کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9625622 459856 2005 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Copper electrocrystallization in PEDOT in presence and absence of copper-polymer-stabilized species
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Copper electrocrystallization in PEDOT in presence and absence of copper-polymer-stabilized species
چکیده انگلیسی
Electrochemical reduction of copper ions in poly(3,4-ethylenedioxythiophene) (PEDOT), performed at low overpotential or low current density, allows for stabilization of Cu(I) species in the polymer layer. The electrocrystallization of copper at high overpotential is explored in absence and presence of pre-stabilized Cu(I) species in PEDOT. It is found that the copper-pre-stabilized material allows for a five-fold increase of the number of deposited copper crystals. Statistical analysis of the distances between neighbouring crystals shows for both (as-synthesized and copper-pre-stabilized) materials a significant deviation from random Poisson probability distribution. For the first time, the experimental distributions are fitted by a theoretical probability model, accounting for the finite size of the crystals. The statistical analysis allows excluding the role of zones of reduced overpotential in the nucleation stage of electrocrystallization and concluding that new sites for nucleation become active in the presence of Cu(I)-stabilized species in PEDOT.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 50, Issues 7–8, 15 February 2005, Pages 1669-1674
نویسندگان
, ,