Abstract: An interconnect for a fuel cell stack includes a first set of gas flow channels in a first portion of the interconnect, and a second set of gas flow channels in second portion of the interconnect.

Abstract: A solid oxide fuel cell (SOFC) includes a cathode electrode, a solid oxide electrolyte, and an anode electrode having a first portion and a second portion, such that the first portion is located between the electrolyte and the second portion. The anode electrode comprises a cermet comprising a nickel containing phase and a ceramic phase. The first portion of the anode electrode contains a lower porosity and a lower ratio of the nickel containing phase to the ceramic phase than the second portion of the anode electrode.

Abstract: A vibration damper for a racquet sport includes a score tallying device for keeping the score of t racquet sport such as tennis. The current score is maintained by an electronic circuit and displayed on an electronic display within the vibration damper. The vibration damper is configured to be attached to the racquet strings. The vibration damper and score keeper is preferably configured so that it displays only legitimate scores of the type of racquet sport for which it is intended.

Abstract: A vibration damper for a racquet sport includes a score tallying device for keeping the score of t racquet sport such as tennis. A rotating score indicator is provided with allowed score values for indicating the current score by rotation of the indicator by a user. Alternatively, the current score is maintained by an electronic circuit and displayed on an electronic display within the vibration damper. The vibration damper is configured to be attached to the racquet strings. The vibration damper and score keeper is preferably marked so that it displays only legitimate scores of the type of racquet sport for which it is intended.

Abstract: A solid oxide regenerative fuel cell includes a ceramic electrolyte, a first electrode which is adapted to be positively biased when the fuel cell operates in a fuel cell mode and in an electrolysis mode, and a second electrode which is adapted to be negatively biased when the fuel cell operates in the fuel cell mode and in the electrolysis mode. The second electrode comprises less than 1 mg/cm2 of noble metal.

Abstract: A solid oxide regenerative fuel cell includes a ceramic electrolyte, a first electrode which is adapted to be positively biased when the fuel cell operates in a fuel cell mode and in an electrolysis mode, and a second electrode which is adapted to be negatively biased when the fuel cell operates in the fuel cell mode and in the electrolysis mode. The second electrode comprises less than 1 mg/cm2 of noble metal. By maintaining a reducing atmosphere on the second electrode at all times noble metals can be eliminated from the electrode composition which substantially reduces the cost of the fuel cell.

Abstract: One embodiment of the invention provides a method of operating a solid oxide fuel cell, including providing a solid oxide fuel cell comprising an anode electrode containing nickel, and electrochemically reducing an anode side of the fuel cell. Another embodiment of the invention provides a method of operating a solid oxide fuel cell, including providing a solid oxide fuel cell comprising an anode electrode containing nickel, periodically operating the fuel cell to generate electricity, and reducing an anode side of the fuel cell between electricity generation operation periods of the fuel cell.

Abstract: A fuel cell stack includes a plurality of fuel cells, and a plurality of fuel delivery ports. Each of the plurality of fuel delivery ports is positioned on or in the fuel cell stack to provide fuel to a portion of the plurality fuel cells in each stack.

Abstract: A solid oxide electrolyzer cell or a solid oxide reversible fuel cell includes a solid oxide electrolyte. It may also include at least one of a first gadolinia doped ceria interfacial layer in contact with a first side of the electrolyte and a second gadolinia doped ceria interfacial layer in contact with a second side of the electrolyte. It may also include a fuel electrode including a cermet containing nickel and one or both of a doped zirconia and gadolinia doped ceria. It may also include an oxidant electrode including an LSM and one or both of a doped zirconia and gadolinia doped ceria.

Abstract: A solid oxide regenerative fuel cell includes a ceramic electrolyte, a first electrode which is adapted to be positively biased when the fuel cell operates in a fuel cell mode and in an electrolysis mode, and a second electrode which is adapted to be negatively biased when the fuel cell operates in the fuel cell mode and in the electrolysis mode. The second electrode comprises less than 1 mg/cm2 of noble metal.

Abstract: A bandsaw blade is manufactured from a blank having a plurality of teeth, at least some of which are to be set. Those set teeth are ground, prior to setting, such that at least an upper portion of the front rake face thereof forms an acute angle with a line extending perpendicular to a center line of the blank. Thereafter, those ground teeth are set to respective side of the blank, whereby a lateral rake angle of each set tooth is smaller than a side relief angle thereof. Preferably, the side relief angle is at least 5 degrees larger than the lateral rake angle.