کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7740192 | 1497992 | 2013 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Miniature H2/O2 fuel cells using TiO2 nanotube substrates and sputtered Pt catalyst
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Modified designs for a miniature H2/air fuel cell are described using Pt sputtered on titanium oxide nanotube (Pt/TONT) as a catalyst at low mass loadings. Titanium microgrids or Ti evaporated onto a silicon substrate with holes at the center were used as substrates that were then anodized in fluoride-containing electrolytes to form the TONT arrays. Self-organized tubes grew as anodizing time increased, resulting in the highly enhanced surface area for electrochemical reactions. High cathodic current on cyclic voltammogram of Pt/TONT catalyst indicated high catalytic activity for the oxygen reduction reaction (ORR). The miniature fuel cells were successful, and showed high power densities up to 9.64Â mWÂ cmâ2 at potentials from 0.7Â V to 0.2Â V.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 240, 15 October 2013, Pages 612-617
Journal: Journal of Power Sources - Volume 240, 15 October 2013, Pages 612-617
نویسندگان
Woo-Jin Lee, Dong-Ha Lim, W.H. Smyrl,