Highly Oxygen-Permeable NiV2O6–25 wt % V2O5 Molten-Oxide Membrane Material

Oxide Ion-Conducting Materials Containing Tetrahedral Moieties: Structures and Conduction Mechanisms

“…These give the molten oxide ion conductors significant potential applications and future prospects in direct carbon fuel cells and hybrid molten carbonate/SOFCs, as well as in molten oxide fuel cells (MOFCs) and oxygen membranes. 262−264 A series of molten oxide ion conductors have been reported, such as molten Bi 2 O 3 -based, V 2 O 5 -based, as well as Na 2 W 2 O 7based 65 272 for which the liquid phases displayed mixed oxide ion and electronic conduction, making them suitable for oxygen separation.…”

“…In molten Bi 2 O 3 -based samples, e.g., Bi 2 CuO 4 - x Bi 2 O 3 , ZnO/NiO- x Bi 2 O 3 and In 2 O 3 - x Bi 2 O 3 , Co 3 O 4 - x Bi 2 O 3 , and TeO 2 - x (Bi 2 O 3 +2TeO 2 ), as well as Bi 2 O 3 -0.2 wt% B 2 O 3 , , the LGBSs display excellent oxygen ion conductivities (1.95 S·cm –1 at 750 °C on Bi 2 O 3 -0.2 wt% B 2 O 3 composition) . There also exist several electrolytes based on molten V 2 O 5 -based LGBS materials, e.g., BiVO 4 - x V 2 O 5 , , ZrV 2 O 7 - x V 2 O 5 , , and NiV 2 O 6 - x V 2 O 5 , for which the liquid phases displayed mixed oxide ion and electronic conduction, making them suitable for oxygen separation.…”

Features of Oxygen Transfer in Cu2V2O7 – 20 wt% CuV2O6 Molten Oxide Membrane

“…Recently, the ZrV 2 O 7 -20 wt% V 2 O 5 , BiVO 4 -12 wt% V 2 O 5 and NiV 2 O 6 -20 wt% V 2 O 5 MOM materials with high oxygen selectivity have been developed. [11][12][13][14] However, their oxygen permeability is by an order of magnitude inferior to the cermet [15][16][17] and some ceramic membranes. [18][19] This is due to insufficient ambipolar conductivity of the MOM materials and in particular to their low electron conductivity.…”