کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
180427 459380 2010 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Synthesis of nanoporous activated iridium oxide films by anodized aluminum oxide templated atomic layer deposition
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Synthesis of nanoporous activated iridium oxide films by anodized aluminum oxide templated atomic layer deposition
چکیده انگلیسی

Iridium oxide (IrOx) has been widely studied due to its applications in electrochromic devices, pH sensing, and neural stimulation. Previous work has demonstrated that both Ir and IrOx films with porous morphologies prepared by sputtering exhibit significantly enhanced charge storage capacities. However, sputtering provides only limited control over film porosity. In this work, we demonstrate an alternative scheme for synthesizing nanoporous Ir and activated IrOx films (AIROFs). This scheme utilizes atomic layer deposition to deposit a thin conformal Ir film within a nanoporous anodized aluminum oxide template. The Ir film is then activated by potential cycling in 0.1 M H2SO4 to form a nanoporous AIROF. The morphologies and electrochemical properties of the films are characterized by scanning electron microscopy and cyclic voltammetry, respectively. The resulting nanoporous AIROFs exhibit a nanoporous morphology and enhanced cathodal charge storage capacities as large as 311 mC/cm2.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochemistry Communications - Volume 12, Issue 11, November 2010, Pages 1543–1546
نویسندگان
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