Conductivity and oxygen reduction activity changes in lanthanum strontium manganite upon low-level chromium substitution
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چکیده
منابع مشابه
Magnetic transitions and electrical transport in lanthanum strontium manganite: Effects of substitutions and high pressure
The observation of a substitution-induced ferromagnetic order ~Tc5200 K! is reported in antiferromagnetic La0.9Sr0.1MnO3 ~TN5130 K! when 0.05 of La is replaced by yttrium. Important results of ferromagnetic resonance ~FMR! and high-pressure transport studies are as follows. ~i! Data on FMR linewidth and resistivity provide evidence for the presence of microscopic magnetic inhomogeneities, possi...
متن کاملThermodynamic and kinetic assessments of strontium-doped lanthanum manganite perovskites for two-step thermochemical water splitting
Solar-driven thermochemical water splitting using non-stoichiometric oxides has emerged as an attractive technology for solar fuel production. The most widely considered oxide for this purpose is ceria, but the extreme temperatures required to achieve suitable levels of reduction introduce challenges in reactor design and operation, leading to efficiency penalties. Here, we provide a quantitati...
متن کاملسنتز نانو بلورکهای lsm (lanthanum strontium manganite) به منظور استفاده درکاتدپیل سوختی اکسید جامد
در این پژوهش سنتز نانو بلورک های lsm (lanthanum strontium manganite) به منظور استفاده درکاتد پیل سوختی اکسید جامد به روش هم رسوبی مورد بررسی قرار گرفته است. اکسید لانتانیوم (la2o3)، کربنات استرانسیوم (srco3) و کربنات منگنز آبدار (mnco3.xh2o) به عنوان ماده اولیه انتخاب گردیده است. برای ایجاد محلول های نیترات لانتانیوم، نیترات استرانسیوم و نیترات منگنز، مقادیر توزین شده اولیه در اسید نیتریک غلیظ ...
15 صفحه اولOxygen Surface Exchange Kinetics on Sr-Substituted Lanthanum Manganite and Ferrite Thin-Film Microelectrodes
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متن کاملKinetic Study of the Formation of Oxygen Vacancy on Lanthanum Manganite Electrodes
The electrochemical reduction of oxygen on Lanthanum Manganite(LSM) electrodes has been investigated by cyclic voltammetry, AC impedance and, in particular, potential step. An emphasis was given to the study of the kinetics of the formation of oxygen vacancy, which is shown to be the main cause for the reserved hysteresis in cyclic voltammograms and for the increase in the electrochemical activ...
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ژورنال
عنوان ژورنال: Solid State Ionics
سال: 2014
ISSN: 0167-2738
DOI: 10.1016/j.ssi.2014.08.006