Richard H Arons

US Patent:

44041543, Sep 13, 1983

Filed:

Nov 30, 1981

Appl. No.:

6/326088

Inventors:

Richard M. Arons - Wheaton IL
Joseph T. Dusek - Downers Grove IL

International Classification:

C04B 3324

US Classification:

264 62

Abstract:

Ceramic shapes having impermeable tungsten coatings can be used for containing highly corrosive molten alloys and salts. The shapes are prepared by coating damp green ceramic shapes containing a small amount of yttria with a tungsten coating slip which has been adjusted to match the shrinkage rate of the green ceramic and which will fire to a theoretical density of at least 80% to provide a impermeable coating.

US Patent:

44106076, Oct 18, 1983

Filed:

Sep 17, 1981

Appl. No.:

6/303325

Inventors:

Richard M. Arons - Wheaton IL
Joseph T. Dusek - Downers Grove IL

International Classification:

H01M 486

US Classification:

429 40

Abstract:

A porous sintered plaque is provided with a bimodal porosity that is especially well suited for use as an electrode within a molten carbonate fuel cell. The coarse porosity is sufficient for admitting gases into contact with the reaction surfaces while the fine porosity is wetted with and retains molten electrolyte on the reaction sites. The electrode structure is prepared by providing a very fine powder of such as nickel oxide and blending the powder with a suitable decomposable binder to form a solid mass. The mass is comminuted into agglomerate size particles substantially larger than the fine oxide particles and formed into a cohesive compact for subsequent sintering. Sintering is carried out at sufficient conditions to bind the agglomerates together into a porous structure having both coarse and fine porosity. Where lithiated nickel oxide cathodes are prepared, the sintering conditions can be moderate enough to retain substantial quantities of lithium within the electrode for adequate conductivity.