JP2011226948A - Heat generation method and regeneration method for heavy hydrogen storage metal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To achieve an increase in storage amount of heavy hydrogen in heavy hydrogen storage metal while facilitating the movement of stored heavy hydrogen in a heat generation method through electrolysis of heavy water, a so-called room-temperature nuclear fusion reaction.SOLUTION: A heat generation method successively performs a step for storing heavy hydrogen in a heavy hydrogen storage metal by using the heavy hydrogen storage metal as an anode so that heavy water is subject to electrolysis; a step for forming a barrier layer composed of metal which has a low permeability of heavy hydrogen and with which the anode elution can be performed at the surface of the heavy hydrogen storage metal in which heavy hydrogen is stored in a state in which the electrification continues; and a step for performing electrification of heavy water by increasing the temperature of heavy water and using the heavy hydrogen storage metal as a cathode.

Description

  The present invention relates to an exothermic method by electrolysis of deuterium water, so-called cold fusion reaction, and more specifically, occlusion of a large amount of deuterium in a deuterium occlusion metal, and promotion of movement of the occluded deuterium. The present invention relates to a heat generation method that achieves both.

  The present invention also relates to a method for regenerating deuterium storage metal used in the heat generation method.

  In the exothermic method of electrolysis of heavy water, so-called cold fusion reaction, in order to make the reaction easy to occur, an electrode made of a deuterium occlusion metal such as Pd is made to occlude as much deuterium as possible and It is known that it is important to promote the movement of hydrogen.

  However, the amount of occluded deuterium in Pd increases at lower temperatures, but the effect of promoting the movement of occluded deuterium is small at low temperatures. In conventional experiments, electrolysis was often performed at about 80 ° C., which is disadvantageous to deuterium storage. That is, in order to generate excess heat, high D / Pd (ratio of stored deuterium to Pd) and deuterium motion (diffusion) are indispensable, but it is difficult to achieve both.

  Approaches for solving this problem are disclosed in Patent Document 1 (Japanese Patent Laid-Open No. 6-293985) and Patent Document 2 (Japanese Patent Laid-Open No. 6-148366), respectively.

  First, Patent Document 1 discloses a method in which a large amount of deuterium is occluded into Pd by electrolysis at a low temperature, and then the temperature of heavy water is rapidly increased to promote the movement of deuterium to promote the nuclear reaction. It is disclosed.

  On the other hand, in Patent Document 2, after deuterium is occluded in Pd by electrolysis of heavy water, a barrier layer is formed on the surface of Pd by electrolytic plating, and after deuterium is confined, Pd is removed from the electrolytic cell. A method of increasing the deuterium concentration locally in Pd and promoting the nuclear reaction by taking out and giving a local temperature difference is disclosed.

JP-A-6-293985 JP-A-6-148366

  However, in the method disclosed in Patent Document 1 described above, the deuterium solubility in Pd decreases as the deuterium water temperature rises, so deuterium gas is rapidly released from the surface of Pd as the temperature rises. There was a problem that D / Pd could not be maintained.

  On the other hand, the method disclosed in Patent Document 2 described above is intended to generate a high D / Pd region on the low temperature side by locally creating a temperature difference in Pd, but Pd generates heat. Thus, there is a problem that the temperature of the cooling medium rises and it is difficult to maintain the temperature difference.

  That is, in both methods of Patent Documents 1 and 2, it has been difficult to achieve both the occlusion of a large amount of deuterium in Pd and the promotion of deuterium movement.

  The present invention has been made to solve the above-described problems of the conventional heat generation method. As a means for this, the heat generation method of the present invention includes a step of electrolyzing heavy water using a deuterium storage metal (such as Pd) as a negative electrode, and storing the deuterium storage metal in the negative electrode. Forming a barrier layer made of a metal having a low deuterium permeability and capable of anodic elution on the surface of the deuterium occlusion metal that occludes deuterium in a state in which energization of the deuterium used in the above is continued; In addition to increasing the temperature of heavy water, a step of energizing heavy water using a deuterium storage metal as a positive electrode was sequentially provided.

  According to the heat generation method of the present invention, heavy water can be electrolyzed at a low temperature, so that a sufficient amount of deuterium can be stored in the deuterium storage metal.

  In the heat generation method of the present invention, since deuterium storage metal is used as a positive electrode and electricity is supplied to heavy water in the heat generation promotion stage, the movement (diffusion) of deuterium inside the deuterium storage metal is promoted. That is, deuterium occlusion metal tends to escape from the inside of the deuterium occlusion metal by energizing using the deuterium occlusion metal as the positive electrode, but the barrier layer compared to the deuterium occlusion metal. Is difficult to permeate deuterium, so that a high concentration of deuterium accumulates in the deuterium storage metal region near the interface with the barrier layer. Since the deuterium occluded in the deuterium occlusion metal by electrolysis is retained in the deuterium occlusion metal by electrical action, some deuterium is quickly deuterated by stopping energization. Although it has been confirmed in the conventional method that it is released as deuterium gas outside the hydrogen storage metal, in the present invention, by energizing with the polarity reversed, compared with the case of stopping energization, The effect of promptly releasing a large amount of deuterium works, and the movement (diffusion) of deuterium can be promoted inside the deuterium storage metal.

  That is, according to the heat generation method of the present invention, both the high D / Pd of the deuterium storage metal and the promotion of deuterium motion can be achieved, and heat can be reliably generated.

In the heat generating method concerning the Example of this invention, it is sectional drawing which shows the step which electrolyzes heavy water and makes deuterium occlusion metal occlude deuterium. FIG. 5 is a cross-sectional view showing a step of forming a barrier layer made of a metal having low deuterium permeability and capable of anode elution on the surface of the deuterium storage metal in the heat generation method according to the example of the present invention. In the heat generating method concerning the Example of this invention, while raising the temperature of heavy water, it is sectional drawing which shows the step which energizes heavy water using a deuterium storage metal for a positive electrode.

  Hereinafter, modes for carrying out the present invention will be described.

  In the present embodiment, a large amount of deuterium is occluded in the deuterium storage metal such as Pd as the negative electrode by electrolyzing heavy water at a low temperature. The deuterium storage metal is not limited to Pd, but may be other types such as Pd alloy, Ti, Ti alloy.

  Next, a thick barrier layer is formed by electrolytic plating on the surface of Pd (an example of a deuterium storage metal) that has stored deuterium. For the barrier layer, a component such as Cu or Ni, which has a lower hydrogen permeability than Pd and is capable of anodic dissolution, is used.

  After the barrier layer is formed on the surface of Pd, the temperature of heavy water is raised, and the polarity of the power source is reversed, and electricity is supplied to heavy water using Pd as the positive electrode. As a result, the force for releasing deuterium from the Pd increases, and a small amount of deuterium can pass through the barrier layer by thinning the barrier layer by elution of the anode. Since the vicinity of the interface between the Pd layer and the barrier layer has a high D / Pd and the movement of deuterium is promoted, the nuclear reaction can be generated with good reproducibility.

  The Pd that has been reacted can be reused by restarting the anodic dissolution and dissolving the entire barrier layer.

(Example)
Examples of the present invention will be described below.

  First, as shown in FIG. 1, heavy water is put into a glass container 1 installed in a thermostatic bath (not shown), and then Li is added while stirring heavy water. Was obtained as an electrolyte.

  Next, the Pd plate 3 and the mesh-like Pt 4 were immersed in the heavy water 2. The Pd plate 3 was installed so that the whole was immersed in the heavy water 2, and Pt 4 was installed so as to surround the Pd plate 3.

  Next, the Pd plate 3 was used as a negative electrode, Pt4 was used as a positive electrode, and current was applied at a current density of 100 mA to electrolyze the heavy water 2 and to store the deuterium in the Pd plate 3. The temperature of heavy water 2 during electrolysis was kept at 20 ° C.

Next, as shown in FIG. 2, after confirming that the D / Pd value of the Pd plate 3 is saturated, the Ni plating solution containing H ₂ SO ₄ is added to the heavy water for pH adjustment in a state where energization is continued. 2 and continued energization to form a barrier layer 4 made of a Ni film on the surface of the Pd plate 3.

  Next, in a state where energization was continued, the temperature of the thermostatic bath was raised, and the temperature of the heavy water 2 was raised. And when the temperature of the heavy water 2 reached 90 degreeC, while stopping electricity supply, the temperature of the heavy water 2 was maintained at 90 degreeC.

  Next, as shown in FIG. 3, the polarity of the power source was reversed, and energization was started with the Pd plate 3 as the positive electrode and Pt4 as the negative electrode. And when the temperature of the heavy water 2 exceeded 90 degreeC and started the raise, electricity supply and the heating by a thermostat were stopped.

  The energization is performed with the polarity of the power source reversed, and when the deuterium gas starts to be generated from the Pd plate 3 whose surface is covered with the barrier layer of the Ni film, the temperature of the heavy water 2 rises and the heating by the thermostatic bath is performed. After stopping, it was confirmed that heavy water 2 continued to boil.

  Next, after completion of heat generation, the Ni film forming the barrier layer 4 formed on the surface of the Pd plate 3 was removed by the following method. That is, after confirming the end of heat generation, the energization was resumed, and the Ni film constituting the barrier layer 4 on the surface of the Pd plate 3 was removed by anode elution.

  Using the Pd plate 3 regenerated by this method, the above-described heat generation operation of the heavy water 2 was performed again. Similar to the case of using a new Pd plate 3, the heavy water 2 could be boiled.

1: Glass container 2: Heavy water 3: Pd plate 4: Pt (mesh)
5: Barrier layer

Claims (4)

Using the deuterium storage metal for the negative electrode, electrolyzing heavy water, and storing the deuterium in the deuterium storage metal;
A metal having a low deuterium permeability and capable of anodic elution on the surface of the deuterium occlusion metal that occludes the deuterium in a state where the deuterium occlusion metal is used as a negative electrode and the energization to the deuterium is continued. Forming a barrier layer comprising:
And a step of energizing the heavy water in order by increasing the temperature of the heavy water and using the deuterium storage metal as a positive electrode.   The heat generation method according to claim 1, wherein the barrier layer is formed on the surface of the deuterium storage metal by an electrolytic plating method.   The heat generation method according to claim 1 or 2, wherein the deuterium storage metal is any one of Pd, Pd alloy, Ti, and Ti alloy. After the heat generation method according to any one of claims 1 to 3,
A method for regenerating a deuterium storage metal, wherein the barrier layer is removed from the surface of the deuterium storage metal by performing anode elution.