Structure, Oxygen Mobility, and Electrochemical Characteristics of La1.7Ca0.3Ni1 ‒ xCuxO4 + δ Materials

Садыков, В. А.; Sadovskaya, E. M.; Eremeev, Nikita; Maksimchuk, T.Yu.; Пикалов, С. М.; Филонова, Е. А.; Pikalova, Nadezhda; Gilev, A.R.; Pikalova, E. Yu.

doi:10.1134/s1023193523010068

Cited by 2 publications

(2 citation statements)

References 34 publications

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“…nickelates in the B-site with such cations as Cu on the oxygen transport properties is still lacking and controversial. The oxygen diffusivity can increase while doping with Cu due to the elongation of Ni/Cu-O bonds [305,306] and anomalous grain growth can occur due to Cu-rich liquid phase presence during sintering [307]; it can decrease due to decreasing the oxygen content [308,309], and a non-monotonous dependence can be observed as well [310]. [300], 6-Nd1.7Ca0.3NiO4+δ [300], 7-La2Ni0.5Cu0.5O4+δ [286], 8-La2CuO4+δ Pr1.75Sr0.25Ni0.75Co0.25O4+δ [287].…”

Section: Ruddlesden-popper Phasesmentioning

confidence: 99%

Design of Mixed Ionic-Electronic Materials for Permselective Membranes and Solid Oxide Fuel Cells Based on Their Oxygen and Hydrogen Mobility

et al. 2023

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Oxygen and hydrogen mobility are among the important characteristics for the operation of solid oxide fuel cells, permselective membranes and many other electrochemical devices. This, along with other characteristics, enables a high-power density in solid oxide fuel cells due to reducing the electrolyte resistance and enabling the electrode processes to not be limited by the electrode-electrolyte-gas phase triple-phase boundary, as well as providing high oxygen or hydrogen permeation fluxes for membranes due to a high ambipolar conductivity. This work focuses on the oxygen and hydrogen diffusion of mixed ionic (oxide ionic or/and protonic)–electronic conducting materials for these devices, and its role in their performance. The main laws of bulk diffusion and surface exchange are highlighted. Isotope exchange techniques allow us to study these processes in detail. Ionic transport properties of conventional and state-of-the-art materials including perovskites, Ruddlesden–Popper phases, fluorites, pyrochlores, composites, etc., are reviewed.

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Section: Ruddlesden-popper Phasesmentioning

confidence: 99%

Design of Mixed Ionic-Electronic Materials for Permselective Membranes and Solid Oxide Fuel Cells Based on Their Oxygen and Hydrogen Mobility

et al. 2023

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“…The information on the effect of doping RP nickelates in B-site with such cations as Cu on the oxygen transport properties is still lacking and controversial. The oxygen diffusivity can increase while doping with Cu due to elongation of Ni/Cu-O bonds [223,224] and anomalous grain growth due to Cu-rich liquid phase presence during sintering [225]; it can decrease due to decreasing the oxygen content [226,227]; a non-monotonous dependence can be observed as well [228]. The RP phases of higher orders, different from the first-order ones being overstoichometric and accumulating large amount of highly-mobile interstitial oxygen, tend to be hypostoichiometric.…”

Section: Ruddlesden -Popper Phasesmentioning

confidence: 99%

Design of Mixed Ionic-Electronic Materials for Permselective Membranes and Solid Oxide Fuel Cells Based on Their Oxygen and Hydrogen Mobility

Sadykov¹,

Pikalova²,

Sadovskaya³

et al. 2023

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Oxygen and hydrogen mobility are among the important characteristics for operation of solid oxide fuel cells, permselective membranes and many other electrochemical devices. This, along with other characteristics, enables reaching a high power density of solid oxide fuel cells and a high oxygen or hydrogen permeation fluxes for membranes. This work focuses on oxygen and hydrogen diffusion of mixed ionic (oxide ionic or/and protonic) – electronic conducting materials for these devices and its role in the performance. Ionic transport properties of conventional and state-of-the-art materials are reviewed.

show abstract

Structure, Oxygen Mobility, and Electrochemical Characteristics of La1.7Ca0.3Ni1 ‒ xCuxO4 + δ Materials

Cited by 2 publications

References 34 publications

Design of Mixed Ionic-Electronic Materials for Permselective Membranes and Solid Oxide Fuel Cells Based on Their Oxygen and Hydrogen Mobility

Design of Mixed Ionic-Electronic Materials for Permselective Membranes and Solid Oxide Fuel Cells Based on Their Oxygen and Hydrogen Mobility

Design of Mixed Ionic-Electronic Materials for Permselective Membranes and Solid Oxide Fuel Cells Based on Their Oxygen and Hydrogen Mobility

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