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

Midouni, Adnene; Houchati, Mohamed Ikbal; Othmen, Walid Ben Haj; Chniba-Boudjada, N.; Hamzaoui, Ahmed Hichem

doi:10.1016/j.arabjc.2016.06.006

Cited by 6 publications

(1 citation statement)

References 48 publications

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“…Basically, the mentioned semi‐arcs and the slanting line are correlated to the electrode process, interfacial phases and non‐interfacial phases which have been broadly dealt with in the literature [38,39] . The temperature dependence of ionic conductivities for pure LCDC and LCDC@KHC nanocomposite is expressed by the Arrhenius's relation: [40,41]

true σ (T) = \frac{A}{T} \exp (\frac{- E_{a}}{k_{normalB} T})

…”

Section: Resultsmentioning

confidence: 99%

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 σ (T) = \frac{A}{T} \exp (\frac{- E_{a}}{k_{normalB} T})

…”

Section: Resultsmentioning

confidence: 99%

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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Topotactic transformation of (T-T’) La1.8Nd0.2CuO4: Synthesis, structure, electrical properties and oxygen diffusion pathways simulation

Marzougui

Houchati

Smida

et al. 2021

International Journal of Hydrogen Energy

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Phase diagram and transition temperatures in the system (T-T’) La2-xNdxCuO4 (x ≤ 0.5)

Houchati

Midouni²,

Yahya³

et al. 2021

Inorganic Chemistry Communications

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

Cited by 6 publications

References 48 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 @

Topotactic transformation of (T-T’) La1.8Nd0.2CuO4: Synthesis, structure, electrical properties and oxygen diffusion pathways simulation

Phase diagram and transition temperatures in the system (T-T’) La2-xNdxCuO4 (x ≤ 0.5)

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

Cited by 6 publications

References 48 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 @

Topotactic transformation of (T-T’) La1.8Nd0.2CuO4: Synthesis, structure, electrical properties and oxygen diffusion pathways simulation

Phase diagram and transition temperatures in the system (T-T’) La2-xNdxCuO4 (x ≤ 0.5)

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Product

Resources

About

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 @