Increase in thermal stability of MgO, CaO added NH4NbWO6 solid electrolyte

Ogura, Hiroyuki; Ito, Yasoshi; Kurajo, Takenori; Tanaka, Yuji; Shirogami, Tamotsu

doi:10.1016/0167-2738(95)00060-j

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Proton Conductors1

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2009

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“…Using a similar approach, the effect of MgO and CaO addition to NH,NbWO,, which shows proton conduction at moderate temperatures (z30OoC), has been examined by Ogura et a/. 131 The oxide addition resulted in a reduction in the thermal decomposition of NH: and so increased the stability of the proton conductivity of the electrolyte.…”

Section: Proton Conductorsmentioning

confidence: 99%

Chapter 24. Conducting solids, covering ionic and electronic conductors

Slater¹,

Francesconi²

1995

Annu. Rep. Prog. Chem., Sect. A

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Section: Proton Conductorsmentioning

confidence: 99%

Chapter 24. Conducting solids, covering ionic and electronic conductors

Slater¹,

Francesconi²

1995

Annu. Rep. Prog. Chem., Sect. A

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Hydrogen sensor based on a new type of proton conductive ceramic

Zhuiykov¹

1996

International Journal of Hydrogen Energy

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Ball milling-induced pyrochlore-to-tungsten bronze phase transition in RbNbWO₆

et al. 2009

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A set of Bragg peaks consistent with a hexagonal Bravais lattice was observed in the x-ray powder diffraction pattern of cubic pyrochlore rubidium tungstoniobate (RbNbWO6) subjected to high-energy ball milling. The calculated lattice parameters for this hexagonal phase are similar to those of compounds with tungsten bronze structure. In fact, the powder pattern of the hexagonal phase could be refined with a structural model based on the tungsten bronze structure. The hexagonal phase produced by high-energy ball milling of RbNbWO6 transforms back to the pyrochlore structure upon heating to 773 K in air. A similar phase was obtained by ball milling the mixture RbNbWO6 + WO3, but, in this case, the stoichiometric hexagonal tungsten bronze compound thus obtained remained stable up to 1273 K.

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Increase in thermal stability of MgO, CaO added NH4NbWO6 solid electrolyte

Cited by 3 publications

References 1 publication

Chapter 24. Conducting solids, covering ionic and electronic conductors

Chapter 24. Conducting solids, covering ionic and electronic conductors

Hydrogen sensor based on a new type of proton conductive ceramic

Ball milling-induced pyrochlore-to-tungsten bronze phase transition in RbNbWO₆

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Increase in thermal stability of MgO, CaO added NH4NbWO6 solid electrolyte

Cited by 3 publications

References 1 publication

Chapter 24. Conducting solids, covering ionic and electronic conductors

Chapter 24. Conducting solids, covering ionic and electronic conductors

Hydrogen sensor based on a new type of proton conductive ceramic

Ball milling-induced pyrochlore-to-tungsten bronze phase transition in RbNbWO6

Contact Info

Product

Resources

About

Ball milling-induced pyrochlore-to-tungsten bronze phase transition in RbNbWO₆