Institute of Nuclear Energy Research, Atomic Energy Council, Executive Yuan

Institute of Nuclear Energy Research, Atomic Energy Council, Executive Yuan, R.o.c

Jen-Feng Yu

Chang-Sing Hwang

Chun-Huang Tsai

Shih-Wei Cheng

Chun-Liang Chang

Jun-Meng Lin

Nian-Tzu Suen

The disclosure provides a porous metal substrate structure with high gas permeability and redox stability for a SOFC and the fabrication process thereof, the porous metal substrate structure comprising: a porous metal plate composed of first metal particles; and a porous metal film composed of second metal particles and formed on the porous metal plate; wherein the porous metal plate has a thickness more than the porous metal film, and the first metal particle has a size more than the second metal particle. Further, a porous shell containing Fe is formed on the surface of each metal particle by impregnating a solution containing Fe in a high temperature sintering process of reducing or vacuum atmosphere, and the oxidation and reduction processes. The substrate uses the porous shells containing Fe particles to absorb the leakage oxygen.

Method of fabricating a porous metal substrate structure for a solid oxide fuel cell

A double-layer anode structure on a pretreated porous metal substrate and a method for fabricating the same, for improving the redox stability and decreasing the anode polarization resistance of a SOFC. The anode structure includes: a porous metal substrate of high gas permeability; a first porous anode functional layer, formed on the porous metal substrate by a high-voltage high-enthalpy Ar&#x2014;He&#x2014;H&#x2014;Natmospheric-pressure plasma spraying process; and a second porous anode functional layer, formed on the first porous anode functional layer by a high-voltage high-enthalpy Ar&#x2014;He&#x2014;H&#x2014;Natmospheric-pressure plasma spraying and hydrogen reduction. The first porous anode functional layer is composed a redox stable perovskite, the second porous anode functional layer is composed of a nanostructured cermet. The first porous anode functional layer is also used to prevent the second porous anode functional layer from being diffused by the composition elements of the porous metal substrate.

Anode on a pretreated substrate for improving redox-stability of solid oxide fuel cell and the fabrication method thereof

The disclosure provides a double-layer anode structure on a pretreated porous metal substrate and a method for fabricating the same, for improving the redox stability and decreasing the anode polarization resistance of a SOFC. The anode structure comprises: a porous metal substrate of high gas permeability; a first porous anode functional layer, formed on the porous metal substrate by a high-voltage high-enthalpy Ar&#x2014;He&#x2014;H&#x2014;Natmospheric-pressure plasma spraying process; and a second porous anode functional layer, formed on the first porous anode functional layer by a high-voltage high-enthalpy Ar&#x2014;He&#x2014;H&#x2014;Natmospheric-pressure plasma spraying and hydrogen reduction. The first porous anode functional layer is composed a redox stable perovskite, the second porous anode functional layer is composed of a nanostructured cermet. The first porous anode functional layer is also used to prevent the second porous anode functional layer from being diffused by the composition elements of the porous metal substrate.

Anode on a pretreated substrate for improving redox-stability of solid oxide fuel cell and the fabrication method therof

Porous metal substrate structure for a solid oxide fuel cell

A multi-gas mixer for supplying a gas mixture that can uniformly mix a plurality of gases according to the proportional percentages determined by the mass flow rate of each gas is disclosed. The multi-gas mixer comprises a mixer chamber, a plurality of gas inlets, a gas mixture outlet, and at least one gas rotating and mixing unit. The present invention also provides a method for controlling the percentage of each gas to be mixed by use of a plurality of mass flow rate controllers to control the gas flow to produce a gas mixture according to a predetermined proportionality. When the multi-gas mixer delivers a gas mixture to a high-speed plasma torch, the torch can be stably operated under a high voltage (&#x3e;85V) and a medium current (&#x3c;650 A) so that a long-arc, high-temperature and high-speed plasma flame can be generated.

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Taichung, Taiwan

Jen-Feng Yu