti3C2Tx MXene in ionic liquid electrolyte Capacitance of Ti3C2Tx MXene in ionic liquid electrolyte](/preview/png/7727137.png)
چکیده انگلیسی
Ti3C2Tx MXene, a two-dimensional (2D) early transition metal carbide, has shown an extremely high volumetric capacitance in aqueous electrolytes, but in a narrow voltage window (less than 1.23Â V). The utilization of MXene materials in ionic liquid electrolytes with a large voltage window has never been addressed. Here, we report the preparation of the Ti3C2Tx MXene ionogel film by vacuum filtration for use as supercapacitor electrodes operating in 1-Ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide (EMI-TFSI) neat ionic liquid electrolyte. Due to the disordered structure of the Ti3C2Tx hydrogel film and a stable spacing after vacuum drying, achieved through ionic liquid electrolyte immersion of the Ti3C2Tx hydrogel film, the Ti3C2Tx surface became accessible to EMI+ and TFSIâ ions. A capacitance of 70Â FÂ gâ1 together with a large voltage window of 3Â V was obtained at a scan rate of 20Â mVÂ sâ1 in neat EMI-TFSI electrolyte. The electrochemical signature indicates a capacitive behavior even at a high scan rate (500Â mVÂ sâ1) and a high power performance. This work opens up the possibilities of using MXene materials with various ionic liquid electrolytes.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 326, 15 September 2016, Pages 575-579
Journal: Journal of Power Sources - Volume 326, 15 September 2016, Pages 575-579
نویسندگان
Zifeng Lin, Daffos Barbara, Pierre-Louis Taberna, Katherine L. Van Aken, Babak Anasori, Yury Gogotsi, Patrice Simon,