کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9761687 | 1498424 | 2005 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Introduction of A-site deficiency into La0.6Sr0.4Co0.2Fe0.8O3-δ and its effect on structure and conductivity
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
A-site deficiency was introduced intentionally into the mixed conducting perovskite ABO3-type oxide, La0.6Sr0.4Co0.2Fe0.8O3-δ (LSCF=6/4/2/8), in order to create additional oxygen vacancies. With increasing Sr-deficiency, z in La0.6Sr0.4-zCo0.2Fe0.8O3-δ, its lattice parameters and oxygen content gradually increased and decreased, respectively, which strongly suggested that additional oxygen vacancies were created in the lattice. It is expected that these additional oxygen vacancies improve its oxide ionic conductivity and catalytic property for oxygen reduction. Further increase in z, however, led the LSCF system into a coexistence region with transition metal oxides. In the wide range of P(O2), electrical property of samples 0.00â¤zâ¤0.025 was p-type semi-conducting regardless of the z value, whereas its conductivity was strongly affected by a subtle change in z.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solid State Ionics - Volume 176, Issues 11â12, 31 March 2005, Pages 1145-1149
Journal: Solid State Ionics - Volume 176, Issues 11â12, 31 March 2005, Pages 1145-1149
نویسندگان
Atsushi Mineshige, Junko Izutsu, Maiko Nakamura, Kengo Nigaki, Jiro Abe, Masafumi Kobune, Satoshi Fujii, Tetsuo Yazawa,