PROBLEM TO BE SOLVED: To decompose water efficiently by using rays. SOLUTION: A water decomposing cell 1 is equipped with three sets of basic units placed along the propagating direction of rats. Each of the basic units is equipped with a cathode 20, an anode a 30, separator 40, an oxygen recovery component 50 and a hydrogen recovery component 60 which are laid out while being soaked in the water 10. The cathode 20 is constituted of substrates 21, 22 and 23 which carry layers 25 made of particulate TiO2 or SiC of N or P types. The anode 30, a metal electrode made of Pt, is placed in the position facing the cathode 20 across the separator 40. Both electrodes 20 and 30 are electrically connected by an outside circuit including a monitoring ammeter 70. When the decomposition cell 1 is irradiated with rays from a decommissioned reactor and other, oxygen gas and hydrogen gas, which evolve in the cathode 20 and the anode 30 respectively, are recovered in the oxygen gas recover component 50 and the hydrogen gas recovery component 60. If a B alloy, a Co alloy and a W alloy are used for the substrates 21, 22 and 23 in the order from the side where the rays are incident, the regulation of energy and the expansion of the propagating route are carried out step by step along the route of the rats to utilize it fully.
展开▼
