کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
178909 459326 2015 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Thermal stability and performance enhancement of nano-porous platinum cathode in solid oxide fuel cells by nanoscale ZrO2 capping
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Thermal stability and performance enhancement of nano-porous platinum cathode in solid oxide fuel cells by nanoscale ZrO2 capping
چکیده انگلیسی


• Nanoscale ZrO2 were deposited on nano-porous Pt by atomic layer deposition (ALD).
• 10 ALD-cycles of ZrO2 (~ 1.6 nm) effectively confined the thermally-driven agglomeration of Pt cathode.
• The ZrO2 capping has also unexpectedly lowered the polarization resistance of Pt cathode.

This work demonstrates a nanoscale zirconia layer coated by atomic layer deposition (ALD) with only a few coating cycles on a nano-porous platinum cathode surface to serve as a physical confinement to prevent the electrode agglomeration under high temperature operation, and at the same time to enhance the cathode oxygen reduction activity. The resulted enhancement in cathode electrochemical performance can arise from the discontinuous ZrO2 film that facilitates the oxygen adsorption on cathode surface and decreases the oxygen adsorption–desorption resistance.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochemistry Communications - Volume 56, July 2015, Pages 65–69
نویسندگان
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