کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
195214 | 459810 | 2007 | 9 صفحه PDF | دانلود رایگان |

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.
Journal: Electrochimica Acta - Volume 53, Issue 3, 20 December 2007, Pages 1074–1082