Leland Stanford Junior University

Honda Motor Co., Ltd.

Honda Giken Kogyo Kabushiki Kaisha

Trustees of the Colorado School of Mines

Other

Coorstek, Inc.

Starfire Energy

Ryan Patrick O'Hayre

Friedrich B Prinz

Yuji Saito

Nariaki Kuriyama

Jun Sasahara

Tadahiro Kubota

Sang-Joon John Lee

Toshifumi Suzuki

Tibor Fabian

Daniel Braithwaite

Suk-Won Cha

Yaocheng Liu

Suk Won Cha

Jianhua Tong

Meng Shang

Yuji Isogai

Amy Chang-Chien

Chuancheng Duan

W Grover Coors

Adam W Welch

Joseph D Beach

Tim S Olson

C Deane Little

Joseph Victor Kosmoski

Yong-Il Park

Yongan Yang

Sophie Menzer

Jason Ganley

Jon Kintner

The present invention is directed to a method and system for enhancing the production of ammonia from gaseous hydrogen and nitrogen. Advantageously, the method and system does not emit carbon gases during production. The method and system enhances the production of ammonia compared to traditional Haber-Bosch reactions.

Electrically enhanced Haber-Bosch (EEHB) anhydrous ammonia synthesis

The present invention relates to a protonic ceramic fuel cell and a method of making the same. More specifically, the method relates to a cost-effective route which utilizes a single moderate-temperature (less than or equal to about 1400&#xb0; C.) sintering step to achieve the sandwich structure of a PCFC single cell (dense electrolyte, porous anode, and porous cathode bone). The PCFC layers are stably connected together by the intergrowth of proton conducting ceramic phases. The resulted PCFC single cell exhibits excellent performance (about 450 mW/cmat about 500&#xb0; C.) and stability (greater than about 50 days) at intermediate temperatures (less than or equal to about 600&#xb0; C.). The present invention also relates to a two step method for forming a PCFC, and the resulting PCFC.

Cost-effective solid state reactive sintering method for protonic ceramic fuel cells

The present invention relates to a solid oxide (or protonic ceramic) fuel cell, a cathode for a solid oxide (or protonic ceramic) fuel cell, and a method of making the same. More specifically, the cathode for a solid oxide (or protonic ceramic) fuel cell utilizes a phase-pure perovskite structure of the compound BaCoFeZrYO, where x is between about 0 and about 0.2. The cathode material may then be utilized in a SOFT or a PCFC as either a thin film porous cathode or as nanoparticles infiltrated into a cathode bone having a different structure.

Cathode material for low temperature solid oxide fuel cells

The present invention relates to a protonic ceramic fuel cell, a cathode for a protonic ceramic fuel cell, and a method of making the same. More specifically, the cathode for a protonic ceramic fuel cell utilizes a phase-pure perovskite structure of the compound BaCoFeZrYO, where x is between about 0 and about 0.2. The cathode material may then be utilized in a PCFC as either a thin film porous cathode or as nanoparticles infiltrated into a cathode bone having a different structure.

Triple conducting cathode material for intermediate temperature protonic ceramic electrochemical devices

A chemical process captures and convert hydrogen sulfide (HS) gas into elemental sulfur, polysulfide, sulfur dioxide and/or sulfuric acid while regenerating sodium hydroxide capture agent for further use in an initial HS capture step. Processing may include initial sodium hydroxide scrubbing of gas streams containing HS, electrochemical regeneration of the sodium hydroxide from sodium hydrosulfide or sodium sulfide, recovery of sulfur and/or sulfur dioxide from the electrochemical processing, and production of sulfuric acid from such sulfur and/or sulfur dioxide.

Treatment of hydrogen sulfide

A simple, inexpensive and highly efficient fuel cell has boundary structures made of a photo-sensitive material in combination with selective patterning. Printed circuit board (PCB) fabrication techniques combine boundary structures with two and three dimensional electrical flow path. Photo-sensitive material and PCB fabrication techniques are alternately or combined utilized for making micro-channel structures or micro stitch structures for substantially reducing dead zones of the diffusion layer while keeping fluid flow resistance to a minimum. The fuel cell assembly is free of mechanical clamping elements. Adhesives that may be conductively contaminated and/or fiber-reinforced provide mechanical and eventual electrical connections, and sealing within the assembly. Mechanically supporting backing layers are pre-fabricated with a natural bend defined in combination with the backing layers' elasticity to eliminate massive support plates and assist the adhesive bonding. Proton insulation between adjacent and electrically linked in-plane cell elements is provided by structural insulation within the central membrane.

Fuel cell

In a fuel cell comprising a tubular casing, an electrolyte layer received in the tubular casing, and a pair of gas diffusion electrodes interposing the electrolyte layer and defining a fuel gas passage and an oxidizing gas passage, respectively, each gas diffusion electrode is formed by stacking a plurality of layers of material therefor, for instance in the axial direction of the casing. Because the gas diffusion layers are formed layer by layer, components can be formed in highly fine patterns so that a highly compact tubular fuel cell can be achieved. Similarly, the dimensions of the various elements of the fuel cell can be controlled in a highly accurate manner. Also, the geometric arrangement can be changed at will in intermediate parts of each gas passage.

Fuel cell and method for making the same

Dislocations are fabricated into electrolyte membrane films to increase ion conductivity. Ion and/or electron irradiation causes the growth of vacancy clusters within the thin film and collapsing into Frank dislocation loops that exhibit high ion conductivity. Maximum ion conductivity is accomplished by spatially reorienting the Frank dislocation loops during a following heat-treatment of the membrane. Thereby the dislocation loops form surface-to-surface continuous dislocations along which ions may propagate between membrane surfaces with minimal activation energies. Dislocation densities in the range of 10&#x2dc;10cm/cmmay be fabricated with conventional irradiation techniques into ceramics such as, for example yttria stabilized zirconia and doped ceria.

Solid oxide electrolyte with ion conductivity enhancement by dislocation

In a fuel cell assembly comprising a plurality of cell each including an electrolyte layer (), a pair of diffusion electrode layers () interposing the electrolyte layer between them, and a pair of flow distribution plates () for defining passages () for fuel and oxidant fluids that contact the diffusion electrode layers, the fuel cells are arranged on a common plane. Therefore, the vertical dimension of the fuel cell assembly can be minimized, and a fuel cell assembly of favorable electric properties can be achieved. Each flow distribution plate is typically formed with communication passages for communicating fluid passages defined on each side of the electrolyte layer at a prescribed pattern. The communication passages and through holes communicate the fluid passages in such a manner that adjacent fuels cells have opposite polarities.

Fuel cell assembly

A fuel cell contains an electrolyte sheet sandwiched between two electrodes. One or both electrode/electrolyte interfaces includes mesoscopic three-dimensional features in a prescribed pattern. The features increase the surface area-to-volume ratio of the device and can be used as integral channels for directing the flow of reactant gases to the reaction surface area, eliminating the need for channels in sealing plates surrounding the electrodes. The electrolyte can be made by micromachining techniques that allow very precise feature definition. Both selective removal and mold-filling techniques can be used. The fuel cell provides significantly enhanced volumetric power density when compared with conventional fuel cells.

Fuel cell with patterned electrolyte/electrode interface

Growing community of inventors

Golden, CO, United States of America

Ryan Patrick O'Hayre