Influence of nickel doping on oxygen-ionic conductivity of the n = 1 Ruddlesden-Popper Phases La1.85Ca0.15(Cu1−xNix)O4−δ (δ = 0.0905)

Midouni, Adnene; Houchati, Mohamed Ikbal; Othman, Walid Belhaj; Chniba-Boudjada, N.; Ceretti, Monica; Paulus, Werner; Jaouadi, Mouna; Hamzaoui, Ahmed Hichem

doi:10.1016/j.jssc.2016.05.017

Cited by 9 publications

(4 citation statements)

References 31 publications

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“…These two peaks, ascribed by many researchers, highlight the formation of reduced Ce 3+ ions conjugated with compensating population of intrinsic oxygen lacunae after calcium and lanthanum integration into the ceria skeleton [24,25] . The mechanism in the form of oxygen vacancies can be predicted by the following defect equation [26]

true La_{2} normalO_{3} + CaO 2 {normalL normala}_{normalC normale}^{'} + {C a}_{C e}^{^{'}^{'}} + 2 V_{O}^{• •} + 4 O_{O}^{normalX}

…”

Section: Resultsmentioning

confidence: 95%

New Approach to Improve Ionic Conductivity at Low Temperature by the Decomposition of KHCO₃ in the Nanocomposite Electrolyte @

et al. 2020

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The current work principally treats the significant aspects of solid electrolytes based on cerium oxide in the absence and presence of potassium bicarbonate. The classic oxide electrolyteCe0.7La0.15Ca0.15normalO2-δ (LCDC) and the bicarbonate nanocomposite electrolyteCe0.7La0.15Ca0.15normalO2-δ @KHCO3 (LCDC@KHC) are synthesized separately via self‐combustion and co‐precipitation techniques. Structural, thermal, electro‐morphological and electrochemical properties of pure LCDC and nanocomposite material LCDC@KHC are carefully examined. In particular, the influence of the heavily coupling amongst LCDC oxide and KHCO3 bicarbonate on the microstructures and ionic conductivities of KHCO3‐coated nanocrystalline LCDC is studied by TG/DTA, Raman, FEGSEM and AC impedance spectroscopy. Thermal analyses show that the LCDC@KHC nacomposite is stable at a temperature below 122 °C. Beyond this temperature, the LCDC@KHCO3 nanocomposite is transformed into a LCDC@normalKnormalHnormalCnormalO3/normalK2normalCnormalO3 nanocomposite. XRD data confirms that the LCDC phase and the various nanocomposite materials LCDC@KHC, sintering at different temperatures, adopt the fluorite structure. Lattice parameters and bond lengths are determined by Rietveld refinement. The ionic conductivity of bicarbonate nanocomposite electrolyte LCDC@KHC is 100 to 1000 times higher than that of the novel classic electrolyte LCDC. The remarkable enhancement of conductivity as a function of temperature rise is correlated to the presence of potassium in two forms: bicarbonate and carbonate in the LCDC@normalKnormalHnormalCnormalO3/normalK2normalCnormalO3 nanocomposite electrolyte.

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true La_{2} normalO_{3} + CaO 2 {normalL normala}_{normalC normale}^{'} + {C a}_{C e}^{^{'}^{'}} + 2 V_{O}^{• •} + 4 O_{O}^{normalX}

…”

Section: Resultsmentioning

confidence: 95%

New Approach to Improve Ionic Conductivity at Low Temperature by the Decomposition of KHCO₃ in the Nanocomposite Electrolyte @

et al. 2020

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“…Some of them are oxygen stoichiometry, temperature, oxygen partial pressure, mobility, etc. The dependence of oxide ion conductivity ( ) on temperature is represented by the Arrhenius relationship, given as follows [87]:…”

Section: Similar To Nd Sr Niomentioning

confidence: 99%

Ruddlesden-Popper phase A2BO4 oxides: Recent studies on structure, electrical, dielectric, and optical properties

2020

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In the last two decades, structure and properties of Ruddlesden-Popper phase (RP) A 2 BO 4 oxides with K 2 NiF 4 structure, have been widely investigated. But to the best of our knowledge, no review article is available in the literature on recent studies on these oxides. Therefore, in this article, recent studies on structure, electrical, dielectric, and optical properties of these oxides have been reviewed. Special attention is put on to highlight the effect of doping and oxygen stoichiometry on the structure and properties of these oxides. Further, important applications of these oxides have also been mentioned in this article.

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“…Actually, the monitoring of the conductivity behavior of the T-phase was carried out in our previous work 28 . The study reveals that the parent phase present an activation energy of 0.3748 eV.…”

Section: Electrical Propertiesmentioning

confidence: 99%

Topochemical reduction of the oxygen-deficient Ruddlesden−Popper phase (n= 1) La1.85Ca0.15CuO4− and electrical properties of the La1.85Ca0.15CuO3.5

Midouni

Houchati

Othmen

et al. 2019

Arabian Journal of Chemistry

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Influence of nickel doping on oxygen-ionic conductivity of the n = 1 Ruddlesden-Popper Phases La1.85Ca0.15(Cu1−xNix)O4−δ (δ = 0.0905)

Cited by 9 publications

References 31 publications

New Approach to Improve Ionic Conductivity at Low Temperature by the Decomposition of KHCO₃ in the Nanocomposite Electrolyte @

New Approach to Improve Ionic Conductivity at Low Temperature by the Decomposition of KHCO₃ in the Nanocomposite Electrolyte @

Ruddlesden-Popper phase A2BO4 oxides: Recent studies on structure, electrical, dielectric, and optical properties

Topochemical reduction of the oxygen-deficient Ruddlesden−Popper phase (n= 1) La1.85Ca0.15CuO4− and electrical properties of the La1.85Ca0.15CuO3.5

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Influence of nickel doping on oxygen-ionic conductivity of the n = 1 Ruddlesden-Popper Phases La1.85Ca0.15(Cu1−xNix)O4−δ (δ = 0.0905)

Cited by 9 publications

References 31 publications

New Approach to Improve Ionic Conductivity at Low Temperature by the Decomposition of KHCO3 in the Nanocomposite Electrolyte @

New Approach to Improve Ionic Conductivity at Low Temperature by the Decomposition of KHCO3 in the Nanocomposite Electrolyte @

Ruddlesden-Popper phase A2BO4 oxides: Recent studies on structure, electrical, dielectric, and optical properties

Topochemical reduction of the oxygen-deficient Ruddlesden−Popper phase (n= 1) La1.85Ca0.15CuO4− and electrical properties of the La1.85Ca0.15CuO3.5

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New Approach to Improve Ionic Conductivity at Low Temperature by the Decomposition of KHCO₃ in the Nanocomposite Electrolyte @

New Approach to Improve Ionic Conductivity at Low Temperature by the Decomposition of KHCO₃ in the Nanocomposite Electrolyte @