Abstract: A fuel cell/battery uses amine-based liquid complexes as a direct oxidation fuel in an alkaline fuel cell/battery. Oxidant solutions are used on the cathode side to improve power density.

Abstract: A fuel cell/battery uses amine-based liquid complexes as a direct oxidation fuel in an alkaline fuel cell/battery. Oxidant solutions are used on the cathode side to improve power density.

Abstract: A method of generating electricity from a fuel cell comprises the steps of (i) providing a fuel, such as molecular hydrogen, to an anode electrocatalyst, (ii) providing an oxygen-containing liquid to a cathode electrocatalyst, (iii) converting the fuel to positive ions via the anode electrocatalyst and the anode, while simultaneously converting the oxygen-containing liquid to yield hydroxyl or oxygen ions via the cathode electrocatalyst and the cathode, and (iv) continuously or periodically reoxidizing the oxygen-containing liquid by contacting the oxygen-containing liquid with molecular oxygen. In the method, at least about 90% of the oxygen provided to the cathode is provided by the oxygen-containing liquid.

Abstract: A method of generating electricity from a fuel cell comprises the steps of (i) providing a fuel, such as molecular hydrogen, to an anode electrocatalyst, (ii) providing an oxygen-containing liquid to a cathode electrocatalyst, (iii) converting the fuel to positive ions via the anode electrocatalyst and the anode, while simultaneously converting the oxygen-containing liquid to yield hydroxyl or oxygen ions via the cathode electrocatalyst and the cathode, and (iv) continuously or periodically reoxidizing the oxygen-containing liquid by contacting the oxygen-containing liquid with molecular oxygen. In the method, at least about 90% of the oxygen provided to the cathode is provided by the oxygen-containing liquid.

Abstract: A method is provided for testing prestressed concrete pipe. In the method, elastic waves are serially induced at at least three different inducing locations along the surface of the conduit. The shear wave component of each induced elastic wave is detected by at least one, and preferably two, acoustic sensors disposed at fixed sensing sites along the conduit. The relationship between at least one parameter of each induced shear wave and the distance between each inducing location and the acoustic sensor(s), are correlated and compared with standard correlations to identify structural discontinuities in the conduit. In a typical example of the method, elastic waves are induced using a mechanical hammer at multiple inducing sites around a multiplicity of annuli along the length of the conduit. Each annulus is separated from adjoining annuli by 2-4 feet.