کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6614107 | 459623 | 2014 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Stability limitations for Pt/Sn-In2O3 and Pt/In-SnO2 in acidic electrochemical systems
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
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چکیده انگلیسی
Tin-doped indium oxide (Sn-In2O3) and indium-doped tin oxide (In-SnO2) were synthesized and investigated as the supports for platinum (Pt) electrocatalysts. The electrochemical stability of the bare and platinized oxide supports was examined from â0.8 to 1.4Â V vs. NHE. The Sn-In2O3 surface was generally stable at positive potentials, but experienced severe degradation at negative potentials due to the reduction/oxidation of the surface Sn and In species. In-SnO2 supports showed significant degradation over the entire potential range, which was caused by the preferential formation of Sn, SnO and In species. Neither Sn-In2O3 nor In-SnO2 are suitable as supports for hydrogen evolution catalysts. However, it was shown that Sn-In2O3 possessed very good stability at potentials relevant to the oxygen reduction reaction (>0.6Â V), which enables its application as a cathode electrocatalyst support for PEM fuel cells.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 115, 1 January 2014, Pages 116-125
Journal: Electrochimica Acta - Volume 115, 1 January 2014, Pages 116-125
نویسندگان
Ying Liu, William E. Mustain,