There is disclosed a gradient structure material comprising a substrate 1 and a functional material 2 formed on the substrate. The gradient structure material is thermally treated while a desired gradient temperature is applied to a specific direction and ...

A method for producing a cathode material for a secondary battery, characterized in that it comprises admixing a compound liberating a phosphate ion in a solution (phosphoric acid H3PO4, phosphorus pentoxide PO5, ammonium dihydrogenphosphate NH4H2PO4 and t...

A method for producing a cathode material for a lithium battery, characterized in that it comprises admixing a compound liberating a phosphate ion in a solution and metallic iron, and dissolving the metallic iron, followed by firing , thereby synthesizing ...

A micro integrated cardiac pacemaker includes a control unit for outputting a control signal according to cardiograph information, heart stimulating means for stimulating heart tissue in response to the control signal, cardiograph information extracting me...