Mixed ionic conductors

Details Mixed ionic conductors Mixed ionic conductors

1992-07-17

1995-02-07

Tung, T.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204424, 429 33, 429193, G01N 27406, G01N 27407

Patent

active

053873300

ABSTRACT:
The present invention relates to a mixing ion conductive material for use in an electrochemical device such as a fuel cell or a sensor and more particularly to the super ion conductive material based on protons or oxide cations and also to a synthesizing method of the mixing ion conductive material.
A mixing ion conductive oxide which has a proton conductivity and/or oxide cation conductivity and has a composition comprising 1 mol of barium oxide, 1-x mol of cerium oxide and x mol of gadolinium oxide; wherein 1>x>0.1. When x=0.2, the mixing ion conductive material shows a conductivity shown in FIG. 2. The oxide sintered body mentioned above has a density higher than 96.5% of the theoretical density and a grain size of 0.1 to 10 micron. The synthesizing method of the oxide sintered body is characterized by that the powders for use in the final heat treatment is crushed into a particle size less than 3 micron and is subjected to a vacuum drying process. Further, the sintering temperature is specified to a temperature between 1635.degree. C. and 1665.degree. C.

REFERENCES:
patent: 4851303 (1989-07-01), Madou et al.
Solid State Ionics vol. 35, 1989, (month unavailable) Ansterdam NL, pp. 179-188, 0XP000132464 N. Bonanos et al., "Ionic Conductivity of Gadolinium-Doped Barium Cerate Perovskite" *p. 179, left column, line 1, p. 181, left column, line 20* *the whole document*.
Solid State Ionics vol. 45, 1991(month unavailable), Amsterdam NL, pp. 111-115, 0XP000243501 R. C. T. Slade et al. "Systematic Examination of Hydrogen Ion Conduction in Rare-Earth Doped Barium Cerate Ceramics" *the whole document*.
Journal of the American Ceramic Society, vol. 64, No. 8, Aug. 1981, Columbus US, pp. 479-485, I. Riess et al. "Density and Ionic Conductivity of Sintered (CE02) 0.82(Gd01.5)0.18" *p. 480, left column, line 3-p. 482, right column, line 25; figure 2*.
"Proton Conduction in Sintered Oxides" in Solid States Science and Technology written by H. Iwahara et al. in J. Electrochem. S,135 (1988)(month unavailable) 529.

Affiliated with

Also associated with

Rating

Mixed ionic conductors does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Mixed ionic conductors, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Mixed ionic conductors will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1108470