کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
195214 459810 2007 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
In situ X-ray diffraction of the intercalation of (C2H5)4N+ and BF4− into graphite from acetonitrile and propylene carbonate based supercapacitor electrolytes
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
In situ X-ray diffraction of the intercalation of (C2H5)4N+ and BF4− into graphite from acetonitrile and propylene carbonate based supercapacitor electrolytes
چکیده انگلیسی

The intercalation of (C2H5)4N+ and BF4− from acetonitrile (AN) and propylene carbonate (PC) solutions into bound graphite electrodes during cyclic voltammetry was investigated by in situ X-ray diffraction (XRD) using synchrotron radiation. The disappearance of the 0 0 2 reflection of graphite in the XRD patterns upon intercalation of (C2H5)4N+ indicates that the cations are accumulated between the graphene layers. For the intercalation of BF4−, the appearance of 0 0 l reflexes in the intercalated state provides clear evidence of staging. In both cases, the in-plane periodicity was not significantly altered by the intercalation process apart from slight changes in the CC bond length. The intercalation of BF4− from the PC-based electrolyte was found to have the least destructive effect on the periodicity of the graphite structure during initial cycling in the anodic potential range along with the highest charge/discharge efficiency.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 53, Issue 3, 20 December 2007, Pages 1074–1082
نویسندگان
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