Electrochemical Investigation of Oxygen Intercalation into La2CuO4+δPhases

Study of Copper Ferrite as a Novel Photocathode for Water Reduction: Improving Its Photoactivity by Electrochemical Pretreatment

“…Chemically, this charge accumulation should correspond to an oxidation process. Considering that the existence of Cu III has been widely described, [46,55,56] we can tentatively assumet hat CuFe 2 O 4 may sustain the transfer of an electron from the oxygen to the metal cation, which leads to [Eq. (1) which leads to an et mass loss (an increase in the resonant frequency) of one proton per accumulated hole.…”

“…(1) which leads to an et mass loss (an increase in the resonant frequency) of one proton per accumulated hole. Considering that the existence of Cu III has been widely described, [46,55,56] we can tentatively assumet hat CuFe 2 O 4 may sustain the transfer of an electron from the oxygen to the metal cation, which leads to [Eq.…”

“…This process has been studied for the superconductor La 2 CuO 4 + d . [55,56] Al imited amount of O À temporarily bound to the oxide surface can diffuse into the oxide network, and it can react by receiving an electron from the metal cation.I nf act, this procedure (electrochemical oxygen intercalation) is applied to prepares uperconducting materials. For instance, the superconductor La 2 CuO 4 + d has been prepared by this technique.…”

Electrochemically Induced Phase Changes in La2CuO4 During Cathodic Electrocatalysis

“…The ability to accommodate both types of defect within the material has significant implications for electrocatalysis as it provides a synthetic avenue to tune the electronic properties of materials by tailoring oxygen non‐stoichiometry . For example, oxygen vacancies have been shown to directly affect kinetics of both OER and ORR in these materials, and oxygen hyperstoichiometry influences catalytic activity by providing access to high valent oxidation states of transition metals within the lattice . The high ionic conductivity with respect to O 2− anions has also made RPOs a central focus in solid oxide fuel cells, resulting in the synthesis and structural characterization of a large selection of ternary and quaternary compositions .…”

Effect of Co doping on oxygen permeation in Sr3Ti2O7 with Ruddlesden-Popper structure

“…Recently, we studied the oxygen permeating property of the layered perovskite oxide of Pr 2 NiO 4 , which shows high oxygen permeation from air to He [5]. Oxygen tracer diffusivity and also the surface activity for oxygen on La 2-x Sr x CuO 4-δ was investigated by several groups [6][7][8]. On the other hand, Kilner et al studied the oxygen tracer diffusion in La 2 NiO 4 based oxide and reported that the fast oxygen diffusivity is confirmed along a rock salt block [9,10].…”