Disclosed are a nickel/nickel hydroxide electrode catalyst, a preparation method thereof and an application thereof, the catalyst includes a porous matrix structure and a nanosheet, where the nanosheet is doped in the porous matrix structure, a mass percentage of the porous matrix structure is 95%-99%, a mass percentage of the nanosheet is 1%-5%, and a mass density of the nanosheet is 12-15 mg/cm.sup.2; and the porous matrix structure is nickel, and the nanosheet is nickel hydroxide in configuration. The present disclosure develops an electrode catalyst with higher catalytic efficiency and a simpler preparation method based on the Ni-based catalysts to achieve efficient application of hydrogen energy.

Disclosed is an anode for a molten carbonate fuel cell (MCFC) having improved creep property by adding an additive for imparting creep resistance to nickel-aluminum alloy and nickel as materials for an anode. Improved sintering property, creep property and increased mechanical strength of a molten carbonate fuel cell may be obtained accordingly.

The invention provides a permeable metal substrate and its manufacturing method. The permeable metal substrate includes a substrate body and a permeable powder layer. The permeable powder layer is located on the top of the substrate body. The substrate body can be a thick substrate or formed of a thick substrate and a thin substrate that are welded together. Both the thick and thin substrates have a plurality of permeable straight gas channels. In addition, a metal-supported solid oxide fuel cell and its manufacturing method are also provided.

A transparent microbial energy device includes a first transparent electrode, a first hydrogel layer disposed on the first transparent electrode, an ion conductive polymer electrolyte membrane disposed on the first hydrogel layer, a second hydrogel layer disclosed on the ion conductive polymer electrolyte membrane, and a second transparent electrode disposed on the second hydrogel layer. The first hydrogel layer includes algal cells, and the second hydrogel layer includes potassium ferricyanide.

A solid oxide cell includes a solid oxide electrolyte, and a fuel electrode disposed on one side of the solid oxide electrolyte and an air electrode disposed on the other side thereof. The fuel electrode includes alloy oxide particles of nickel (Ni) and a heterogeneous metal alloyable therewith and a solid oxide electrolyte material, and when an atomic percentage (at %) of the heterogeneous metal to all atoms in a center region of the alloy oxide particle is M.sub.core and an atomic percentage (at %) of the heterogeneous metal to all atoms in a surface region of the alloy particle is M.sub.surface 10M.sub.core<M.sub.surface.

The present disclosure provides a method for synthesizing pentlandite-type bimetallic (Fe.Math.Co)9S8 compounds. The method includes grinding and mixing sulfur powder with metal salts of Fe and Co to form a homogeneous mixture, and conducting solid-state pyrolysis of the mixture at a temperature of 900 C. in an Argon atmosphere. The synthesized (Fe.Math.Co).sub.9S.sub.8 compound can be used as electrode material in electrochemical processes. In some embodiments, the method further includes dispersing the synthesized (Fe.Math.Co).sub.9S.sub.8 in a Nafion and isopropanol mixture to form a suspension, and coating the suspension on a glassy carbon electrode to form an electrode comprising (Fe.Math.Co).sub.9S.sub.8 pentlandite. The method provides a streamlined approach to synthesizing (Fe.Math.Co).sub.9S.sub.8 pentlandite, a material with potential applications in renewable energy technologies including electrocatalyst for OER in water splitting for hydrogen production.

An electrode for a fuel cell system is provided. The electrode includes a carbon support. The carbon support includes carbon particles each functionalized with one or more sulfur and oxygen-containing moieties. Platinum-based catalyst particles are disposed on the carbon support. Ionomer is disposed on the carbon support. A weight ratio of the ionomer to the carbon support is about 0.4 or less.