WO1998019351A3 - Nanostructured ion conducting solid electrolytes - Google Patents

Nanostructured ion conducting solid electrolytes Download PDF

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Publication number
WO1998019351A3
WO1998019351A3 PCT/US1997/019742 US9719742W WO9819351A3 WO 1998019351 A3 WO1998019351 A3 WO 1998019351A3 US 9719742 W US9719742 W US 9719742W WO 9819351 A3 WO9819351 A3 WO 9819351A3
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WIPO (PCT)
Prior art keywords
ysz
solid electrolytes
oxygen
conducting solid
ion conducting
Prior art date
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PCT/US1997/019742
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French (fr)
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WO1998019351A2 (en
Inventor
Tapesh Yadav
Hongxing Hu
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Nanomaterials Research Corp
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Application filed by Nanomaterials Research Corp filed Critical Nanomaterials Research Corp
Publication of WO1998019351A2 publication Critical patent/WO1998019351A2/en
Publication of WO1998019351A3 publication Critical patent/WO1998019351A3/en

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Abstract

Ion conducting solid electrolytes are constructed from nanoscale precursor material. Nanocrystalline powders are pressed into disc structures and sintered to the appropriate degree of densification. Metallic material is mixed with 0 to 65 vol % nanostructured electrolyte powders to form a cermet mix and then coated on each side of the disc and fitted with electrical leads. The electrical conductivity of a Ag/YSZ/Ag cell so assembled exhibited about an order of magnitude enhancement in oxygen ion conductivity. As an oxygen-sensing element in a standard O2/Ag/YSZ/Ag/N2 set up, the nanocrystalline YSZ element exhibited commercially significant oxygen ion conductivity at low temperatures. The invention can be utilized to prepare nanostructured ion conducting solid electrolytes for a wide range of applications, including sensors, oxygen pumps, fuel cells, batteries, electrosynthesis reactors and catalytic membranes.
PCT/US1997/019742 1996-10-30 1997-10-30 Nanostructured ion conducting solid electrolytes WO1998019351A2 (en)

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US08/739,257 US5905000A (en) 1996-09-03 1996-10-30 Nanostructured ion conducting solid electrolytes

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