Toyama University in Japan has recently developed a hydrogen-sensitive palladium-cobalt alloy switching device technology that can detect low concentrations of hydrogen leakage and open the switch circuit alarm. This technology is expected to create good commercial value in the popularization of fuel cells (including fuel cell vehicles).
The palladium-cobalt alloy hydrogen-sensitive switching device developed and produced by the University of Toyama was produced by utilizing the normal magnetic properties of palladium-cobalt alloys and the magnetic properties of hydrogen after hydrogen absorption. In the normal state where there is no hydrogen leakage, the copper plate carrying the palladium-cobalt alloy is bent by the attraction of the permanent magnet to turn on the test circuit; when hydrogen leaks, the magnetic properties of the palladium-cobalt alloy on the curved copper plate are reduced, and the copper plate exhibition is reduced. Ping the test circuit and send an alarm signal. Different from the previous practice of reacting hydrogen through a catalyst and transferring heat to a semiconductor sensor, the palladium-cobalt alloy hydrogen-sensing switch device transmits the detection signal more directly and at a lower cost.
Next, the university will work with related companies to solve technical problems such as “reducing the reaction time of palladium and cobalt alloys with hydrogen†and “reducing the sensitivity of (devices) to other gases such as methane†and further promote the practical application of the technology. (According to Yu Jianjian, Science and Technology Department, Embassy of Japan)
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