کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
181298 459400 2009 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Breeding phenomenon of nickel in anode of solid oxide fuel cell via electrochemical reaction
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Breeding phenomenon of nickel in anode of solid oxide fuel cell via electrochemical reaction
چکیده انگلیسی

The solid oxide fuel cell (SOFC) was constructed with NiO/YSZ (yttria stabilized zirconia) as anode supported substrate, with YSZ electrolyte, and La0.8Sr0.2MnO3 (LSM) cathode. Here, we show a novel phenomenon of that original Ni grains of micron-scale size in anode of SOFC can be segregated to form nano grains by electrochemical reaction at 800 °C. This breeding function can enhance cell performance obviously. The mechanism for the breeding of nano-scale Ni grain involves two reactions of: 1. NiO+H2→Ni+H2ONiO+H2→Ni+H2O; 2. Ni+O2-→NiO+2e-Ni+O2-→NiO+2e-, and a non-fuel current can be generated by Reaction 2, which implies that Ni acts as not only a catalyst but also a reactant.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochemistry Communications - Volume 11, Issue 7, July 2009, Pages 1381–1384
نویسندگان
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